author | Gregory Szorc <gregory.szorc@gmail.com> |
Sat, 01 Apr 2017 15:24:03 -0700 | |
changeset 31796 | e0dc40530c5a |
parent 30895 | c32454d69b85 |
child 37495 | b1fb341d8a61 |
permissions | -rw-r--r-- |
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import hashlib |
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import io |
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import struct |
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import sys |
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|
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try: |
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import unittest2 as unittest |
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except ImportError: |
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parents:
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import unittest |
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import zstd |
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parents:
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from .common import ( |
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make_cffi, |
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OpCountingBytesIO, |
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) |
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if sys.version_info[0] >= 3: |
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next = lambda it: it.__next__() |
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else: |
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next = lambda it: it.next() |
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def multithreaded_chunk_size(level, source_size=0): |
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params = zstd.get_compression_parameters(level, source_size) |
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return 1 << (params.window_log + 2) |
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@make_cffi |
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class TestCompressor(unittest.TestCase): |
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def test_level_bounds(self): |
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with self.assertRaises(ValueError): |
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zstd.ZstdCompressor(level=0) |
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|
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with self.assertRaises(ValueError): |
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zstd.ZstdCompressor(level=23) |
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|
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@make_cffi |
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class TestCompressor_compress(unittest.TestCase): |
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def test_multithreaded_unsupported(self): |
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samples = [] |
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for i in range(128): |
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samples.append(b'foo' * 64) |
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samples.append(b'bar' * 64) |
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d = zstd.train_dictionary(8192, samples) |
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|
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cctx = zstd.ZstdCompressor(dict_data=d, threads=2) |
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with self.assertRaisesRegexp(zstd.ZstdError, 'compress\(\) cannot be used with both dictionaries and multi-threaded compression'): |
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cctx.compress(b'foo') |
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params = zstd.get_compression_parameters(3) |
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cctx = zstd.ZstdCompressor(compression_params=params, threads=2) |
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with self.assertRaisesRegexp(zstd.ZstdError, 'compress\(\) cannot be used with both compression parameters and multi-threaded compression'): |
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cctx.compress(b'foo') |
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|
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def test_compress_empty(self): |
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cctx = zstd.ZstdCompressor(level=1) |
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result = cctx.compress(b'') |
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self.assertEqual(result, b'\x28\xb5\x2f\xfd\x00\x48\x01\x00\x00') |
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params = zstd.get_frame_parameters(result) |
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self.assertEqual(params.content_size, 0) |
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self.assertEqual(params.window_size, 524288) |
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self.assertEqual(params.dict_id, 0) |
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self.assertFalse(params.has_checksum, 0) |
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|
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# TODO should be temporary until https://github.com/facebook/zstd/issues/506 |
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# is fixed. |
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cctx = zstd.ZstdCompressor(write_content_size=True) |
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with self.assertRaises(ValueError): |
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cctx.compress(b'') |
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|
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cctx.compress(b'', allow_empty=True) |
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|
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def test_compress_large(self): |
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chunks = [] |
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for i in range(255): |
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chunks.append(struct.Struct('>B').pack(i) * 16384) |
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|
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cctx = zstd.ZstdCompressor(level=3) |
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result = cctx.compress(b''.join(chunks)) |
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self.assertEqual(len(result), 999) |
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self.assertEqual(result[0:4], b'\x28\xb5\x2f\xfd') |
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88 |
|
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# This matches the test for read_from() below. |
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cctx = zstd.ZstdCompressor(level=1) |
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result = cctx.compress(b'f' * zstd.COMPRESSION_RECOMMENDED_INPUT_SIZE + b'o') |
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self.assertEqual(result, b'\x28\xb5\x2f\xfd\x00\x40\x54\x00\x00' |
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b'\x10\x66\x66\x01\x00\xfb\xff\x39\xc0' |
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b'\x02\x09\x00\x00\x6f') |
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95 |
|
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def test_write_checksum(self): |
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cctx = zstd.ZstdCompressor(level=1) |
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no_checksum = cctx.compress(b'foobar') |
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cctx = zstd.ZstdCompressor(level=1, write_checksum=True) |
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100 |
with_checksum = cctx.compress(b'foobar') |
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101 |
|
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102 |
self.assertEqual(len(with_checksum), len(no_checksum) + 4) |
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103 |
|
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104 |
no_params = zstd.get_frame_parameters(no_checksum) |
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105 |
with_params = zstd.get_frame_parameters(with_checksum) |
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106 |
|
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107 |
self.assertFalse(no_params.has_checksum) |
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108 |
self.assertTrue(with_params.has_checksum) |
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|
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def test_write_content_size(self): |
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cctx = zstd.ZstdCompressor(level=1) |
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no_size = cctx.compress(b'foobar' * 256) |
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cctx = zstd.ZstdCompressor(level=1, write_content_size=True) |
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with_size = cctx.compress(b'foobar' * 256) |
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115 |
|
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self.assertEqual(len(with_size), len(no_size) + 1) |
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|
