Mercurial > public > mercurial-scm > hg

annotate contrib/python-zstandard/tests/test_compressor.py @ 39878:3e896b51aa5d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
storageutil: move metadata parsing and packing from revlog (API) Parsing and writing of revision text metadata is likely identical across storage backends. Let's move the code out of revlog so we don't need to import the revlog module in order to use it. Differential Revision: https://phab.mercurial-scm.org/D4754
author Gregory Szorc <gregory.szorc@gmail.com>
date Mon, 24 Sep 2018 14:31:31 -0700
parents b1fb341d8a61
children 73fef626dae3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1 import hashlib
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
2 import io
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
3 import struct
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
4 import sys
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
5 import tarfile
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
6 import unittest
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
7
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
8 import zstandard as zstd
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
9
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
10 from .common import (
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
11 make_cffi,
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
12 OpCountingBytesIO,
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
13 )
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
14
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
15
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
16 if sys.version_info[0] >= 3:
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
17 next = lambda it: it.__next__()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
18 else:
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
19 next = lambda it: it.next()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
20
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
21
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
22 def multithreaded_chunk_size(level, source_size=0):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
23 params = zstd.ZstdCompressionParameters.from_level(level,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
24 source_size=source_size)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
25
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
26 return 1 << (params.window_log + 2)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
27
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
28
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
29 @make_cffi
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
30 class TestCompressor(unittest.TestCase):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
31 def test_level_bounds(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
32 with self.assertRaises(ValueError):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
33 zstd.ZstdCompressor(level=23)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
34
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
35 def test_memory_size(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
36 cctx = zstd.ZstdCompressor(level=1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
37 self.assertGreater(cctx.memory_size(), 100)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
38
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
39
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
40 @make_cffi
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
41 class TestCompressor_compress(unittest.TestCase):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
42 def test_compress_empty(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
43 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
44 result = cctx.compress(b'')
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
45 self.assertEqual(result, b'\x28\xb5\x2f\xfd\x00\x48\x01\x00\x00')
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
46 params = zstd.get_frame_parameters(result)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
47 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
48 self.assertEqual(params.window_size, 524288)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
49 self.assertEqual(params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
50 self.assertFalse(params.has_checksum, 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
51
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
52 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
53 result = cctx.compress(b'')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
54 self.assertEqual(result, b'\x28\xb5\x2f\xfd\x20\x00\x01\x00\x00')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
55 params = zstd.get_frame_parameters(result)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
56 self.assertEqual(params.content_size, 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
57
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
58 def test_input_types(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
59 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
60 expected = b'\x28\xb5\x2f\xfd\x00\x00\x19\x00\x00\x66\x6f\x6f'
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
61
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
62 mutable_array = bytearray(3)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
63 mutable_array[:] = b'foo'
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
64
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
65 sources = [
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
66 memoryview(b'foo'),
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
67 bytearray(b'foo'),
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
68 mutable_array,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
69 ]
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
70
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
71 for source in sources:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
72 self.assertEqual(cctx.compress(source), expected)
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
73
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
74 def test_compress_large(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
75 chunks = []
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
76 for i in range(255):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
77 chunks.append(struct.Struct('>B').pack(i) * 16384)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
78
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
79 cctx = zstd.ZstdCompressor(level=3, write_content_size=False)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
80 result = cctx.compress(b''.join(chunks))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
81 self.assertEqual(len(result), 999)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
82 self.assertEqual(result[0:4], b'\x28\xb5\x2f\xfd')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
83
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
84 # This matches the test for read_to_iter() below.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
85 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
86 result = cctx.compress(b'f' * zstd.COMPRESSION_RECOMMENDED_INPUT_SIZE + b'o')
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
87 self.assertEqual(result, b'\x28\xb5\x2f\xfd\x00\x40\x54\x00\x00'
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
88 b'\x10\x66\x66\x01\x00\xfb\xff\x39\xc0'
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
89 b'\x02\x09\x00\x00\x6f')
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
90
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
91 def test_negative_level(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
92 cctx = zstd.ZstdCompressor(level=-4)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
93 result = cctx.compress(b'foo' * 256)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
94
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
95 def test_no_magic(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
96 params = zstd.ZstdCompressionParameters.from_level(
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
97 1, format=zstd.FORMAT_ZSTD1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
98 cctx = zstd.ZstdCompressor(compression_params=params)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
99 magic = cctx.compress(b'foobar')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
100
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
101 params = zstd.ZstdCompressionParameters.from_level(
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
102 1, format=zstd.FORMAT_ZSTD1_MAGICLESS)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
103 cctx = zstd.ZstdCompressor(compression_params=params)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
104 no_magic = cctx.compress(b'foobar')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
105
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
106 self.assertEqual(magic[0:4], b'\x28\xb5\x2f\xfd')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
107 self.assertEqual(magic[4:], no_magic)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
108
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
109 def test_write_checksum(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
110 cctx = zstd.ZstdCompressor(level=1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
111 no_checksum = cctx.compress(b'foobar')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
112 cctx = zstd.ZstdCompressor(level=1, write_checksum=True)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
113 with_checksum = cctx.compress(b'foobar')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
114
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
115 self.assertEqual(len(with_checksum), len(no_checksum) + 4)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
116
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
117 no_params = zstd.get_frame_parameters(no_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
118 with_params = zstd.get_frame_parameters(with_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
119
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
120 self.assertFalse(no_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
121 self.assertTrue(with_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
122
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
123 def test_write_content_size(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
124 cctx = zstd.ZstdCompressor(level=1)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
125 with_size = cctx.compress(b'foobar' * 256)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
126 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
127 no_size = cctx.compress(b'foobar' * 256)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
128
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
129 self.assertEqual(len(with_size), len(no_size) + 1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
130
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
131 no_params = zstd.get_frame_parameters(no_size)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
132 with_params = zstd.get_frame_parameters(with_size)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
133 self.assertEqual(no_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
134 self.assertEqual(with_params.content_size, 1536)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
135
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
136 def test_no_dict_id(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
137 samples = []
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
138 for i in range(128):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
139 samples.append(b'foo' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
140 samples.append(b'bar' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
141 samples.append(b'foobar' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
142
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
143 d = zstd.train_dictionary(1024, samples)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
144
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
145 cctx = zstd.ZstdCompressor(level=1, dict_data=d)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
146 with_dict_id = cctx.compress(b'foobarfoobar')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
147
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
148 cctx = zstd.ZstdCompressor(level=1, dict_data=d, write_dict_id=False)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
149 no_dict_id = cctx.compress(b'foobarfoobar')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
150
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
151 self.assertEqual(len(with_dict_id), len(no_dict_id) + 4)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
152
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
153 no_params = zstd.get_frame_parameters(no_dict_id)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
154 with_params = zstd.get_frame_parameters(with_dict_id)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
155 self.assertEqual(no_params.dict_id, 0)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
156 self.assertEqual(with_params.dict_id, 1387616518)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
157
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
158 def test_compress_dict_multiple(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
159 samples = []
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
160 for i in range(128):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
161 samples.append(b'foo' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
162 samples.append(b'bar' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
163 samples.append(b'foobar' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
164
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
165 d = zstd.train_dictionary(8192, samples)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
166
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
167 cctx = zstd.ZstdCompressor(level=1, dict_data=d)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
168
