Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_hashlib.py @ 78069:a8aa77458e12 3.2

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Add c_size_t and c_ssize_t to the ctypes summary table.
author Antoine Pitrou <solipsis@pitrou.net>
date Thu, 12 Jul 2012 20:31:50 +0200
parents bf39434dd506
children c97cfe04880f 0a1d7be10946
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # Test hashlib module
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2 #
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3 # $Id$
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4 #
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5 # Copyright (C) 2005-2010 Gregory P. Smith (greg@krypto.org)
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6 # Licensed to PSF under a Contributor Agreement.
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7 #
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8
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9 import array
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10 import hashlib
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11 import itertools
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12 import sys
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13 try:
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14 import threading
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15 except ImportError:
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16 threading = None
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17 import unittest
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18 import warnings
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19 from test import support
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20 from test.support import _4G, bigmemtest
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21
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22 # Were we compiled --with-pydebug or with #define Py_DEBUG?
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23 COMPILED_WITH_PYDEBUG = hasattr(sys, 'gettotalrefcount')
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24
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25
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26 def hexstr(s):
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27 assert isinstance(s, bytes), repr(s)
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28 h = "0123456789abcdef"
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29 r = ''
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30 for i in s:
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31 r += h[(i >> 4) & 0xF] + h[i & 0xF]
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32 return r
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33
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34
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35 class HashLibTestCase(unittest.TestCase):
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36 supported_hash_names = ( 'md5', 'MD5', 'sha1', 'SHA1',
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37 'sha224', 'SHA224', 'sha256', 'SHA256',
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38 'sha384', 'SHA384', 'sha512', 'SHA512' )
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39
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40 _warn_on_extension_import = COMPILED_WITH_PYDEBUG
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41
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42 def _conditional_import_module(self, module_name):
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43 """Import a module and return a reference to it or None on failure."""
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44 try:
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45 exec('import '+module_name)
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46 except ImportError as error:
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47 if self._warn_on_extension_import:
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48 warnings.warn('Did a C extension fail to compile? %s' % error)
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49 return locals().get(module_name)
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50
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51 def __init__(self, *args, **kwargs):
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52 algorithms = set()
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53 for algorithm in self.supported_hash_names:
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54 algorithms.add(algorithm.lower())
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55 self.constructors_to_test = {}
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56 for algorithm in algorithms:
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57 self.constructors_to_test[algorithm] = set()
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58
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59 # For each algorithm, test the direct constructor and the use
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60 # of hashlib.new given the algorithm name.
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61 for algorithm, constructors in self.constructors_to_test.items():
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62 constructors.add(getattr(hashlib, algorithm))
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63 def _test_algorithm_via_hashlib_new(data=None, _alg=algorithm):
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64 if data is None:
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65 return hashlib.new(_alg)
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66 return hashlib.new(_alg, data)
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67 constructors.add(_test_algorithm_via_hashlib_new)
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68
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69 _hashlib = self._conditional_import_module('_hashlib')
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70 if _hashlib:
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71 # These two algorithms should always be present when this module
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72 # is compiled. If not, something was compiled wrong.
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73 assert hasattr(_hashlib, 'openssl_md5')
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74 assert hasattr(_hashlib, 'openssl_sha1')
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75 for algorithm, constructors in self.constructors_to_test.items():
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76 constructor = getattr(_hashlib, 'openssl_'+algorithm, None)
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77 if constructor:
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78 constructors.add(constructor)
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79
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80 _md5 = self._conditional_import_module('_md5')
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81 if _md5:
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82 self.constructors_to_test['md5'].add(_md5.md5)
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83 _sha1 = self._conditional_import_module('_sha1')
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84 if _sha1:
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85 self.constructors_to_test['sha1'].add(_sha1.sha1)
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86 _sha256 = self._conditional_import_module('_sha256')
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87 if _sha256:
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88 self.constructors_to_test['sha224'].add(_sha256.sha224)
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89 self.constructors_to_test['sha256'].add(_sha256.sha256)
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90 _sha512 = self._conditional_import_module('_sha512')
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91 if _sha512:
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92 self.constructors_to_test['sha384'].add(_sha512.sha384)
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93 self.constructors_to_test['sha512'].add(_sha512.sha512)
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94
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95 super(HashLibTestCase, self).__init__(*args, **kwargs)
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96
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97 def test_hash_array(self):
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98 a = array.array("b", range(10))
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99 constructors = self.constructors_to_test.values()
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100 for cons in itertools.chain.from_iterable(constructors):
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101 c = cons(a)
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102 c.hexdigest()
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103
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104 def test_algorithms_guaranteed(self):
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105 self.assertEqual(hashlib.algorithms_guaranteed,
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106 set(_algo for _algo in self.supported_hash_names
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107 if _algo.islower()))
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108
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109 def test_algorithms_available(self):
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110 self.assertTrue(set(hashlib.algorithms_guaranteed).