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no_params = zstd.get_frame_parameters(no_size) |
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with_params = zstd.get_frame_parameters(with_size) |
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self.assertEqual(no_params.content_size, 0) |
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self.assertEqual(with_params.content_size, 1536) |
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|
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def test_no_dict_id(self): |
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samples = [] |
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for i in range(128): |
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samples.append(b'foo' * 64) |
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samples.append(b'bar' * 64) |
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samples.append(b'foobar' * 64) |
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129 |
|
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d = zstd.train_dictionary(1024, samples) |
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131 |
|
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cctx = zstd.ZstdCompressor(level=1, dict_data=d) |
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with_dict_id = cctx.compress(b'foobarfoobar') |
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|
134 |
|
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cctx = zstd.ZstdCompressor(level=1, dict_data=d, write_dict_id=False) |
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no_dict_id = cctx.compress(b'foobarfoobar') |
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|
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|
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self.assertEqual(len(with_dict_id), len(no_dict_id) + 4) |
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139 |
|
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no_params = zstd.get_frame_parameters(no_dict_id) |
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with_params = zstd.get_frame_parameters(with_dict_id) |
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self.assertEqual(no_params.dict_id, 0) |
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self.assertEqual(with_params.dict_id, 1584102229) |
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|
144 |
|
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|
145 |
def test_compress_dict_multiple(self): |
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samples = [] |
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|
147 |
for i in range(128): |
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samples.append(b'foo' * 64) |
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|
149 |
samples.append(b'bar' * 64) |
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|
150 |
samples.append(b'foobar' * 64) |
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|
151 |
|
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152 |
d = zstd.train_dictionary(8192, samples) |
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|
153 |
|
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|
154 |
cctx = zstd.ZstdCompressor(level=1, dict_data=d) |
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|
155 |
|
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|
156 |
for i in range(32): |
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157 |
cctx.compress(b'foo bar foobar foo bar foobar') |
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|
158 |
|
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159 |
def test_multithreaded(self): |
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chunk_size = multithreaded_chunk_size(1) |
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source = b''.join([b'x' * chunk_size, b'y' * chunk_size]) |
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|
162 |
|
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|
163 |
cctx = zstd.ZstdCompressor(level=1, threads=2) |
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164 |
compressed = cctx.compress(source) |
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|
165 |
|
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166 |
params = zstd.get_frame_parameters(compressed) |
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167 |
self.assertEqual(params.content_size, chunk_size * 2) |
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|
168 |
self.assertEqual(params.dict_id, 0) |
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169 |
self.assertFalse(params.has_checksum) |
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|
170 |
|
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|
171 |
dctx = zstd.ZstdDecompressor() |
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172 |
self.assertEqual(dctx.decompress(compressed), source) |
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|
173 |
|
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|
174 |
|
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|
175 |
@make_cffi |
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|
176 |
class TestCompressor_compressobj(unittest.TestCase): |
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|
177 |
def test_compressobj_empty(self): |
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|
178 |
cctx = zstd.ZstdCompressor(level=1) |
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|
179 |
cobj = cctx.compressobj() |
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|
180 |
self.assertEqual(cobj.compress(b''), b'') |
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|
181 |
self.assertEqual(cobj.flush(), |
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|
182 |
b'\x28\xb5\x2f\xfd\x00\x48\x01\x00\x00') |
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|
183 |
|
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|
184 |
def test_compressobj_large(self): |
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|
185 |
chunks = [] |
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|
186 |
for i in range(255): |
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|
187 |
chunks.append(struct.Struct('>B').pack(i) * 16384) |
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|
188 |
|
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|
189 |
cctx = zstd.ZstdCompressor(level=3) |
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|
190 |
cobj = cctx.compressobj() |
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|
191 |
|
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|
192 |
result = cobj.compress(b''.join(chunks)) + cobj.flush() |
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|
193 |
self.assertEqual(len(result), 999) |
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|
194 |
self.assertEqual(result[0:4], b'\x28\xb5\x2f\xfd') |
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|
195 |
|
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|
196 |
params = zstd.get_frame_parameters(result) |
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|
197 |
self.assertEqual(params.content_size, 0) |
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|
198 |
self.assertEqual(params.window_size, 1048576) |
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|
199 |
self.assertEqual(params.dict_id, 0) |
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|
200 |
self.assertFalse(params.has_checksum) |
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|
201 |
|
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|
202 |
def test_write_checksum(self): |
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|
203 |
cctx = zstd.ZstdCompressor(level=1) |
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|
204 |
cobj = cctx.compressobj() |
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|
205 |
no_checksum = cobj.compress(b'foobar') + cobj.flush() |
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|
206 |
cctx = zstd.ZstdCompressor(level=1, write_checksum=True) |
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|
207 |
cobj = cctx.compressobj() |
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|
208 |
with_checksum = cobj.compress(b'foobar') + cobj.flush() |
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|
209 |
|
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|
210 |
no_params = zstd.get_frame_parameters(no_checksum) |
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|
211 |
with_params = zstd.get_frame_parameters(with_checksum) |
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|
212 |
self.assertEqual(no_params.content_size, 0) |
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|
213 |
self.assertEqual(with_params.content_size, 0) |
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|
214 |
self.assertEqual(no_params.dict_id, 0) |
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|
215 |
self.assertEqual(with_params.dict_id, 0) |
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|
216 |
self.assertFalse(no_params.has_checksum) |
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|
217 |
self.assertTrue(with_params.has_checksum) |
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|
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self.assertEqual(len(with_checksum), len(no_checksum) + 4) |