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
169 for i in range(32):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
170 cctx.compress(b'foo bar foobar foo bar foobar')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
171
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
172 def test_dict_precompute(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
173 samples = []
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
174 for i in range(128):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
175 samples.append(b'foo' * 64)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
176 samples.append(b'bar' * 64)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
177 samples.append(b'foobar' * 64)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
178
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
179 d = zstd.train_dictionary(8192, samples)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
180 d.precompute_compress(level=1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
181
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
182 cctx = zstd.ZstdCompressor(level=1, dict_data=d)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
183
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
184 for i in range(32):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
185 cctx.compress(b'foo bar foobar foo bar foobar')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
186
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
187 def test_multithreaded(self):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
188 chunk_size = multithreaded_chunk_size(1)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
189 source = b''.join([b'x' * chunk_size, b'y' * chunk_size])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
190
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
191 cctx = zstd.ZstdCompressor(level=1, threads=2)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
192 compressed = cctx.compress(source)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
193
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
194 params = zstd.get_frame_parameters(compressed)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
195 self.assertEqual(params.content_size, chunk_size * 2)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
196 self.assertEqual(params.dict_id, 0)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
197 self.assertFalse(params.has_checksum)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
198
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
199 dctx = zstd.ZstdDecompressor()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
200 self.assertEqual(dctx.decompress(compressed), source)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
201
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
202 def test_multithreaded_dict(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
203 samples = []
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
204 for i in range(128):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
205 samples.append(b'foo' * 64)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
206 samples.append(b'bar' * 64)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
207 samples.append(b'foobar' * 64)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
208
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
209 d = zstd.train_dictionary(1024, samples)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
210
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
211 cctx = zstd.ZstdCompressor(dict_data=d, threads=2)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
212
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
213 result = cctx.compress(b'foo')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
214 params = zstd.get_frame_parameters(result);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
215 self.assertEqual(params.content_size, 3);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
216 self.assertEqual(params.dict_id, d.dict_id())
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
217
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
218 self.assertEqual(result,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
219 b'\x28\xb5\x2f\xfd\x23\x06\x59\xb5\x52\x03\x19\x00\x00'
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
220 b'\x66\x6f\x6f')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
221
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
222 def test_multithreaded_compression_params(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
223 params = zstd.ZstdCompressionParameters.from_level(0, threads=2)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
224 cctx = zstd.ZstdCompressor(compression_params=params)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
225
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
226 result = cctx.compress(b'foo')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
227 params = zstd.get_frame_parameters(result);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
228 self.assertEqual(params.content_size, 3);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
229
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
230 self.assertEqual(result,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
231 b'\x28\xb5\x2f\xfd\x20\x03\x19\x00\x00\x66\x6f\x6f')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
232
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
233
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
234 @make_cffi
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
235 class TestCompressor_compressobj(unittest.TestCase):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
236 def test_compressobj_empty(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
237 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
238 cobj = cctx.compressobj()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
239 self.assertEqual(cobj.compress(b''), b'')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
240 self.assertEqual(cobj.flush(),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
241 b'\x28\xb5\x2f\xfd\x00\x48\x01\x00\x00')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
242
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
243 def test_input_types(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
244 expected = b'\x28\xb5\x2f\xfd\x00\x48\x19\x00\x00\x66\x6f\x6f'
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
245 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
246
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
247 mutable_array = bytearray(3)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
248 mutable_array[:] = b'foo'
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
249
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
250 sources = [
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
251 memoryview(b'foo'),
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
252 bytearray(b'foo'),
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
253 mutable_array,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
254 ]
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
255
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
256 for source in sources:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
257 cobj = cctx.compressobj()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
258 self.assertEqual(cobj.compress(source), b'')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
259 self.assertEqual(cobj.flush(), expected)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
260
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
261 def test_compressobj_large(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
262 chunks = []
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
263 for i in range(255):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
264 chunks.append(struct.Struct('>B').pack(i) * 16384)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
265
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
266 cctx = zstd.ZstdCompressor(level=3)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
267 cobj = cctx.compressobj()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
268
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
269 result = cobj.compress(b''.join(chunks)) + cobj.flush()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
270 self.assertEqual(len(result), 999)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
271 self.assertEqual(result[0:4], b'\x28\xb5\x2f\xfd')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
272
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
273 params = zstd.get_frame_parameters(result)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
274 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
275 self.assertEqual(params.window_size, 1048576)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
276 self.assertEqual(params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
277 self.assertFalse(params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
278
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
279 def test_write_checksum(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
280 cctx = zstd.ZstdCompressor(level=1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
281 cobj = cctx.compressobj()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
282 no_checksum = cobj.compress(b'foobar') + cobj.flush()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
283 cctx = zstd.ZstdCompressor(level=1, write_checksum=True)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
284 cobj = cctx.compressobj()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
285 with_checksum = cobj.compress(b'foobar') + cobj.flush()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
286
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
287 no_params = zstd.get_frame_parameters(no_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
288 with_params = zstd.get_frame_parameters(with_checksum)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
289 self.assertEqual(no_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
290 self.assertEqual(with_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
291 self.assertEqual(no_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
292 self.assertEqual(with_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
293 self.assertFalse(no_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
294 self.assertTrue(with_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
295
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
296 self.assertEqual(len(with_checksum), len(no_checksum) + 4)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
297
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
298 def test_write_content_size(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
299 cctx = zstd.ZstdCompressor(level=1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
300 cobj = cctx.compressobj(size=len(b'foobar' * 256))
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
301 with_size = cobj.compress(b'foobar' * 256) + cobj.flush()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
302 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
303 cobj = cctx.compressobj(size=len(b'foobar' * 256))
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
304 no_size = cobj.compress(b'foobar' * 256) + cobj.flush()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
305
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
306 no_params = zstd.get_frame_parameters(no_size)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
307 with_params = zstd.get_frame_parameters(with_size)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
308 self.assertEqual(no_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
309 self.assertEqual(with_params.content_size, 1536)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
310 self.assertEqual(no_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
311 self.assertEqual(with_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
312 self.assertFalse(no_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
313 self.assertFalse(with_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
314
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
315 self.assertEqual(len(with_size), len(no_size) + 1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
316
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
317 def test_compress_after_finished(self):
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
318 cctx = zstd.ZstdCompressor()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
319 cobj = cctx.compressobj()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
320
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
321 cobj.compress(b'foo')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
322 cobj.flush()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
323
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
324 with self.assertRaisesRegexp(zstd.ZstdError, 'cannot call compress\(\) after compressor'):
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
325 cobj.compress(b'foo')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
326
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
327 with self.assertRaisesRegexp(zstd.ZstdError, 'compressor object already finished'):
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
328 cobj.flush()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
329
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
330 def test_flush_block_repeated(self):
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
331 cctx = zstd.ZstdCompressor(level=1)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
332 cobj = cctx.compressobj()
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
333
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
334 self.assertEqual(cobj.compress(b'foo'), b'')
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
335 self.assertEqual(cobj.flush(zstd.COMPRESSOBJ_FLUSH_BLOCK),
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
336 b'\x28\xb5\x2f\xfd\x00\x48\x18\x00\x00foo')
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
337 self.assertEqual(cobj.compress(b'bar'), b'')
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
338 # 3 byte header plus content.