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111 issubset(hashlib.algorithms_available))
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112
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113 def test_unknown_hash(self):
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114 try:
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115 hashlib.new('spam spam spam spam spam')
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116 except ValueError:
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117 pass
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118 else:
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119 self.assertTrue(0 == "hashlib didn't reject bogus hash name")
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120
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121 def test_get_builtin_constructor(self):
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122 get_builtin_constructor = hashlib.__dict__[
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123 '__get_builtin_constructor']
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124 self.assertRaises(ValueError, get_builtin_constructor, 'test')
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125 try:
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126 import _md5
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127 except ImportError:
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128 pass
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129 # This forces an ImportError for "import _md5" statements
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130 sys.modules['_md5'] = None
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131 try:
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132 self.assertRaises(ValueError, get_builtin_constructor, 'md5')
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133 finally:
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134 if '_md5' in locals():
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135 sys.modules['_md5'] = _md5
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136 else:
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137 del sys.modules['_md5']
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138
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139 def test_hexdigest(self):
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140 for name in self.supported_hash_names:
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141 h = hashlib.new(name)
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142 assert isinstance(h.digest(), bytes), name
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143 self.assertEqual(hexstr(h.digest()), h.hexdigest())
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144
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145
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146 def test_large_update(self):
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147 aas = b'a' * 128
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148 bees = b'b' * 127
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149 cees = b'c' * 126
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150
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151 for name in self.supported_hash_names:
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152 m1 = hashlib.new(name)
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153 m1.update(aas)
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154 m1.update(bees)
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155 m1.update(cees)
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156
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157 m2 = hashlib.new(name)
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158 m2.update(aas + bees + cees)
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159 self.assertEqual(m1.digest(), m2.digest())
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160
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161 def check(self, name, data, digest):
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162 constructors = self.constructors_to_test[name]
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163 # 2 is for hashlib.name(...) and hashlib.new(name, ...)
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164 self.assertGreaterEqual(len(constructors), 2)
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165 for hash_object_constructor in constructors:
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166 computed = hash_object_constructor(data).hexdigest()
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167 self.assertEqual(
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168 computed, digest,
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169 "Hash algorithm %s constructed using %s returned hexdigest"
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170 " %r for %d byte input data that should have hashed to %r."
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171 % (name, hash_object_constructor,
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172 computed, len(data), digest))
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173
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174 def check_no_unicode(self, algorithm_name):
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175 # Unicode objects are not allowed as input.
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176 constructors = self.constructors_to_test[algorithm_name]
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177 for hash_object_constructor in constructors:
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178 self.assertRaises(TypeError, hash_object_constructor, 'spam')
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179
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180 def test_no_unicode(self):
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181 self.check_no_unicode('md5')
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182 self.check_no_unicode('sha1')
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183 self.check_no_unicode('sha224')
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184 self.check_no_unicode('sha256')
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185 self.check_no_unicode('sha384')
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186 self.check_no_unicode('sha512')
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187
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188 def test_case_md5_0(self):
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189 self.check('md5', b'', 'd41d8cd98f00b204e9800998ecf8427e')
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190
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191 def test_case_md5_1(self):
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192 self.check('md5', b'abc', '900150983cd24fb0d6963f7d28e17f72')
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193
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194 def test_case_md5_2(self):
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195 self.check('md5',
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196 b'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',
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197 'd174ab98d277d9f5a5611c2c9f419d9f')
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198
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199 @bigmemtest(size=_4G + 5, memuse=1)
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200 def test_case_md5_huge(self, size):
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201 if size == _4G + 5:
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202 try:
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203 self.check('md5', b'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d')
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204 except OverflowError:
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205 pass # 32-bit arch
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206
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207 @bigmemtest(size=_4G - 1, memuse=1)
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208 def test_case_md5_uintmax(self, size):
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209 if size == _4G - 1:
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210 try:
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211 self.check('md5', b'A'*size, '28138d306ff1b8281f1a9067e1a1a2b3')
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212 except OverflowError:
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213 pass # 32-bit arch
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214
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215 # use the three examples from Federal Information Processing Standards
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216 # Publication 180-1, Secure Hash Standard, 1995 April 17
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217 # http://www.itl.nist.gov/div897/pubs/fip180-1.htm
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218
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219 def test_case_sha1_0(self):
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220 self.check('sha1', b"",
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221 "da39a3ee5e6b4b0d3255bfef95601890afd80709")
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222
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223 def test_case_sha1_1(self):
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224 self.check('sha1', b"abc",
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225 "a9993e364706816aba3e25717850c26c9cd0d89d")
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226
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227 def test_case_sha1_2(self):
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228 self.check('sha1',
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229 b"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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230 "84983e441c3bd26ebaae4aa1f95129e5e54670f1")
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231
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232 def test_case_sha1_3(self):
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233 self.check('sha1', b"a" * 1000000,
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234 "34aa973cd4c4daa4f61eeb2bdbad27316534016f")
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235
624918e1c1b2 [ sf.net patch # 1121611 ]
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236
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237 # use the examples from Federal Information Processing Standards
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238 # Publication 180-2, Secure Hash Standard, 2002 August 1
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239 # http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
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240
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241 def test_case_sha224_0(self):
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242 self.check('sha224', b"",
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243 "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f")
624918e1c1b2 [ sf.net patch # 1121611 ]
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244
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245 def test_case_sha224_1(self):
