Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_platform.py @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 10a261824b62
children
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rev   line source
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1 import os
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2 import platform
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3 import subprocess
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4 import sys
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5 import unittest
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6 import warnings
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7
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8 from test import support
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9
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10 class PlatformTest(unittest.TestCase):
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11 def test_architecture(self):
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12 res = platform.architecture()
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13
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14 @support.skip_unless_symlink
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15 def test_architecture_via_symlink(self): # issue3762
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16 # On Windows, the EXE needs to know where pythonXY.dll is at so we have
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17 # to add the directory to the path.
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18 if sys.platform == "win32":
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19 os.environ["Path"] = "{};{}".format(
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20 os.path.dirname(sys.executable), os.environ["Path"])
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21
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22 def get(python):
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23 cmd = [python, '-c',
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24 'import platform; print(platform.architecture())']
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25 p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
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26 return p.communicate()
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27 real = os.path.realpath(sys.executable)
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28 link = os.path.abspath(support.TESTFN)
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29 os.symlink(real, link)
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30 try:
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31 self.assertEqual(get(real), get(link))
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32 finally:
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33 os.remove(link)
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34
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35 def test_platform(self):
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36 for aliased in (False, True):
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37 for terse in (False, True):
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38 res = platform.platform(aliased, terse)
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39
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40 def test_system(self):
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41 res = platform.system()
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42
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43 def test_node(self):
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44 res = platform.node()
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45
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46 def test_release(self):
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47 res = platform.release()
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48
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49 def test_version(self):
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50 res = platform.version()
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51
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52 def test_machine(self):
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53 res = platform.machine()
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54
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55 def test_processor(self):
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56 res = platform.processor()
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57
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58 def setUp(self):
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59 self.save_version = sys.version
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60 self.save_mercurial = sys._mercurial
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61 self.save_platform = sys.platform
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63 def tearDown(self):
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64 sys.version = self.save_version
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65 sys._mercurial = self.save_mercurial
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66 sys.platform = self.save_platform
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67
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68 def test_sys_version(self):
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69 # Old test.
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70 for input, output in (
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71 ('2.4.3 (#1, Jun 21 2006, 13:54:21) \n[GCC 3.3.4 (pre 3.3.5 20040809)]',
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72 ('CPython', '2.4.3', '', '', '1', 'Jun 21 2006 13:54:21', 'GCC 3.3.4 (pre 3.3.5 20040809)')),
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73 ('IronPython 1.0.60816 on .NET 2.0.50727.42',
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74 ('IronPython', '1.0.60816', '', '', '', '', '.NET 2.0.50727.42')),
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75 ('IronPython 1.0 (1.0.61005.1977) on .NET 2.0.50727.42',
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76 ('IronPython', '1.0.0', '', '', '', '', '.NET 2.0.50727.42')),
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77 ):
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78 # branch and revision are not "parsed", but fetched
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79 # from sys._mercurial. Ignore them
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80 (name, version, branch, revision, buildno, builddate, compiler) \
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81 = platform._sys_version(input)
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82 self.assertEqual(
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83 (name, version, '', '', buildno, builddate, compiler), output)
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84
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85 # Tests for python_implementation(), python_version(), python_branch(),
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86 # python_revision(), python_build(), and python_compiler().