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
339 self.assertEqual(cobj.flush(), b'\x19\x00\x00bar')
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
340
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
341 def test_flush_empty_block(self):
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
342 cctx = zstd.ZstdCompressor(write_checksum=True)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
343 cobj = cctx.compressobj()
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
344
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
345 cobj.compress(b'foobar')
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
346 cobj.flush(zstd.COMPRESSOBJ_FLUSH_BLOCK)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
347 # No-op if no block is active (this is internal to zstd).
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
348 self.assertEqual(cobj.flush(zstd.COMPRESSOBJ_FLUSH_BLOCK), b'')
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
349
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
350 trailing = cobj.flush()
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
351 # 3 bytes block header + 4 bytes frame checksum
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
352 self.assertEqual(len(trailing), 7)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
353 header = trailing[0:3]
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
354 self.assertEqual(header, b'\x01\x00\x00')
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
355
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
356 def test_multithreaded(self):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
357 source = io.BytesIO()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
358 source.write(b'a' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
359 source.write(b'b' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
360 source.write(b'c' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
361 source.seek(0)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
362
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
363 cctx = zstd.ZstdCompressor(level=1, threads=2)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
364 cobj = cctx.compressobj()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
365
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
366 chunks = []
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
367 while True:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
368 d = source.read(8192)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
369 if not d:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
370 break
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
371
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
372 chunks.append(cobj.compress(d))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
373
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
374 chunks.append(cobj.flush())
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
375
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
376 compressed = b''.join(chunks)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
377
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
378 self.assertEqual(len(compressed), 295)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
379
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
380 def test_frame_progression(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
381 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
382
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
383 self.assertEqual(cctx.frame_progression(), (0, 0, 0))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
384
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
385 cobj = cctx.compressobj()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
386
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
387 cobj.compress(b'foobar')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
388 self.assertEqual(cctx.frame_progression(), (6, 0, 0))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
389
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
390 cobj.flush()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
391 self.assertEqual(cctx.frame_progression(), (6, 6, 15))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
392
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
393 def test_bad_size(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
394 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
395
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
396 cobj = cctx.compressobj(size=2)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
397 with self.assertRaisesRegexp(zstd.ZstdError, 'Src size is incorrect'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
398 cobj.compress(b'foo')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
399
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
400 # Try another operation on this instance.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
401 with self.assertRaisesRegexp(zstd.ZstdError, 'Src size is incorrect'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
402 cobj.compress(b'aa')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
403
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
404 # Try another operation on the compressor.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
405 cctx.compressobj(size=4)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
406 cctx.compress(b'foobar')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
407
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
408
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
409 @make_cffi
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
410 class TestCompressor_copy_stream(unittest.TestCase):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
411 def test_no_read(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
412 source = object()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
413 dest = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
414
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
415 cctx = zstd.ZstdCompressor()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
416 with self.assertRaises(ValueError):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
417 cctx.copy_stream(source, dest)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
418
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
419 def test_no_write(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
420 source = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
421 dest = object()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
422
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
423 cctx = zstd.ZstdCompressor()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
424 with self.assertRaises(ValueError):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
425 cctx.copy_stream(source, dest)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
426
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
427 def test_empty(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
428 source = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
429 dest = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
430
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
431 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
432 r, w = cctx.copy_stream(source, dest)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
433 self.assertEqual(int(r), 0)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
434 self.assertEqual(w, 9)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
436 self.assertEqual(dest.getvalue(),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
437 b'\x28\xb5\x2f\xfd\x00\x48\x01\x00\x00')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
438
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
439 def test_large_data(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
440 source = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
441 for i in range(255):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
442 source.write(struct.Struct('>B').pack(i) * 16384)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
443 source.seek(0)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
444
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
445 dest = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
446 cctx = zstd.ZstdCompressor()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
447 r, w = cctx.copy_stream(source, dest)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
448
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
449 self.assertEqual(r, 255 * 16384)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
450 self.assertEqual(w, 999)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
451
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
452 params = zstd.get_frame_parameters(dest.getvalue())
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
453 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
454 self.assertEqual(params.window_size, 1048576)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
455 self.assertEqual(params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
456 self.assertFalse(params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
457
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
458 def test_write_checksum(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
459 source = io.BytesIO(b'foobar')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
460 no_checksum = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
461
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
462 cctx = zstd.ZstdCompressor(level=1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
463 cctx.copy_stream(source, no_checksum)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
464
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
465 source.seek(0)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
466 with_checksum = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
467 cctx = zstd.ZstdCompressor(level=1, write_checksum=True)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
468 cctx.copy_stream(source, with_checksum)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
469
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
470 self.assertEqual(len(with_checksum.getvalue()),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
471 len(no_checksum.getvalue()) + 4)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
472
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
473 no_params = zstd.get_frame_parameters(no_checksum.getvalue())
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
474 with_params = zstd.get_frame_parameters(with_checksum.getvalue())
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
475 self.assertEqual(no_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
476 self.assertEqual(with_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
477 self.assertEqual(no_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
478 self.assertEqual(with_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
479 self.assertFalse(no_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
480 self.assertTrue(with_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
481
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
482 def test_write_content_size(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
483 source = io.BytesIO(b'foobar' * 256)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
484 no_size = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
485
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
486 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
487 cctx.copy_stream(source, no_size)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
488
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
489 source.seek(0)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
490 with_size = io.BytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
491 cctx = zstd.ZstdCompressor(level=1)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
492 cctx.copy_stream(source, with_size)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
493
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
494 # Source content size is unknown, so no content size written.
