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annotate tests/test-remotefilelog-datapack.py @ 41472:6309ce86fa82

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tests: use items() in test-remotefilelog-datapack.py Performance doesn't matter in tests. iteritems() doesn't exist in Python 3. Differential Revision: https://phab.mercurial-scm.org/D5757
author Gregory Szorc <gregory.szorc@gmail.com>
date Wed, 30 Jan 2019 13:22:42 -0800
parents 268325697a47
children 90b3898cf0db
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python
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2 from __future__ import absolute_import, print_function
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3
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4 import hashlib
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5 import os
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6 import random
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7 import shutil
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8 import stat
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9 import struct
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10 import sys
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11 import tempfile
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12 import time
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13 import unittest
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14
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15 import silenttestrunner
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16
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17 # Load the local remotefilelog, not the system one
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18 sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]
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19 from mercurial.node import nullid
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20 from mercurial import (
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21 pycompat,
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22 ui as uimod,
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23 )
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24 from hgext.remotefilelog import (
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25 basepack,
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26 constants,
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27 datapack,
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28 )
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29
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30 class datapacktestsbase(object):
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31 def __init__(self, datapackreader, paramsavailable):
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32 self.datapackreader = datapackreader
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33 self.paramsavailable = paramsavailable
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34
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35 def setUp(self):
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36 self.tempdirs = []
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37
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38 def tearDown(self):
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39 for d in self.tempdirs:
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40 shutil.rmtree(d)
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41
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42 def makeTempDir(self):
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43 tempdir = tempfile.mkdtemp()
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44 self.tempdirs.append(tempdir)
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45 return tempdir
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46
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47 def getHash(self, content):
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48 return hashlib.sha1(content).digest()
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49
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50 def getFakeHash(self):
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51 return ''.join(chr(random.randint(0, 255)) for _ in range(20))
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52
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53 def createPack(self, revisions=None, packdir=None):
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54 if revisions is None:
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55 revisions = [(b"filename", self.getFakeHash(), nullid, b"content")]
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56
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57 if packdir is None:
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58 packdir = self.makeTempDir()
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59
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60 packer = datapack.mutabledatapack(uimod.ui(), packdir, version=2)
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61
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62 for args in revisions:
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63 filename, node, base, content = args[0:4]
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64 # meta is optional
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65 meta = None
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66 if len(args) > 4:
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67 meta = args[4]
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68 packer.add(filename, node, base, content, metadata=meta)
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69
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70 path = packer.close()
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71 return self.datapackreader(path)
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72
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73 def _testAddSingle(self, content):
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74 """Test putting a simple blob into a pack and reading it out.
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75 """
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76 filename = b"foo"
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77 node = self.getHash(content)
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78
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79 revisions = [(filename, node, nullid, content)]
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80 pack = self.createPack(revisions)
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81 if self.paramsavailable:
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82 self.assertEqual(pack.params.fanoutprefix,
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83 basepack.SMALLFANOUTPREFIX)
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84
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85 chain = pack.getdeltachain(filename, node)
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86 self.assertEqual(content, chain[0][4])
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87
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88 def testAddSingle(self):
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89 self._testAddSingle(b'')
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90
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91 def testAddSingleEmpty(self):
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92 self._testAddSingle(b'abcdef')
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93
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94 def testAddMultiple(self):
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95 """Test putting multiple unrelated blobs into a pack and reading them
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96 out.
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97 """
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98 revisions = []
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99 for i in range(10):
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100 filename = b"foo%d" % i
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101 content = b"abcdef%d" % i
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102 node = self.getHash(content)
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103 revisions.append((filename, node, self.getFakeHash(), content))
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104
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105 pack = self.createPack(revisions)
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106
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107 for filename, node, base, content in revisions:
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108 entry = pack.getdelta(filename, node)
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109 self.assertEqual((content, filename, base, {}), entry)
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110
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111 chain = pack.getdeltachain(filename, node)
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112 self.assertEqual(content, chain[0][4])
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113
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114 def testAddDeltas(self):
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115 """Test putting multiple delta blobs into a pack and read the chain.
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116 """
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117 revisions = []
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118 filename = b"foo"
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119 lastnode = nullid
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120 for i in range(10):
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121 content = b"abcdef%d" % i
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122 node = self.getHash(content)
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123 revisions.append((filename, node, lastnode, content))
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124 lastnode = node
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125
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126 pack = self.createPack(revisions)
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127
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128 entry = pack.getdelta(filename, revisions[0][1])
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129 realvalue = (revisions[0][3], filename, revisions[0][2], {})
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130 self.assertEqual(entry, realvalue)
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131
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132 # Test that the chain for the final entry has all the others
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133 chain = pack.getdeltachain(filename, node)
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134 for i in range(10):
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135 content = b"abcdef%d" % i
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136 self.assertEqual(content, chain[-i - 1][4])
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137
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138 def testPackMany(self):
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139 """Pack many related and unrelated objects.