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87 sys_versions = {
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88 ("2.6.1 (r261:67515, Dec 6 2008, 15:26:00) \n[GCC 4.0.1 (Apple Computer, Inc. build 5370)]",
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89 ('CPython', 'tags/r261', '67515'), self.save_platform)
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90 :
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91 ("CPython", "2.6.1", "tags/r261", "67515",
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92 ('r261:67515', 'Dec 6 2008 15:26:00'),
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93 'GCC 4.0.1 (Apple Computer, Inc. build 5370)'),
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95 ("IronPython 2.0 (2.0.0.0) on .NET 2.0.50727.3053", None, "cli")
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96 :
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97 ("IronPython", "2.0.0", "", "", ("", ""),
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98 ".NET 2.0.50727.3053"),
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99
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100 ("2.6.1 (IronPython 2.6.1 (2.6.10920.0) on .NET 2.0.50727.1433)", None, "cli")
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101 :
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102 ("IronPython", "2.6.1", "", "", ("", ""),
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103 ".NET 2.0.50727.1433"),
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104
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105 ("2.7.4 (IronPython 2.7.4 (2.7.0.40) on Mono 4.0.30319.1 (32-bit))", None, "cli")
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106 :
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107 ("IronPython", "2.7.4", "", "", ("", ""),
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108 "Mono 4.0.30319.1 (32-bit)"),
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110 ("2.5 (trunk:6107, Mar 26 2009, 13:02:18) \n[Java HotSpot(TM) Client VM (\"Apple Computer, Inc.\")]",
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111 ('Jython', 'trunk', '6107'), "java1.5.0_16")
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112 :
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113 ("Jython", "2.5.0", "trunk", "6107",
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114 ('trunk:6107', 'Mar 26 2009'), "java1.5.0_16"),
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115
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116 ("2.5.2 (63378, Mar 26 2009, 18:03:29)\n[PyPy 1.0.0]",
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117 ('PyPy', 'trunk', '63378'), self.save_platform)
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118 :
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119 ("PyPy", "2.5.2", "trunk", "63378", ('63378', 'Mar 26 2009'),
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120 "")
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121 }
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122 for (version_tag, subversion, sys_platform), info in \
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123 sys_versions.items():
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124 sys.version = version_tag
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125 if subversion is None:
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126 if hasattr(sys, "_mercurial"):
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127 del sys._mercurial
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128 else:
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129 sys._mercurial = subversion
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130 if sys_platform is not None:
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131 sys.platform = sys_platform
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132 self.assertEqual(platform.python_implementation(), info[0])
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133 self.assertEqual(platform.python_version(), info[1])
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134 self.assertEqual(platform.python_branch(), info[2])
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135 self.assertEqual(platform.python_revision(), info[3])
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136 self.assertEqual(platform.python_build(), info[4])
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137 self.assertEqual(platform.python_compiler(), info[5])
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138
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139 def test_system_alias(self):
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140 res = platform.system_alias(
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141 platform.system(),
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142 platform.release(),
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143 platform.version(),
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144 )
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145
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146 def test_uname(self):
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147 res = platform.uname()
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148 self.assertTrue(any(res))
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149 self.assertEqual(res[0], res.system)
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150 self.assertEqual(res[1], res.node)
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151 self.assertEqual(res[2], res.release)
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152 self.assertEqual(res[3], res.version)
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153 self.assertEqual(res[4], res.machine)
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154 self.assertEqual(res[5], res.processor)
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155
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156 @unittest.skipUnless(sys.platform.startswith('win'), "windows only test")
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157 def test_uname_win32_ARCHITEW6432(self):
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158 # Issue 7860: make sure we get architecture from the correct variable
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159 # on 64 bit Windows: if PROCESSOR_ARCHITEW6432 exists we should be
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160 # using it, per
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161 # http://blogs.msdn.com/david.wang/archive/2006/03/26/HOWTO-Detect-Process-Bitness.aspx
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162 try:
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163 with support.EnvironmentVarGuard() as environ:
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164 if 'PROCESSOR_ARCHITEW6432' in environ:
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165 del environ['PROCESSOR_ARCHITEW6432']
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166 environ['PROCESSOR_ARCHITECTURE'] = 'foo'
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167 platform._uname_cache = None
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168 system, node, release, version, machine, processor = platform.uname()
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169 self.assertEqual(machine, 'foo')
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170 environ['PROCESSOR_ARCHITEW6432'] = 'bar'
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171 platform._uname_cache = None
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172 system, node, release, version, machine, processor = platform.uname()
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173 self.assertEqual(machine, 'bar')
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174 finally:
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175 platform._uname_cache = None
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176
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177 def test_java_ver(self):
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178 res = platform.java_ver()
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179 if sys.platform == 'java':
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180 self.assertTrue(all(res))
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181
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182 def test_win32_ver(self):
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183 res = platform.win32_ver()
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184
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185 def test_mac_ver(self):
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186 res = platform.mac_ver()
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187
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188 if platform.uname().system == 'Darwin':
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189 # We're on a MacOSX system, check that
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190 # the right version information is returned
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191 fd = os.popen('sw_vers', 'r')
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192 real_ver = None
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193 for ln in fd:
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194 if ln.startswith('ProductVersion:'):
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195 real_ver = ln.strip().split()[-1]
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196 break
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197 fd.close()
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198 self.assertFalse(real_ver is None)
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199 result_list = res[0].split('.')
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200 expect_list = real_ver.split('.')