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
495 self.assertEqual(len(with_size.getvalue()),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
496 len(no_size.getvalue()))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
497
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
498 source.seek(0)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
499 with_size = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
500 cctx.copy_stream(source, with_size, size=len(source.getvalue()))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
501
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
502 # We specified source size, so content size header is present.
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
503 self.assertEqual(len(with_size.getvalue()),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
504 len(no_size.getvalue()) + 1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
505
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
506 no_params = zstd.get_frame_parameters(no_size.getvalue())
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
507 with_params = zstd.get_frame_parameters(with_size.getvalue())
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
508 self.assertEqual(no_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
509 self.assertEqual(with_params.content_size, 1536)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
510 self.assertEqual(no_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
511 self.assertEqual(with_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
512 self.assertFalse(no_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
513 self.assertFalse(with_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
514
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
515 def test_read_write_size(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
516 source = OpCountingBytesIO(b'foobarfoobar')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
517 dest = OpCountingBytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
518 cctx = zstd.ZstdCompressor()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
519 r, w = cctx.copy_stream(source, dest, read_size=1, write_size=1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
520
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
521 self.assertEqual(r, len(source.getvalue()))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
522 self.assertEqual(w, 21)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
523 self.assertEqual(source._read_count, len(source.getvalue()) + 1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
524 self.assertEqual(dest._write_count, len(dest.getvalue()))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
525
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
526 def test_multithreaded(self):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
527 source = io.BytesIO()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
528 source.write(b'a' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
529 source.write(b'b' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
530 source.write(b'c' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
531 source.seek(0)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
532
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
533 dest = io.BytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
534 cctx = zstd.ZstdCompressor(threads=2, write_content_size=False)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
535 r, w = cctx.copy_stream(source, dest)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
536 self.assertEqual(r, 3145728)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
537 self.assertEqual(w, 295)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
538
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
539 params = zstd.get_frame_parameters(dest.getvalue())
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
540 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
541 self.assertEqual(params.dict_id, 0)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
542 self.assertFalse(params.has_checksum)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
543
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
544 # Writing content size and checksum works.
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
545 cctx = zstd.ZstdCompressor(threads=2, write_checksum=True)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
546 dest = io.BytesIO()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
547 source.seek(0)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
548 cctx.copy_stream(source, dest, size=len(source.getvalue()))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
549
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
550 params = zstd.get_frame_parameters(dest.getvalue())
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
551 self.assertEqual(params.content_size, 3145728)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
552 self.assertEqual(params.dict_id, 0)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
553 self.assertTrue(params.has_checksum)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
554
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
555 def test_bad_size(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
556 source = io.BytesIO()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
557 source.write(b'a' * 32768)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
558 source.write(b'b' * 32768)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
559 source.seek(0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
560
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
561 dest = io.BytesIO()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
562
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
563 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
564
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
565 with self.assertRaisesRegexp(zstd.ZstdError, 'Src size is incorrect'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
566 cctx.copy_stream(source, dest, size=42)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
567
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
568 # Try another operation on this compressor.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
569 source.seek(0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
570 dest = io.BytesIO()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
571 cctx.copy_stream(source, dest)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
572
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
573
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
574 @make_cffi
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
575 class TestCompressor_stream_reader(unittest.TestCase):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
576 def test_context_manager(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
577 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
578
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
579 reader = cctx.stream_reader(b'foo' * 60)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
580 with self.assertRaisesRegexp(zstd.ZstdError, 'read\(\) must be called from an active'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
581 reader.read(10)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
582
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
583 with cctx.stream_reader(b'foo') as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
584 with self.assertRaisesRegexp(ValueError, 'cannot __enter__ multiple times'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
585 with reader as reader2:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
586 pass
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
587
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
588 def test_not_implemented(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
589 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
590
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
591 with cctx.stream_reader(b'foo' * 60) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
592 with self.assertRaises(io.UnsupportedOperation):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
593 reader.readline()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
594
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
595 with self.assertRaises(io.UnsupportedOperation):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
596 reader.readlines()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
597
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
598 # This could probably be implemented someday.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
599 with self.assertRaises(NotImplementedError):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
600 reader.readall()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
601
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
602 with self.assertRaises(io.UnsupportedOperation):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
603 iter(reader)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
604
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
605 with self.assertRaises(io.UnsupportedOperation):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
606 next(reader)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
607
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
608 with self.assertRaises(OSError):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
609 reader.writelines([])
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
610
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
611 with self.assertRaises(OSError):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
612 reader.write(b'foo')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
613
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
614 def test_constant_methods(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
615 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
616
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
617 with cctx.stream_reader(b'boo') as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
618 self.assertTrue(reader.readable())
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
619 self.assertFalse(reader.writable())
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
620 self.assertFalse(reader.seekable())
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
621 self.assertFalse(reader.isatty())
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
622 self.assertIsNone(reader.flush())
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
623
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
624 def test_read_closed(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
625 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
626
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
627 with cctx.stream_reader(b'foo' * 60) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
628 reader.close()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
629 with self.assertRaisesRegexp(ValueError, 'stream is closed'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
630 reader.read(10)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
631
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
632 def test_read_bad_size(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
633 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
634
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
635 with cctx.stream_reader(b'foo') as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
636 with self.assertRaisesRegexp(ValueError, 'cannot read negative or size 0 amounts'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
637 reader.read(-1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
638
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
639 with self.assertRaisesRegexp(ValueError, 'cannot read negative or size 0 amounts'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
640 reader.read(0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
641
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
642 def test_read_buffer(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
643 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
644
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
645 source = b''.join([b'foo' * 60, b'bar' * 60, b'baz' * 60])
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
646 frame = cctx.compress(source)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
647
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
648 with cctx.stream_reader(source) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
649 self.assertEqual(reader.tell(), 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
650
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
651 # We should get entire frame in one read.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
652 result = reader.read(8192)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
653 self.assertEqual(result, frame)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
654 self.assertEqual(reader.tell(), len(result))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
655 self.assertEqual(reader.read(), b'')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
656 self.assertEqual(reader.tell(), len(result))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
657
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
658 def test_read_buffer_small_chunks(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