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|
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def test_write_content_size(self): |
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cctx = zstd.ZstdCompressor(level=1) |
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cobj = cctx.compressobj(size=len(b'foobar' * 256)) |
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no_size = cobj.compress(b'foobar' * 256) + cobj.flush() |
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cctx = zstd.ZstdCompressor(level=1, write_content_size=True) |
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cobj = cctx.compressobj(size=len(b'foobar' * 256)) |
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with_size = cobj.compress(b'foobar' * 256) + cobj.flush() |
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|
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no_params = zstd.get_frame_parameters(no_size) |
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with_params = zstd.get_frame_parameters(with_size) |
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self.assertEqual(no_params.content_size, 0) |
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self.assertEqual(with_params.content_size, 1536) |
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self.assertEqual(no_params.dict_id, 0) |
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self.assertEqual(with_params.dict_id, 0) |
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self.assertFalse(no_params.has_checksum) |
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self.assertFalse(with_params.has_checksum) |
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|
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self.assertEqual(len(with_size), len(no_size) + 1) |
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|
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|
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|
240 |
def test_compress_after_finished(self): |
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cctx = zstd.ZstdCompressor() |
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cobj = cctx.compressobj() |
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|
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|
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cobj.compress(b'foo') |
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cobj.flush() |
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|
246 |
|
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with self.assertRaisesRegexp(zstd.ZstdError, 'cannot call compress\(\) after compressor'): |
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cobj.compress(b'foo') |
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|
249 |
|
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|
250 |
with self.assertRaisesRegexp(zstd.ZstdError, 'compressor object already finished'): |
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cobj.flush() |
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|
252 |
|
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def test_flush_block_repeated(self): |
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|
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cctx = zstd.ZstdCompressor(level=1) |
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|
255 |
cobj = cctx.compressobj() |
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|
256 |
|
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|
257 |
self.assertEqual(cobj.compress(b'foo'), b'') |
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|
258 |
self.assertEqual(cobj.flush(zstd.COMPRESSOBJ_FLUSH_BLOCK), |
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|
259 |
b'\x28\xb5\x2f\xfd\x00\x48\x18\x00\x00foo') |
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|
260 |
self.assertEqual(cobj.compress(b'bar'), b'') |
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|
261 |
# 3 byte header plus content. |
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|
262 |
self.assertEqual(cobj.flush(), b'\x19\x00\x00bar') |
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|
263 |
|
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|
264 |
def test_flush_empty_block(self): |
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|
265 |
cctx = zstd.ZstdCompressor(write_checksum=True) |
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|
266 |
cobj = cctx.compressobj() |
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|
267 |
|
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|
268 |
cobj.compress(b'foobar') |
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|
269 |
cobj.flush(zstd.COMPRESSOBJ_FLUSH_BLOCK) |
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|
270 |
# No-op if no block is active (this is internal to zstd). |
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|
271 |
self.assertEqual(cobj.flush(zstd.COMPRESSOBJ_FLUSH_BLOCK), b'') |
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|
272 |
|
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|
273 |
trailing = cobj.flush() |
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|
274 |
# 3 bytes block header + 4 bytes frame checksum |
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|
275 |
self.assertEqual(len(trailing), 7) |
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|
276 |
header = trailing[0:3] |
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|
277 |
self.assertEqual(header, b'\x01\x00\x00') |
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|
278 |
|
31796
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zstd: vendor python-zstandard 0.8.0
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|
279 |
def test_multithreaded(self): |
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|
280 |
source = io.BytesIO() |
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|
281 |
source.write(b'a' * 1048576) |
e0dc40530c5a
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|
282 |
source.write(b'b' * 1048576) |
e0dc40530c5a
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|
283 |
source.write(b'c' * 1048576) |
e0dc40530c5a
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|
284 |
source.seek(0) |
e0dc40530c5a
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changeset
|
285 |
|
e0dc40530c5a
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|
286 |
cctx = zstd.ZstdCompressor(level=1, threads=2) |
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|
287 |
cobj = cctx.compressobj() |
e0dc40530c5a
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|
288 |
|
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|
289 |
chunks = [] |
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|
290 |
while True: |
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|
291 |
d = source.read(8192) |
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|
292 |
if not d: |
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|
293 |
break |
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|
294 |
|
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|
295 |
chunks.append(cobj.compress(d)) |
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|
296 |
|
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|
297 |
chunks.append(cobj.flush()) |
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|
298 |
|
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|
299 |
compressed = b''.join(chunks) |
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|
300 |
|
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|
301 |
self.assertEqual(len(compressed), 295) |
e0dc40530c5a
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|
302 |
|
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changeset
|
303 |
|
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|
304 |
@make_cffi |
30435
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parents:
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changeset
|
305 |
class TestCompressor_copy_stream(unittest.TestCase): |
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|
306 |
def test_no_read(self): |
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|
307 |
source = object() |
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|
308 |
dest = io.BytesIO() |
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changeset
|
309 |
|
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Gregory Szorc <gregory.szorc@gmail.com>
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changeset
|
310 |
cctx = zstd.ZstdCompressor() |
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parents:
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changeset
|
311 |
with self.assertRaises(ValueError): |
b86a448a2965
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changeset
|
312 |
cctx.copy_stream(source, dest) |
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|
313 |
|
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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changeset
|
314 |
def test_no_write(self): |
b86a448a2965
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changeset
|
315 |
source = io.BytesIO() |
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changeset
|
316 |
dest = object() |