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140 """
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141 # Build a random pack file
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142 revisions = []
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143 blobs = {}
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144 random.seed(0)
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145 for i in range(100):
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146 filename = b"filename-%d" % i
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147 filerevs = []
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148 for j in range(random.randint(1, 100)):
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149 content = b"content-%d" % j
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150 node = self.getHash(content)
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151 lastnode = nullid
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152 if len(filerevs) > 0:
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153 lastnode = filerevs[random.randint(0, len(filerevs) - 1)]
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154 filerevs.append(node)
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155 blobs[(filename, node, lastnode)] = content
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156 revisions.append((filename, node, lastnode, content))
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157
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158 pack = self.createPack(revisions)
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159
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160 # Verify the pack contents
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161 for (filename, node, lastnode), content in sorted(blobs.items()):
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162 chain = pack.getdeltachain(filename, node)
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163 for entry in chain:
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164 expectedcontent = blobs[(entry[0], entry[1], entry[3])]
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165 self.assertEqual(entry[4], expectedcontent)
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166
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167 def testPackMetadata(self):
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168 revisions = []
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169 for i in range(100):
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170 filename = b'%d.txt' % i
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171 content = b'put-something-here \n' * i
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172 node = self.getHash(content)
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173 meta = {constants.METAKEYFLAG: i ** 4,
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174 constants.METAKEYSIZE: len(content),
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175 b'Z': b'random_string',
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176 b'_': b'\0' * i}
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177 revisions.append((filename, node, nullid, content, meta))
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178 pack = self.createPack(revisions)
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179 for name, node, x, content, origmeta in revisions:
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180 parsedmeta = pack.getmeta(name, node)
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181 # flag == 0 should be optimized out
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182 if origmeta[constants.METAKEYFLAG] == 0:
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183 del origmeta[constants.METAKEYFLAG]
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184 self.assertEqual(parsedmeta, origmeta)
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185
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186 def testGetMissing(self):
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187 """Test the getmissing() api.
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188 """
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189 revisions = []
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190 filename = b"foo"
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191 lastnode = nullid
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192 for i in range(10):
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193 content = b"abcdef%d" % i
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194 node = self.getHash(content)
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195 revisions.append((filename, node, lastnode, content))
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196 lastnode = node
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197
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198 pack = self.createPack(revisions)
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199
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200 missing = pack.getmissing([(b"foo", revisions[0][1])])
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201 self.assertFalse(missing)
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202
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203 missing = pack.getmissing([(b"foo", revisions[0][1]),
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204 (b"foo", revisions[1][1])])
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diff changeset
205 self.assertFalse(missing)
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206
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diff changeset
207 fakenode = self.getFakeHash()
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208 missing = pack.getmissing([(b"foo", revisions[0][1]),
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diff changeset
209 (b"foo", fakenode)])
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210 self.assertEqual(missing, [(b"foo", fakenode)])
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211
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diff changeset
212 def testAddThrows(self):
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diff changeset
213 pack = self.createPack()
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214
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diff changeset
215 try:
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216 pack.add(b'filename', nullid, b'contents')
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diff changeset
217 self.assertTrue(False, "datapack.add should throw")
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218 except RuntimeError:
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219 pass
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220
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diff changeset
221 def testBadVersionThrows(self):
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diff changeset
222 pack = self.createPack()
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diff changeset
223 path = pack.path + b'.datapack'
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diff changeset
224 with open(path) as f:
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diff changeset
225 raw = f.read()
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diff changeset
226 raw = struct.pack('!B', 255) + raw[1:]
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diff changeset
227 os.chmod(path, os.stat(path).st_mode | stat.S_IWRITE)
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diff changeset
228 with open(path, 'w+') as f:
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diff changeset
229 f.write(raw)
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230
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231 try:
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diff changeset
232 pack = self.datapackreader(pack.path)
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diff changeset
233 self.assertTrue(False, "bad version number should have thrown")
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diff changeset
234 except RuntimeError:
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235 pass
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diff changeset
236
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diff changeset
237 def testMissingDeltabase(self):
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diff changeset
238 fakenode = self.getFakeHash()
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239 revisions = [(b"filename", fakenode, self.getFakeHash(), b"content")]
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diff changeset
240 pack = self.createPack(revisions)
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diff changeset
241 chain = pack.getdeltachain(b"filename", fakenode)
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diff changeset
242 self.assertEqual(len(chain), 1)
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243
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244 def testLargePack(self):
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245 """Test creating and reading from a large pack with over X entries.