659 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
660
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
661 source = b'foo' * 60
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
662 chunks = []
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
663
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
664 with cctx.stream_reader(source) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
665 self.assertEqual(reader.tell(), 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
666
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
667 while True:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
668 chunk = reader.read(1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
669 if not chunk:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
670 break
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
671
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
672 chunks.append(chunk)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
673 self.assertEqual(reader.tell(), sum(map(len, chunks)))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
674
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
675 self.assertEqual(b''.join(chunks), cctx.compress(source))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
676
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
677 def test_read_stream(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
678 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
679
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
680 source = b''.join([b'foo' * 60, b'bar' * 60, b'baz' * 60])
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
681 frame = cctx.compress(source)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
682
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
683 with cctx.stream_reader(io.BytesIO(source), size=len(source)) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
684 self.assertEqual(reader.tell(), 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
685
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
686 chunk = reader.read(8192)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
687 self.assertEqual(chunk, frame)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
688 self.assertEqual(reader.tell(), len(chunk))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
689 self.assertEqual(reader.read(), b'')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
690 self.assertEqual(reader.tell(), len(chunk))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
691
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
692 def test_read_stream_small_chunks(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
693 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
694
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
695 source = b'foo' * 60
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
696 chunks = []
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
697
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
698 with cctx.stream_reader(io.BytesIO(source), size=len(source)) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
699 self.assertEqual(reader.tell(), 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
700
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
701 while True:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
702 chunk = reader.read(1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
703 if not chunk:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
704 break
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
705
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
706 chunks.append(chunk)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
707 self.assertEqual(reader.tell(), sum(map(len, chunks)))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
708
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
709 self.assertEqual(b''.join(chunks), cctx.compress(source))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
710
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
711 def test_read_after_exit(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
712 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
713
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
714 with cctx.stream_reader(b'foo' * 60) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
715 while reader.read(8192):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
716 pass
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
717
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
718 with self.assertRaisesRegexp(zstd.ZstdError, 'read\(\) must be called from an active'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
719 reader.read(10)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
720
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
721 def test_bad_size(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
722 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
723
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
724 source = io.BytesIO(b'foobar')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
725
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
726 with cctx.stream_reader(source, size=2) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
727 with self.assertRaisesRegexp(zstd.ZstdError, 'Src size is incorrect'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
728 reader.read(10)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
729
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
730 # Try another compression operation.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
731 with cctx.stream_reader(source, size=42):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
732 pass
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
733
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
734
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
735 @make_cffi
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
736 class TestCompressor_stream_writer(unittest.TestCase):
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
737 def test_empty(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
738 buffer = io.BytesIO()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
739 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
740 with cctx.stream_writer(buffer) as compressor:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
741 compressor.write(b'')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
742
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
743 result = buffer.getvalue()
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
744 self.assertEqual(result, b'\x28\xb5\x2f\xfd\x00\x48\x01\x00\x00')
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
745
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
746 params = zstd.get_frame_parameters(result)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
747 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
748 self.assertEqual(params.window_size, 524288)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
749 self.assertEqual(params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
750 self.assertFalse(params.has_checksum)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
751
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
752 def test_input_types(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
753 expected = b'\x28\xb5\x2f\xfd\x00\x48\x19\x00\x00\x66\x6f\x6f'
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
754 cctx = zstd.ZstdCompressor(level=1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
755
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
756 mutable_array = bytearray(3)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
757 mutable_array[:] = b'foo'
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
758
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
759 sources = [
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
760 memoryview(b'foo'),
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
761 bytearray(b'foo'),
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
762 mutable_array,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
763 ]
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
764
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
765 for source in sources:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
766 buffer = io.BytesIO()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
767 with cctx.stream_writer(buffer) as compressor:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
768 compressor.write(source)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
769
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
770 self.assertEqual(buffer.getvalue(), expected)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
771
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
772 def test_multiple_compress(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
773 buffer = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
774 cctx = zstd.ZstdCompressor(level=5)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
775 with cctx.stream_writer(buffer) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
776 self.assertEqual(compressor.write(b'foo'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
777 self.assertEqual(compressor.write(b'bar'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
778 self.assertEqual(compressor.write(b'x' * 8192), 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
779
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
780 result = buffer.getvalue()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
781 self.assertEqual(result,
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
782 b'\x28\xb5\x2f\xfd\x00\x50\x75\x00\x00\x38\x66\x6f'
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
783 b'\x6f\x62\x61\x72\x78\x01\x00\xfc\xdf\x03\x23')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
784
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
785 def test_dictionary(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
786 samples = []
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
787 for i in range(128):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
788 samples.append(b'foo' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
789 samples.append(b'bar' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
790 samples.append(b'foobar' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
791
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
792 d = zstd.train_dictionary(8192, samples)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
793
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
794 h = hashlib.sha1(d.as_bytes()).hexdigest()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
795 self.assertEqual(h, '3040faa0ddc37d50e71a4dd28052cb8db5d9d027')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
796
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
797 buffer = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
798 cctx = zstd.ZstdCompressor(level=9, dict_data=d)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
799 with cctx.stream_writer(buffer) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
800 self.assertEqual(compressor.write(b'foo'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
801 self.assertEqual(compressor.write(b'bar'), 0)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
802 self.assertEqual(compressor.write(b'foo' * 16384), 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
803
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
804 compressed = buffer.getvalue()
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
805
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
806 params = zstd.get_frame_parameters(compressed)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
807 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
808 self.assertEqual(params.window_size, 2097152)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
809 self.assertEqual(params.dict_id, d.dict_id())
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
810 self.assertFalse(params.has_checksum)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
811 self.assertEqual(compressed,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
812 b'\x28\xb5\x2f\xfd\x03\x58\x06\x59\xb5\x52\x5d\x00'
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
813 b'\x00\x00\x02\xfc\x3d\x3f\xd9\xb0\x51\x03\x45\x89')
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
814
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
815 def test_compression_params(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
816 params = zstd.ZstdCompressionParameters(
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
817 window_log=20,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
818 chain_log=6,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
819 hash_log=12,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
820 min_match=5,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
821 search_log=4,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
822 target_length=10,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
823 compression_strategy=zstd.STRATEGY_FAST)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
824
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
825 buffer = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
826 cctx = zstd.ZstdCompressor(compression_params=params)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