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246 self.check('sha224', b"abc",
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247 "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7")
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248
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249 def test_case_sha224_2(self):
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250 self.check('sha224',
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251 b"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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252 "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525")
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253
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254 def test_case_sha224_3(self):
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255 self.check('sha224', b"a" * 1000000,
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256 "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67")
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257
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258
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259 def test_case_sha256_0(self):
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260 self.check('sha256', b"",
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261 "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
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262
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263 def test_case_sha256_1(self):
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264 self.check('sha256', b"abc",
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265 "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")
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266
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267 def test_case_sha256_2(self):
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268 self.check('sha256',
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269 b"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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270 "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1")
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271
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272 def test_case_sha256_3(self):
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273 self.check('sha256', b"a" * 1000000,
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274 "cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0")
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275
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276
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277 def test_case_sha384_0(self):
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278 self.check('sha384', b"",
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279 "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da"+
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280 "274edebfe76f65fbd51ad2f14898b95b")
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281
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282 def test_case_sha384_1(self):
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283 self.check('sha384', b"abc",
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284 "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"+
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285 "8086072ba1e7cc2358baeca134c825a7")
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286
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287 def test_case_sha384_2(self):
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288 self.check('sha384',
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289 b"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+
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290 b"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
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291 "09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"+
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292 "fcc7c71a557e2db966c3e9fa91746039")
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293
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294 def test_case_sha384_3(self):
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295 self.check('sha384', b"a" * 1000000,
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296 "9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"+
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297 "07b8b3dc38ecc4ebae97ddd87f3d8985")
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298
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299
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300 def test_case_sha512_0(self):
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301 self.check('sha512', b"",
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302 "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce"+
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303 "47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e")
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304
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305 def test_case_sha512_1(self):
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306 self.check('sha512', b"abc",
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307 "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"+
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308 "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f")
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309
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310 def test_case_sha512_2(self):
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311 self.check('sha512',
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312 b"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+
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313 b"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
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314 "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"+
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315 "501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909")
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316
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317 def test_case_sha512_3(self):
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318 self.check('sha512', b"a" * 1000000,
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319 "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"+
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320 "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b")
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321
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322 def test_gil(self):
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323 # Check things work fine with an input larger than the size required
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324 # for multithreaded operation (which is hardwired to 2048).
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325 gil_minsize = 2048
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326
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327 m = hashlib.md5()
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328 m.update(b'1')
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329 m.update(b'#' * gil_minsize)
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330 m.update(b'1')
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331 self.assertEqual(m.hexdigest(), 'cb1e1a2cbc80be75e19935d621fb9b21')
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332
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333 m = hashlib.md5(b'x' * gil_minsize)
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334 self.assertEqual(m.hexdigest(), 'cfb767f225d58469c5de3632a8803958')
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335
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336 @unittest.skipUnless(threading, 'Threading required for this test.')
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337 @support.reap_threads
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338 def test_threaded_hashing(self):
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339 # Updating the same hash object from several threads at once
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340 # using data chunk sizes containing the same byte sequences.
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341 #
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342 # If the internal locks are working to prevent multiple
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343 # updates on the same object from running at once, the resulting
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344 # hash will be the same as doing it single threaded upfront.
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345 hasher = hashlib.sha1()
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346 num_threads = 5
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347 smallest_data = b'swineflu'
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348 data = smallest_data*200000
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349 expected_hash = hashlib.sha1(data*num_threads).hexdigest()
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350
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351 def hash_in_chunks(chunk_size, event):
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352 index = 0
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353 while index < len(data):
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354 hasher.update(data[index:index+chunk_size])
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355 index += chunk_size
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356 event.set()
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357
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358 events = []
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359 for threadnum in range(num_threads):
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360 chunk_size = len(data) // (10**threadnum)
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361 assert chunk_size > 0
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362 assert chunk_size % len(smallest_data) == 0
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363 event = threading.Event()
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364 events.append(event)
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365 threading.Thread(target=hash_in_chunks,
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366 args=(chunk_size, event)).start()
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367
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368 for event in events:
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369 event.wait()
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370
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371 self.assertEqual(expected_hash, hasher.hexdigest())
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372
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373 def test_main():
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374 support.run_unittest(HashLibTestCase)
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375
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376 if __name__ == "__main__":
624918e1c1b2 [ sf.net patch # 1121611 ]
Gregory P. Smith <greg@mad-scientist.com>
parents:
diff changeset
377 test_main()