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changeset
|
317 |
|
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changeset
|
318 |
cctx = zstd.ZstdCompressor() |
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zstd: vendor python-zstandard 0.5.0
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parents:
diff
changeset
|
319 |
with self.assertRaises(ValueError): |
b86a448a2965
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changeset
|
320 |
cctx.copy_stream(source, dest) |
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parents:
diff
changeset
|
321 |
|
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changeset
|
322 |
def test_empty(self): |
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parents:
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changeset
|
323 |
source = io.BytesIO() |
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parents:
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changeset
|
324 |
dest = io.BytesIO() |
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parents:
diff
changeset
|
325 |
|
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parents:
diff
changeset
|
326 |
cctx = zstd.ZstdCompressor(level=1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
327 |
r, w = cctx.copy_stream(source, dest) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
328 |
self.assertEqual(int(r), 0) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
329 |
self.assertEqual(w, 9) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
330 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
331 |
self.assertEqual(dest.getvalue(), |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
332 |
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
|
333 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
334 |
def test_large_data(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
335 |
source = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
336 |
for i in range(255): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
337 |
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
|
338 |
source.seek(0) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
339 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
340 |
dest = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
341 |
cctx = zstd.ZstdCompressor() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
342 |
r, w = cctx.copy_stream(source, dest) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
343 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
344 |
self.assertEqual(r, 255 * 16384) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
345 |
self.assertEqual(w, 999) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
346 |
|
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
347 |
params = zstd.get_frame_parameters(dest.getvalue()) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
348 |
self.assertEqual(params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
349 |
self.assertEqual(params.window_size, 1048576) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
350 |
self.assertEqual(params.dict_id, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
351 |
self.assertFalse(params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
352 |
|
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
353 |
def test_write_checksum(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
354 |
source = io.BytesIO(b'foobar') |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
355 |
no_checksum = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
356 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
357 |
cctx = zstd.ZstdCompressor(level=1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
358 |
cctx.copy_stream(source, no_checksum) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
359 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
360 |
source.seek(0) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
361 |
with_checksum = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
362 |
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
|
363 |
cctx.copy_stream(source, with_checksum) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
364 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
365 |
self.assertEqual(len(with_checksum.getvalue()), |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
366 |
len(no_checksum.getvalue()) + 4) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
367 |
|
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
368 |
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
|
369 |
with_params = zstd.get_frame_parameters(with_checksum.getvalue()) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
370 |
self.assertEqual(no_params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
371 |
self.assertEqual(with_params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
372 |
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
|
373 |
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
|
374 |
self.assertFalse(no_params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
375 |
self.assertTrue(with_params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
376 |
|
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
377 |
def test_write_content_size(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
378 |
source = io.BytesIO(b'foobar' * 256) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
379 |
no_size = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
380 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
381 |
cctx = zstd.ZstdCompressor(level=1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
382 |
cctx.copy_stream(source, no_size) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
383 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
384 |
source.seek(0) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
385 |
with_size = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
386 |
cctx = zstd.ZstdCompressor(level=1, write_content_size=True) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
387 |
cctx.copy_stream(source, with_size) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
388 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
389 |
# 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
|
390 |
self.assertEqual(len(with_size.getvalue()), |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
391 |
len(no_size.getvalue())) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
392 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
393 |
source.seek(0) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
394 |
with_size = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
395 |
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
|
396 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
397 |
# 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
|
398 |
self.assertEqual(len(with_size.getvalue()), |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
399 |
len(no_size.getvalue()) + 1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
400 |
|
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
401 |
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
|
402 |
with_params = zstd.get_frame_parameters(with_size.getvalue()) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
403 |
self.assertEqual(no_params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
404 |
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
|
405 |
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
|
406 |
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
|
407 |
self.assertFalse(no_params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
408 |
self.assertFalse(with_params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
409 |
|
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
410 |
def test_read_write_size(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
411 |
source = OpCountingBytesIO(b'foobarfoobar') |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
412 |
dest = OpCountingBytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
413 |
cctx = zstd.ZstdCompressor() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
414 |
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
|
415 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
416 |
self.assertEqual(r, len(source.getvalue())) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
417 |
self.assertEqual(w, 21) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
418 |
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
|
419 |
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
|
420 |
|
31796
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
421 |
def test_multithreaded(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
422 |
source = io.BytesIO() |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
423 |
source.write(b'a' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
424 |
source.write(b'b' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
425 |
source.write(b'c' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
426 |
source.seek(0) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
427 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
428 |
dest = io.BytesIO() |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
429 |
cctx = zstd.ZstdCompressor(threads=2) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
430 |
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