827 with cctx.stream_writer(buffer) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
828 self.assertEqual(compressor.write(b'foo'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
829 self.assertEqual(compressor.write(b'bar'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
830 self.assertEqual(compressor.write(b'foobar' * 16384), 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
831
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
832 compressed = buffer.getvalue()
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
833
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
834 params = zstd.get_frame_parameters(compressed)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
835 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
836 self.assertEqual(params.window_size, 1048576)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
837 self.assertEqual(params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
838 self.assertFalse(params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
839
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
840 h = hashlib.sha1(compressed).hexdigest()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
841 self.assertEqual(h, '2a8111d72eb5004cdcecbdac37da9f26720d30ef')
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
842
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
843 def test_write_checksum(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
844 no_checksum = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
845 cctx = zstd.ZstdCompressor(level=1)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
846 with cctx.stream_writer(no_checksum) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
847 self.assertEqual(compressor.write(b'foobar'), 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
848
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
849 with_checksum = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
850 cctx = zstd.ZstdCompressor(level=1, write_checksum=True)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
851 with cctx.stream_writer(with_checksum) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
852 self.assertEqual(compressor.write(b'foobar'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
853
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
854 no_params = zstd.get_frame_parameters(no_checksum.getvalue())
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
855 with_params = zstd.get_frame_parameters(with_checksum.getvalue())
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
856 self.assertEqual(no_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
857 self.assertEqual(with_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
858 self.assertEqual(no_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
859 self.assertEqual(with_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
860 self.assertFalse(no_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
861 self.assertTrue(with_params.has_checksum)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
862
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
863 self.assertEqual(len(with_checksum.getvalue()),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
864 len(no_checksum.getvalue()) + 4)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
865
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
866 def test_write_content_size(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
867 no_size = io.BytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
868 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
869 with cctx.stream_writer(no_size) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
870 self.assertEqual(compressor.write(b'foobar' * 256), 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
871
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
872 with_size = io.BytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
873 cctx = zstd.ZstdCompressor(level=1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
874 with cctx.stream_writer(with_size) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
875 self.assertEqual(compressor.write(b'foobar' * 256), 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
876
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
877 # Source size is not known in streaming mode, so header not
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
878 # written.
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
879 self.assertEqual(len(with_size.getvalue()),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
880 len(no_size.getvalue()))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
881
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
882 # Declaring size will write the header.
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
883 with_size = io.BytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
884 with cctx.stream_writer(with_size, size=len(b'foobar' * 256)) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
885 self.assertEqual(compressor.write(b'foobar' * 256), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
886
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
887 no_params = zstd.get_frame_parameters(no_size.getvalue())
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
888 with_params = zstd.get_frame_parameters(with_size.getvalue())
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
889 self.assertEqual(no_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
890 self.assertEqual(with_params.content_size, 1536)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
891 self.assertEqual(no_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
892 self.assertEqual(with_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
893 self.assertFalse(no_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
894 self.assertFalse(with_params.has_checksum)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
895
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
896 self.assertEqual(len(with_size.getvalue()),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
897 len(no_size.getvalue()) + 1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
898
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
899 def test_no_dict_id(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
900 samples = []
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
901 for i in range(128):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
902 samples.append(b'foo' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
903 samples.append(b'bar' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
904 samples.append(b'foobar' * 64)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
905
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
906 d = zstd.train_dictionary(1024, samples)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
907
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
908 with_dict_id = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
909 cctx = zstd.ZstdCompressor(level=1, dict_data=d)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
910 with cctx.stream_writer(with_dict_id) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
911 self.assertEqual(compressor.write(b'foobarfoobar'), 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
912
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
913 self.assertEqual(with_dict_id.getvalue()[4:5], b'\x03')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
914
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
915 cctx = zstd.ZstdCompressor(level=1, dict_data=d, write_dict_id=False)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
916 no_dict_id = io.BytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
917 with cctx.stream_writer(no_dict_id) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
918 self.assertEqual(compressor.write(b'foobarfoobar'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
919
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
920 self.assertEqual(no_dict_id.getvalue()[4:5], b'\x00')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
921
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
922 no_params = zstd.get_frame_parameters(no_dict_id.getvalue())
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
923 with_params = zstd.get_frame_parameters(with_dict_id.getvalue())
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
924 self.assertEqual(no_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
925 self.assertEqual(with_params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
926 self.assertEqual(no_params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
927 self.assertEqual(with_params.dict_id, d.dict_id())
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
928 self.assertFalse(no_params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
929 self.assertFalse(with_params.has_checksum)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
930
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
931 self.assertEqual(len(with_dict_id.getvalue()),
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
932 len(no_dict_id.getvalue()) + 4)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
933
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
934 def test_memory_size(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
935 cctx = zstd.ZstdCompressor(level=3)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
936 buffer = io.BytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
937 with cctx.stream_writer(buffer) as compressor:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
938 compressor.write(b'foo')
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
939 size = compressor.memory_size()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
940
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
941 self.assertGreater(size, 100000)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
942
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
943 def test_write_size(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
944 cctx = zstd.ZstdCompressor(level=3)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
945 dest = OpCountingBytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
946 with cctx.stream_writer(dest, write_size=1) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
947 self.assertEqual(compressor.write(b'foo'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
948 self.assertEqual(compressor.write(b'bar'), 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
949 self.assertEqual(compressor.write(b'foobar'), 0)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
950
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
951 self.assertEqual(len(dest.getvalue()), dest._write_count)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
952
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
953 def test_flush_repeated(self):
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
954 cctx = zstd.ZstdCompressor(level=3)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
955 dest = OpCountingBytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
956 with cctx.stream_writer(dest) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
957 self.assertEqual(compressor.write(b'foo'), 0)
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
958 self.assertEqual(dest._write_count, 0)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
959 self.assertEqual(compressor.flush(), 12)
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
960 self.assertEqual(dest._write_count, 1)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
961 self.assertEqual(compressor.write(b'bar'), 0)
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
962 self.assertEqual(dest._write_count, 1)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
963 self.assertEqual(compressor.flush(), 6)
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
964 self.assertEqual(dest._write_count, 2)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
965 self.assertEqual(compressor.write(b'baz'), 0)
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
966
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
967 self.assertEqual(dest._write_count, 3)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
968
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
969 def test_flush_empty_block(self):
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
970 cctx = zstd.ZstdCompressor(level=3, write_checksum=True)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
971 dest = OpCountingBytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
972 with cctx.stream_writer(dest) as compressor:
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
973 self.assertEqual(compressor.write(b'foobar' * 8192), 0)
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
974 count = dest._write_count
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
975 offset = dest.tell()
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
976 self.assertEqual(compressor.flush(), 23)
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
977 self.assertGreater(dest._write_count, count)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
978 self.assertGreater(dest.tell(), offset)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
979 offset = dest.tell()
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
980 # Ending the write here should cause an empty block to be written
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
981 # to denote end of frame.