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201 len_diff = len(result_list) - len(expect_list)
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202 # On Snow Leopard, sw_vers reports 10.6.0 as 10.6
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203 if len_diff > 0:
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204 expect_list.extend(['0'] * len_diff)
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205 self.assertEqual(result_list, expect_list)
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206
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207 # res[1] claims to contain
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208 # (version, dev_stage, non_release_version)
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209 # That information is no longer available
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210 self.assertEqual(res[1], ('', '', ''))
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211
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212 if sys.byteorder == 'little':
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213 self.assertIn(res[2], ('i386', 'x86_64'))
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214 else:
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215 self.assertEqual(res[2], 'PowerPC')
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216
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217
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218 @unittest.skipUnless(sys.platform == 'darwin', "OSX only test")
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219 def test_mac_ver_with_fork(self):
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220 # Issue7895: platform.mac_ver() crashes when using fork without exec
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221 #
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222 # This test checks that the fix for that issue works.
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223 #
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224 pid = os.fork()
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225 if pid == 0:
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226 # child
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227 info = platform.mac_ver()
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228 os._exit(0)
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229
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230 else:
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231 # parent
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232 cpid, sts = os.waitpid(pid, 0)
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233 self.assertEqual(cpid, pid)
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234 self.assertEqual(sts, 0)
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235
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236 def test_dist(self):
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237 res = platform.dist()
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238
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239 def test_libc_ver(self):
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240 import os
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241 if os.path.isdir(sys.executable) and \
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242 os.path.exists(sys.executable+'.exe'):
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243 # Cygwin horror
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244 executable = sys.executable + '.exe'
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245 else:
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246 executable = sys.executable
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247 res = platform.libc_ver(executable)
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248
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249 def test_parse_release_file(self):
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250
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251 for input, output in (
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252 # Examples of release file contents:
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253 ('SuSE Linux 9.3 (x86-64)', ('SuSE Linux ', '9.3', 'x86-64')),
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254 ('SUSE LINUX 10.1 (X86-64)', ('SUSE LINUX ', '10.1', 'X86-64')),
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255 ('SUSE LINUX 10.1 (i586)', ('SUSE LINUX ', '10.1', 'i586')),
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256 ('Fedora Core release 5 (Bordeaux)', ('Fedora Core', '5', 'Bordeaux')),
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257 ('Red Hat Linux release 8.0 (Psyche)', ('Red Hat Linux', '8.0', 'Psyche')),
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258 ('Red Hat Linux release 9 (Shrike)', ('Red Hat Linux', '9', 'Shrike')),
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259 ('Red Hat Enterprise Linux release 4 (Nahant)', ('Red Hat Enterprise Linux', '4', 'Nahant')),
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260 ('CentOS release 4', ('CentOS', '4', None)),
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261 ('Rocks release 4.2.1 (Cydonia)', ('Rocks', '4.2.1', 'Cydonia')),
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262 ('', ('', '', '')), # If there's nothing there.
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263 ):
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264 self.assertEqual(platform._parse_release_file(input), output)
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265
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266 def test_popen(self):
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267 mswindows = (sys.platform == "win32")
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268
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269 if mswindows:
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270 command = '"{}" -c "print(\'Hello\')"'.format(sys.executable)
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271 else:
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272 command = "'{}' -c 'print(\"Hello\")'".format(sys.executable)
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273 with warnings.catch_warnings():
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274 warnings.simplefilter("ignore", DeprecationWarning)
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275 with platform.popen(command) as stdout:
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276 hello = stdout.read().strip()
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277 stdout.close()
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278 self.assertEqual(hello, "Hello")
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279
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280 data = 'plop'
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281 if mswindows:
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282 command = '"{}" -c "import sys; data=sys.stdin.read(); exit(len(data))"'
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283 else:
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284 command = "'{}' -c 'import sys; data=sys.stdin.read(); exit(len(data))'"
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285 command = command.format(sys.executable)
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286 with warnings.catch_warnings():
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287 warnings.simplefilter("ignore", DeprecationWarning)
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288 with platform.popen(command, 'w') as stdin:
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289 stdout = stdin.write(data)
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290 ret = stdin.close()
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291 self.assertIsNotNone(ret)
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292 if os.name == 'nt':
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293 returncode = ret
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294 else:
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295 returncode = ret >> 8
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296 self.assertEqual(returncode, len(data))
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297
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298
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299 def test_main():
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300 support.run_unittest(
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301 PlatformTest
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302 )
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303
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304 if __name__ == '__main__':
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305 test_main()