|
431 |
self.assertEqual(r, 3145728) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
432 |
self.assertEqual(w, 295) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
433 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
434 |
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
|
435 |
self.assertEqual(params.content_size, 0) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
436 |
self.assertEqual(params.dict_id, 0) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
437 |
self.assertFalse(params.has_checksum) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
438 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
439 |
# Writing content size and checksum works. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
440 |
cctx = zstd.ZstdCompressor(threads=2, write_content_size=True, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
441 |
write_checksum=True) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
442 |
dest = io.BytesIO() |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
443 |
source.seek(0) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
444 |
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
|
445 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
446 |
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
|
447 |
self.assertEqual(params.content_size, 3145728) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
448 |
self.assertEqual(params.dict_id, 0) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
449 |
self.assertTrue(params.has_checksum) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
450 |
|
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
451 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
452 |
def compress(data, level): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
453 |
buffer = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
454 |
cctx = zstd.ZstdCompressor(level=level) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
455 |
with cctx.write_to(buffer) as compressor: |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
456 |
compressor.write(data) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
457 |
return buffer.getvalue() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
458 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
459 |
|
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
460 |
@make_cffi |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
461 |
class TestCompressor_write_to(unittest.TestCase): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
462 |
def test_empty(self): |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
463 |
result = compress(b'', 1) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
464 |
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
|
465 |
|
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
466 |
params = zstd.get_frame_parameters(result) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
467 |
self.assertEqual(params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
468 |
self.assertEqual(params.window_size, 524288) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
469 |
self.assertEqual(params.dict_id, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
470 |
self.assertFalse(params.has_checksum) |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
471 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
472 |
def test_multiple_compress(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
473 |
buffer = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
474 |
cctx = zstd.ZstdCompressor(level=5) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
475 |
with cctx.write_to(buffer) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
476 |
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
|
477 |
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
|
478 |
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
|
479 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
480 |
result = buffer.getvalue() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
481 |
self.assertEqual(result, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
482 |
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
|
483 |
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
|
484 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
485 |
def test_dictionary(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
486 |
samples = [] |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
487 |
for i in range(128): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
488 |
samples.append(b'foo' * 64) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
489 |
samples.append(b'bar' * 64) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
490 |
samples.append(b'foobar' * 64) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
491 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
492 |
d = zstd.train_dictionary(8192, samples) |
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 |
buffer = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
495 |
cctx = zstd.ZstdCompressor(level=9, dict_data=d) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
496 |
with cctx.write_to(buffer) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
497 |
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
|
498 |
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
|
499 |
self.assertEqual(compressor.write(b'foo' * 16384), 634) |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
500 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
501 |
compressed = buffer.getvalue() |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
502 |
|
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
503 |
params = zstd.get_frame_parameters(compressed) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
504 |
self.assertEqual(params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
505 |
self.assertEqual(params.window_size, 1024) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
506 |
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
|
507 |
self.assertFalse(params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
508 |
|
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
509 |
self.assertEqual(compressed[0:32], |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
510 |
b'\x28\xb5\x2f\xfd\x03\x00\x55\x7b\x6b\x5e\x54\x00' |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
511 |
b'\x00\x00\x02\xfc\xf4\xa5\xba\x23\x3f\x85\xb3\x54' |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
512 |
b'\x00\x00\x18\x6f\x6f\x66\x01\x00') |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
513 |
|
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
514 |
h = hashlib.sha1(compressed).hexdigest() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
515 |
self.assertEqual(h, '1c5bcd25181bcd8c1a73ea8773323e0056129f92') |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
516 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
517 |
def test_compression_params(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
518 |
params = zstd.CompressionParameters(20, 6, 12, 5, 4, 10, zstd.STRATEGY_FAST) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
519 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
520 |
buffer = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
521 |
cctx = zstd.ZstdCompressor(compression_params=params) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
522 |
with cctx.write_to(buffer) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
523 |
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
|
524 |
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
|
525 |
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
|
526 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
527 |
compressed = buffer.getvalue() |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
528 |
|
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
529 |
params = zstd.get_frame_parameters(compressed) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
530 |
self.assertEqual(params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
531 |
self.assertEqual(params.window_size, 1048576) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
532 |
self.assertEqual(params.dict_id, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
533 |
self.assertFalse(params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
534 |
|
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
535 |
h = hashlib.sha1(compressed).hexdigest() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
536 |
self.assertEqual(h, '1ae31f270ed7de14235221a604b31ecd517ebd99') |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
537 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
538 |
def test_write_checksum(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
539 |
no_checksum = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
540 |
cctx = zstd.ZstdCompressor(level=1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
541 |
with cctx.write_to(no_checksum) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
542 |
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
|
543 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
544 |
with_checksum = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
545 |
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
|
546 |