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246 This causes it to use a 2^16 fanout table instead."""
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247 revisions = []
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248 blobs = {}
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249 total = basepack.SMALLFANOUTCUTOFF + 1
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250 for i in pycompat.xrange(total):
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251 filename = b"filename-%d" % i
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252 content = filename
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253 node = self.getHash(content)
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254 blobs[(filename, node)] = content
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255 revisions.append((filename, node, nullid, content))
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256
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257 pack = self.createPack(revisions)
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258 if self.paramsavailable:
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259 self.assertEqual(pack.params.fanoutprefix,
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260 basepack.LARGEFANOUTPREFIX)
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261
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262 for (filename, node), content in blobs.items():
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263 actualcontent = pack.getdeltachain(filename, node)[0][4]
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264 self.assertEqual(actualcontent, content)
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265
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266 def testPacksCache(self):
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267 """Test that we remember the most recent packs while fetching the delta
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268 chain."""
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269
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270 packdir = self.makeTempDir()
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271 deltachains = []
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272
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273 numpacks = 10
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274 revisionsperpack = 100
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275
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276 for i in range(numpacks):
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277 chain = []
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278 revision = (b'%d' % i, self.getFakeHash(), nullid, b"content")
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279
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280 for _ in range(revisionsperpack):
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281 chain.append(revision)
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282 revision = (
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283 b'%d' % i,
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284 self.getFakeHash(),
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285 revision[1],
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286 self.getFakeHash()
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287 )
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288
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289 self.createPack(chain, packdir)
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290 deltachains.append(chain)
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291
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292 class testdatapackstore(datapack.datapackstore):
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293 # Ensures that we are not keeping everything in the cache.
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294 DEFAULTCACHESIZE = numpacks / 2
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295
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296 store = testdatapackstore(uimod.ui(), packdir)
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297
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298 random.shuffle(deltachains)
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299 for randomchain in deltachains:
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300 revision = random.choice(randomchain)
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301 chain = store.getdeltachain(revision[0], revision[1])
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302
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303 mostrecentpack = next(iter(store.packs), None)
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304 self.assertEqual(
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305 mostrecentpack.getdeltachain(revision[0], revision[1]),
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306 chain
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307 )
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308
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309 self.assertEqual(randomchain.index(revision) + 1, len(chain))
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310
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311 # perf test off by default since it's slow
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312 def _testIndexPerf(self):
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313 random.seed(0)
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314 print("Multi-get perf test")
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315 packsizes = [
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316 100,
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317 10000,
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318 100000,
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319 500000,
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320 1000000,
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321 3000000,
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322 ]
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323 lookupsizes = [
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324 10,
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325 100,
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326 1000,
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327 10000,
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328 100000,
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329 1000000,
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330 ]
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331 for packsize in packsizes:
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diff changeset
332 revisions = []
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333 for i in pycompat.xrange(packsize):
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334 filename = b"filename-%d" % i
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335 content = b"content-%d" % i
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336 node = self.getHash(content)
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337 revisions.append((filename, node, nullid, content))
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338
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339 path = self.createPack(revisions).path
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340
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341 # Perf of large multi-get
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342 import gc
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343 gc.disable()
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344 pack = self.datapackreader(path)
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diff changeset
345 for lookupsize in lookupsizes:
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346 if lookupsize > packsize:
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347 continue
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348 random.shuffle(revisions)
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349 findnodes = [(rev[0], rev[1]) for rev in revisions]
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350
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351 start = time.time()
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diff changeset
352 pack.getmissing(findnodes[:lookupsize])
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diff changeset
353 elapsed = time.time() - start
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354 print ("%s pack %d lookups = %0.04f" %
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355 (('%d' % packsize).rjust(7),
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356 ('%d' % lookupsize).rjust(7),
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357 elapsed))
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358
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359 print("")
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360 gc.enable()
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361
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362 # The perf test is meant to produce output, so we always fail the test
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363 # so the user sees the output.
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364 raise RuntimeError("perf test always fails")
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365
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366 class datapacktests(datapacktestsbase, unittest.TestCase):
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367 def __init__(self, *args, **kwargs):
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368 datapacktestsbase.__init__(self, datapack.datapack, True)
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369 unittest.TestCase.__init__(self, *args, **kwargs)
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370
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371 # TODO:
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372 # datapack store:
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373 # - getmissing
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374 # - GC two packs into one
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375
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376 if __name__ == '__main__':
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377 if pycompat.iswindows:
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378 sys.exit(80) # Skip on Windows
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379 silenttestrunner.main(__name__)