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
982
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
983 trailing = dest.getvalue()[offset:]
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
984 # 3 bytes block header + 4 bytes frame checksum
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
985 self.assertEqual(len(trailing), 7)
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
986
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
987 header = trailing[0:3]
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
988 self.assertEqual(header, b'\x01\x00\x00')
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
989
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
990 def test_multithreaded(self):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
991 dest = io.BytesIO()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
992 cctx = zstd.ZstdCompressor(threads=2)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
993 with cctx.stream_writer(dest) as compressor:
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
994 compressor.write(b'a' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
995 compressor.write(b'b' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
996 compressor.write(b'c' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
997
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
998 self.assertEqual(len(dest.getvalue()), 295)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
999
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1000 def test_tell(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1001 dest = io.BytesIO()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1002 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1003 with cctx.stream_writer(dest) as compressor:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1004 self.assertEqual(compressor.tell(), 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1005
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1006 for i in range(256):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1007 compressor.write(b'foo' * (i + 1))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1008 self.assertEqual(compressor.tell(), dest.tell())
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1009
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1010 def test_bad_size(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1011 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1012
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1013 dest = io.BytesIO()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1014
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1015 with self.assertRaisesRegexp(zstd.ZstdError, 'Src size is incorrect'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1016 with cctx.stream_writer(dest, size=2) as compressor:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1017 compressor.write(b'foo')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1018
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1019 # Test another operation.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1020 with cctx.stream_writer(dest, size=42):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1021 pass
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1022
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1023 def test_tarfile_compat(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1024 raise unittest.SkipTest('not yet fully working')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1025
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1026 dest = io.BytesIO()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1027 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1028 with cctx.stream_writer(dest) as compressor:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1029 with tarfile.open('tf', mode='w', fileobj=compressor) as tf:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1030 tf.add(__file__, 'test_compressor.py')
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1031
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1032 dest.seek(0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1033
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1034 dctx = zstd.ZstdDecompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1035 with dctx.stream_reader(dest) as reader:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1036 with tarfile.open(mode='r:', fileobj=reader) as tf:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1037 for member in tf:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1038 self.assertEqual(member.name, 'test_compressor.py')
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1039
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1040 @make_cffi
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1041 class TestCompressor_read_to_iter(unittest.TestCase):
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1042 def test_type_validation(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1043 cctx = zstd.ZstdCompressor()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1044
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1045 # Object with read() works.
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1046 for chunk in cctx.read_to_iter(io.BytesIO()):
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1047 pass
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1048
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1049 # Buffer protocol works.
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1050 for chunk in cctx.read_to_iter(b'foobar'):
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1051 pass
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1052
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1053 with self.assertRaisesRegexp(ValueError, 'must pass an object with a read'):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1054 for chunk in cctx.read_to_iter(True):
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1055 pass
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1056
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1057 def test_read_empty(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1058 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1059
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1060 source = io.BytesIO()
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1061 it = cctx.read_to_iter(source)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1062 chunks = list(it)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1063 self.assertEqual(len(chunks), 1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1064 compressed = b''.join(chunks)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1065 self.assertEqual(compressed, b'\x28\xb5\x2f\xfd\x00\x48\x01\x00\x00')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1066
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1067 # And again with the buffer protocol.
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1068 it = cctx.read_to_iter(b'')
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1069 chunks = list(it)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1070 self.assertEqual(len(chunks), 1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1071 compressed2 = b''.join(chunks)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1072 self.assertEqual(compressed2, compressed)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1073
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1074 def test_read_large(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1075 cctx = zstd.ZstdCompressor(level=1, write_content_size=False)
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1076
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1077 source = io.BytesIO()
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1078 source.write(b'f' * zstd.COMPRESSION_RECOMMENDED_INPUT_SIZE)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1079 source.write(b'o')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1080 source.seek(0)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1081
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1082 # Creating an iterator should not perform any compression until
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1083 # first read.
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1084 it = cctx.read_to_iter(source, size=len(source.getvalue()))
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1085 self.assertEqual(source.tell(), 0)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1086
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1087 # We should have exactly 2 output chunks.
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1088 chunks = []
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1089 chunk = next(it)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1090 self.assertIsNotNone(chunk)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1091 self.assertEqual(source.tell(), zstd.COMPRESSION_RECOMMENDED_INPUT_SIZE)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1092 chunks.append(chunk)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1093 chunk = next(it)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1094 self.assertIsNotNone(chunk)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1095 chunks.append(chunk)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1096
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1097 self.assertEqual(source.tell(), len(source.getvalue()))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1098
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1099 with self.assertRaises(StopIteration):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1100 next(it)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1101
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1102 # And again for good measure.
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1103 with self.assertRaises(StopIteration):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1104 next(it)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1105
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1106 # We should get the same output as the one-shot compression mechanism.
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1107 self.assertEqual(b''.join(chunks), cctx.compress(source.getvalue()))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1108
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1109 params = zstd.get_frame_parameters(b''.join(chunks))
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1110 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1111 self.assertEqual(params.window_size, 262144)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1112 self.assertEqual(params.dict_id, 0)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1113 self.assertFalse(params.has_checksum)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30822
diff changeset
1114
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1115 # Now check the buffer protocol.