with cctx.write_to(with_checksum) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
547 |
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
|
548 |
|
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
549 |
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
|
550 |
with_params = zstd.get_frame_parameters(with_checksum.getvalue()) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
551 |
self.assertEqual(no_params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
552 |
self.assertEqual(with_params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
553 |
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
|
554 |
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
|
555 |
self.assertFalse(no_params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
556 |
self.assertTrue(with_params.has_checksum) |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
557 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
558 |
self.assertEqual(len(with_checksum.getvalue()), |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
559 |
len(no_checksum.getvalue()) + 4) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
560 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
561 |
def test_write_content_size(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
562 |
no_size = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
563 |
cctx = zstd.ZstdCompressor(level=1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
564 |
with cctx.write_to(no_size) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
565 |
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
|
566 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
567 |
with_size = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
568 |
cctx = zstd.ZstdCompressor(level=1, write_content_size=True) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
569 |
with cctx.write_to(with_size) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
570 |
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
|
571 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
572 |
# 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
|
573 |
# written. |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
574 |
self.assertEqual(len(with_size.getvalue()), |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
575 |
len(no_size.getvalue())) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
576 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
577 |
# Declaring size will write the header. |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
578 |
with_size = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
579 |
with cctx.write_to(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
|
580 |
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
|
581 |
|
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
582 |
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
|
583 |
with_params = zstd.get_frame_parameters(with_size.getvalue()) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
584 |
self.assertEqual(no_params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
585 |
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
|
586 |
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
|
587 |
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
|
588 |
self.assertFalse(no_params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
589 |
self.assertFalse(with_params.has_checksum) |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
590 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
591 |
self.assertEqual(len(with_size.getvalue()), |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
592 |
len(no_size.getvalue()) + 1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
593 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
594 |
def test_no_dict_id(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
595 |
samples = [] |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
596 |
for i in range(128): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
597 |
samples.append(b'foo' * 64) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
598 |
samples.append(b'bar' * 64) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
599 |
samples.append(b'foobar' * 64) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
600 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
601 |
d = zstd.train_dictionary(1024, samples) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
602 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
603 |
with_dict_id = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
604 |
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
|
605 |
with cctx.write_to(with_dict_id) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
606 |
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
|
607 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
608 |
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
|
609 |
no_dict_id = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
610 |
with cctx.write_to(no_dict_id) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
611 |
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
|
612 |
|
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
613 |
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
|
614 |
with_params = zstd.get_frame_parameters(with_dict_id.getvalue()) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
615 |
self.assertEqual(no_params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
616 |
self.assertEqual(with_params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
617 |
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
|
618 |
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
|
619 |
self.assertFalse(no_params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
620 |
self.assertFalse(with_params.has_checksum) |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
621 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
622 |
self.assertEqual(len(with_dict_id.getvalue()), |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
623 |
len(no_dict_id.getvalue()) + 4) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
624 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
625 |
def test_memory_size(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
626 |
cctx = zstd.ZstdCompressor(level=3) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
627 |
buffer = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
628 |
with cctx.write_to(buffer) as compressor: |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
629 |
size = compressor.memory_size() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
630 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
631 |
self.assertGreater(size, 100000) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
632 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
633 |
def test_write_size(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
634 |
cctx = zstd.ZstdCompressor(level=3) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
635 |
dest = OpCountingBytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
636 |
with cctx.write_to(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
|
637 |
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
|
638 |
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
|
639 |
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
|
640 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
641 |
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
|
642 |
|
30822
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
643 |
def test_flush_repeated(self): |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
644 |
cctx = zstd.ZstdCompressor(level=3) |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
645 |
dest = OpCountingBytesIO() |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
646 |
with cctx.write_to(dest) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
647 |
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
|
648 |
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
|
649 |
self.assertEqual(compressor.flush(), 12) |
30822
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
650 |
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
|
651 |
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
|
652 |
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
|
653 |
self.assertEqual(compressor.flush(), 6) |
30822
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
654 |
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
|
655 |
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
|
656 |
|
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
657 |
self.assertEqual(dest._write_count, 3) |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
658 |
|
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
659 |
def test_flush_empty_block(self): |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
660 |
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
|
661 |
dest = OpCountingBytesIO() |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
662 |
with cctx.write_to(dest) as compressor: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
663 |
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
|
664 |
count = dest._write_count |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
665 |
offset = dest.tell() |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
666 |
self.assertEqual(compressor.flush(), 23) |
30822
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
667 |
self.assertGreater(dest._write_count, count) |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
668 |
self.assertGreater(dest.tell(), offset) |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
669 |
offset = dest.tell() |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
670 |
# 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
|
671 |
# to denote end of frame. |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
672 |
|
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
673 |
trailing = dest.getvalue()[offset:] |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
674 |
# 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
|
675 |
self.assertEqual(len(trailing), 7) |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
676 |
|
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
677 |
header = trailing[0:3] |
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
678 |
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
|
679 |
|
31796
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
680 |
def test_multithreaded(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
681 |
dest = io.BytesIO() |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
682 |
cctx = zstd.ZstdCompressor(threads=2) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
683 |
with cctx.write_to(dest) as compressor: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
684 |
compressor.write(b'a' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
685 |
compressor.write(b'b' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
686 |
compressor.write(b'c' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
687 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
688 |
self.assertEqual(len(dest.getvalue()), 295) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
689 |
|
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
690 |
|
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
691 |
@make_cffi |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
692 |
class TestCompressor_read_from(unittest.TestCase): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
693 |
def test_type_validation(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
694 |
cctx = zstd.ZstdCompressor() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
695 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
696 |
# Object with read() works. |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
697 |
for chunk in cctx.read_from(io.BytesIO()): |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
698 |
pass |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
699 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
700 |
# Buffer protocol works. |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
701 |
for chunk in cctx.read_from(b'foobar'): |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
702 |
pass |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
703 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
704 |
with self.assertRaisesRegexp(ValueError, 'must pass an object with a read'): |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
705 |
for chunk in cctx.read_from(True): |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
706 |
pass |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
707 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
708 |
def test_read_empty(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
709 |
cctx = zstd.ZstdCompressor(level=1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
710 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
711 |
source = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
712 |
it = cctx.read_from(source) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
713 |
chunks = list(it) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
714 |
self.assertEqual(len(chunks), 1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
715 |
compressed = b''.join(chunks) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
716 |
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
|
717 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
718 |
# And again with the buffer protocol. |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
719 |
it = cctx.read_from(b'') |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
720 |
chunks = list(it) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
721 |
self.assertEqual(len(chunks), 1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
722 |
compressed2 = b''.join(chunks) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
723 |
self.assertEqual(compressed2, compressed) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
724 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
725 |
def test_read_large(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
726 |
cctx = zstd.ZstdCompressor(level=1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
727 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
728 |
source = io.BytesIO() |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
729 |
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
|
730 |
source.write(b'o') |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
731 |
source.seek(0) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
732 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
733 |
# 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
|
734 |
# first read. |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
735 |
it = cctx.read_from(source, size=len(source.getvalue())) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
736 |
self.assertEqual(source.tell(), 0) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
737 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
738 |
# We should have exactly 2 output chunks. |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
739 |
chunks = [] |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
740 |
chunk = next(it) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
741 |
self.assertIsNotNone(chunk) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
742 |
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
|
743 |
chunks.append(chunk) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
744 |
chunk = next(it) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
745 |
self.assertIsNotNone(chunk) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
746 |
chunks.append(chunk) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
747 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
748 |
self.assertEqual(source.tell(), len(source.getvalue())) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
749 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
750 |
with self.assertRaises(StopIteration): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
751 |
next(it) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
752 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
753 |
# And again for good measure. |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
754 |
with self.assertRaises(StopIteration): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
755 |
next(it) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
756 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
757 |
# 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
|
758 |
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
|
759 |
|
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
760 |
params = zstd.get_frame_parameters(b''.join(chunks)) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
761 |
self.assertEqual(params.content_size, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
762 |
self.assertEqual(params.window_size, 262144) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
763 |
self.assertEqual(params.dict_id, 0) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
764 |
self.assertFalse(params.has_checksum) |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30822
diff
changeset
|
765 |
|
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
766 |
# Now check the buffer protocol. |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
767 |
it = cctx.read_from(source.getvalue()) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
768 |
chunks = list(it) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
769 |
self.assertEqual(len(chunks), 2) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
770 |
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
|
771 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
772 |
def test_read_write_size(self): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
773 |
source = OpCountingBytesIO(b'foobarfoobar') |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
774 |
cctx = zstd.ZstdCompressor(level=3) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
775 |
for chunk in cctx.read_from(source, read_size=1, write_size=1): |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
776 |
self.assertEqual(len(chunk), 1) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
777 |
|
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
778 |
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
|
779 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
780 |
def test_multithreaded(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
781 |
source = io.BytesIO() |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