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1116 it = cctx.read_to_iter(source.getvalue())
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1117 chunks = list(it)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1118 self.assertEqual(len(chunks), 2)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1119
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1120 params = zstd.get_frame_parameters(b''.join(chunks))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1121 self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1122 #self.assertEqual(params.window_size, 262144)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1123 self.assertEqual(params.dict_id, 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1124 self.assertFalse(params.has_checksum)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1125
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1126 self.assertEqual(b''.join(chunks), cctx.compress(source.getvalue()))
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1127
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1128 def test_read_write_size(self):
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1129 source = OpCountingBytesIO(b'foobarfoobar')
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1130 cctx = zstd.ZstdCompressor(level=3)
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1131 for chunk in cctx.read_to_iter(source, read_size=1, write_size=1):
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1132 self.assertEqual(len(chunk), 1)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1133
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1134 self.assertEqual(source._read_count, len(source.getvalue()) + 1)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1135
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1136 def test_multithreaded(self):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1137 source = io.BytesIO()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1138 source.write(b'a' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1139 source.write(b'b' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1140 source.write(b'c' * 1048576)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1141 source.seek(0)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1142
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1143 cctx = zstd.ZstdCompressor(threads=2)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1144
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1145 compressed = b''.join(cctx.read_to_iter(source))
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1146 self.assertEqual(len(compressed), 295)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1147
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1148 def test_bad_size(self):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1149 cctx = zstd.ZstdCompressor()
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1150
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1151 source = io.BytesIO(b'a' * 42)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1152
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1153 with self.assertRaisesRegexp(zstd.ZstdError, 'Src size is incorrect'):
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1154 b''.join(cctx.read_to_iter(source, size=2))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1155
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1156 # Test another operation on errored compressor.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1157 b''.join(cctx.read_to_iter(source))
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1158
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1159
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1160 class TestCompressor_multi_compress_to_buffer(unittest.TestCase):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1161 def test_invalid_inputs(self):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1162 cctx = zstd.ZstdCompressor()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1163
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1164 with self.assertRaises(TypeError):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1165 cctx.multi_compress_to_buffer(True)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1166
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1167 with self.assertRaises(TypeError):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1168 cctx.multi_compress_to_buffer((1, 2))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1169
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1170 with self.assertRaisesRegexp(TypeError, 'item 0 not a bytes like object'):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1171 cctx.multi_compress_to_buffer([u'foo'])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1172
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1173 def test_empty_input(self):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1174 cctx = zstd.ZstdCompressor()
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1175
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1176 with self.assertRaisesRegexp(ValueError, 'no source elements found'):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1177 cctx.multi_compress_to_buffer([])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1178
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1179 with self.assertRaisesRegexp(ValueError, 'source elements are empty'):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1180 cctx.multi_compress_to_buffer([b'', b'', b''])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1181
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1182 def test_list_input(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1183 cctx = zstd.ZstdCompressor(write_checksum=True)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1184
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1185 original = [b'foo' * 12, b'bar' * 6]
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1186 frames = [cctx.compress(c) for c in original]
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1187 b = cctx.multi_compress_to_buffer(original)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1188
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1189 self.assertIsInstance(b, zstd.BufferWithSegmentsCollection)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1190
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1191 self.assertEqual(len(b), 2)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1192 self.assertEqual(b.size(), 44)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1193
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1194 self.assertEqual(b[0].tobytes(), frames[0])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1195 self.assertEqual(b[1].tobytes(), frames[1])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1196
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1197 def test_buffer_with_segments_input(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1198 cctx = zstd.ZstdCompressor(write_checksum=True)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1199
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1200 original = [b'foo' * 4, b'bar' * 6]
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1201 frames = [cctx.compress(c) for c in original]
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1202
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1203 offsets = struct.pack('=QQQQ', 0, len(original[0]),
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1204 len(original[0]), len(original[1]))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1205 segments = zstd.BufferWithSegments(b''.join(original), offsets)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1206
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1207 result = cctx.multi_compress_to_buffer(segments)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1208
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1209 self.assertEqual(len(result), 2)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1210 self.assertEqual(result.size(), 47)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1211
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1212 self.assertEqual(result[0].tobytes(), frames[0])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1213 self.assertEqual(result[1].tobytes(), frames[1])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1214
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1215 def test_buffer_with_segments_collection_input(self):
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1216 cctx = zstd.ZstdCompressor(write_checksum=True)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1217
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1218 original = [
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1219 b'foo1',
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1220 b'foo2' * 2,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1221 b'foo3' * 3,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1222 b'foo4' * 4,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1223 b'foo5' * 5,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1224 ]
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1225
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1226 frames = [cctx.compress(c) for c in original]
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1227
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1228 b = b''.join([original[0], original[1]])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1229 b1 = zstd.BufferWithSegments(b, struct.pack('=QQQQ',
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1230 0, len(original[0]),
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1231 len(original[0]), len(original[1])))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1232 b = b''.join([original[2], original[3], original[4]])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1233 b2 = zstd.BufferWithSegments(b, struct.pack('=QQQQQQ',
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1234 0, len(original[2]),
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1235 len(original[2]), len(original[3]),
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1236 len(original[2]) + len(original[3]), len(original[4])))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1237
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1238 c = zstd.BufferWithSegmentsCollection(b1, b2)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1239
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1240 result = cctx.multi_compress_to_buffer(c)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1241
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1242 self.assertEqual(len(result), len(frames))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1243
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1244 for i, frame in enumerate(frames):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1245 self.assertEqual(result[i].tobytes(), frame)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1246
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1247 def test_multiple_threads(self):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1248 # threads argument will cause multi-threaded ZSTD APIs to be used, which will
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1249 # make output different.
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1250 refcctx = zstd.ZstdCompressor(write_checksum=True)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1251 reference = [refcctx.compress(b'x' * 64), refcctx.compress(b'y' * 64)]
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1252
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1253 cctx = zstd.ZstdCompressor(write_checksum=True)
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1254
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1255 frames = []
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1256 frames.extend(b'x' * 64 for i in range(256))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1257 frames.extend(b'y' * 64 for i in range(256))
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1258
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1259 result = cctx.multi_compress_to_buffer(frames, threads=-1)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1260
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1261 self.assertEqual(len(result), 512)
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1262 for i in range(512):
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1263 if i < 256:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1264 self.assertEqual(result[i].tobytes(), reference[0])
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1265 else:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1266 self.assertEqual(result[i].tobytes(), reference[1])