782 |
source.write(b'a' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
783 |
source.write(b'b' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
784 |
source.write(b'c' * 1048576) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
785 |
source.seek(0) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
786 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
787 |
cctx = zstd.ZstdCompressor(threads=2) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
788 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
789 |
compressed = b''.join(cctx.read_from(source)) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
790 |
self.assertEqual(len(compressed), 295) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
791 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
792 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
793 |
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
|
794 |
def test_multithreaded_unsupported(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
795 |
cctx = zstd.ZstdCompressor(threads=2) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
796 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
797 |
with self.assertRaisesRegexp(zstd.ZstdError, 'function cannot be called on ZstdCompressor configured for multi-threaded compression'): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
798 |
cctx.multi_compress_to_buffer([b'foo']) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
799 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
800 |
def test_invalid_inputs(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
801 |
cctx = zstd.ZstdCompressor() |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
802 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
803 |
with self.assertRaises(TypeError): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
804 |
cctx.multi_compress_to_buffer(True) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
805 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
806 |
with self.assertRaises(TypeError): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
807 |
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
|
808 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
809 |
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
|
810 |
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
|
811 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
812 |
def test_empty_input(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
813 |
cctx = zstd.ZstdCompressor() |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
814 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
815 |
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
|
816 |
cctx.multi_compress_to_buffer([]) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
817 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
818 |
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
|
819 |
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
|
820 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
821 |
def test_list_input(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
822 |
cctx = zstd.ZstdCompressor(write_content_size=True, write_checksum=True) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
823 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
824 |
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
|
825 |
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
|
826 |
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
|
827 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
828 |
self.assertIsInstance(b, zstd.BufferWithSegmentsCollection) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
829 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
830 |
self.assertEqual(len(b), 2) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
831 |
self.assertEqual(b.size(), 44) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
832 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
833 |
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
|
834 |
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
|
835 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
836 |
def test_buffer_with_segments_input(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
837 |
cctx = zstd.ZstdCompressor(write_content_size=True, write_checksum=True) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
838 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
839 |
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
|
840 |
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
|
841 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
842 |
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
|
843 |
len(original[0]), len(original[1])) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
844 |
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
|
845 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
846 |
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
|
847 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
848 |
self.assertEqual(len(result), 2) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
849 |
self.assertEqual(result.size(), 47) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
850 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
851 |
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
|
852 |
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
|
853 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
854 |
def test_buffer_with_segments_collection_input(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
855 |
cctx = zstd.ZstdCompressor(write_content_size=True, write_checksum=True) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
856 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
857 |
original = [ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
858 |
b'foo1', |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
859 |
b'foo2' * 2, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
860 |
b'foo3' * 3, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
861 |
b'foo4' * 4, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
862 |
b'foo5' * 5, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
863 |
] |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
864 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
865 |
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
|
866 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
867 |
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
|
868 |
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
|
869 |
0, len(original[0]), |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
870 |
len(original[0]), len(original[1]))) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
871 |
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
|
872 |
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
|
873 |
0, len(original[2]), |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
874 |
len(original[2]), len(original[3]), |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
875 |
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
|
876 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
877 |
c = zstd.BufferWithSegmentsCollection(b1, b2) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
878 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
879 |
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
|
880 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
881 |
self.assertEqual(len(result), len(frames)) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
882 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
883 |
for i, frame in enumerate(frames): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
884 |
self.assertEqual(result[i].tobytes(), frame) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
885 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
886 |
def test_multiple_threads(self): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
887 |
# 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
|
888 |
# make output different. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
889 |
refcctx = zstd.ZstdCompressor(write_content_size=True, write_checksum=True) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
890 |
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
|
891 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
892 |
cctx = zstd.ZstdCompressor(write_content_size=True, write_checksum=True) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
893 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
894 |
frames = [] |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
895 |
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
|
896 |
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
|
897 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
898 |
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
|
899 |
|
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
900 |
self.assertEqual(len(result), 512) |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
901 |
for i in range(512): |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
902 |
if i < 256: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
903 |
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
|
904 |
else: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
905 |
self.assertEqual(result[i].tobytes(), reference[1]) |