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annotate venv/lib/python2.7/site-packages/setuptools/tests/test_msvc9compiler.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 """
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2 Tests for msvc9compiler.
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3 """
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4
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5 import os
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6 import contextlib
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7 import distutils.errors
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8
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9 import pytest
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10 try:
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11 from unittest import mock
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12 except ImportError:
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13 import mock
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14
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15 from . import contexts
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16
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17 # importing only setuptools should apply the patch
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18 __import__('setuptools')
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19
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20 pytest.importorskip("distutils.msvc9compiler")
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21
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22
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23 def mock_reg(hkcu=None, hklm=None):
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24 """
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25 Return a mock for distutils.msvc9compiler.Reg, patched
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26 to mock out the functions that access the registry.
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27 """
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28
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29 _winreg = getattr(distutils.msvc9compiler, '_winreg', None)
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30 winreg = getattr(distutils.msvc9compiler, 'winreg', _winreg)
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31
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32 hives = {
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33 winreg.HKEY_CURRENT_USER: hkcu or {},
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34 winreg.HKEY_LOCAL_MACHINE: hklm or {},
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35 }
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36
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37 @classmethod
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38 def read_keys(cls, base, key):
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39 """Return list of registry keys."""
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40 hive = hives.get(base, {})
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41 return [
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42 k.rpartition('\\')[2]
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43 for k in hive if k.startswith(key.lower())
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44 ]
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45
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46 @classmethod
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47 def read_values(cls, base, key):
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48 """Return dict of registry keys and values."""
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49 hive = hives.get(base, {})
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50 return dict(
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51 (k.rpartition('\\')[2], hive[k])
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52 for k in hive if k.startswith(key.lower())
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53 )
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54
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55 return mock.patch.multiple(distutils.msvc9compiler.Reg,
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56 read_keys=read_keys, read_values=read_values)
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57
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58
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59 class TestModulePatch:
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60 """
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61 Ensure that importing setuptools is sufficient to replace
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62 the standard find_vcvarsall function with a version that
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63 recognizes the "Visual C++ for Python" package.
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64 """
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65
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66 key_32 = r'software\microsoft\devdiv\vcforpython\9.0\installdir'
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67 key_64 = r'software\wow6432node\microsoft\devdiv\vcforpython\9.0\installdir'
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68
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69 def test_patched(self):
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70 "Test the module is actually patched"
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71 mod_name = distutils.msvc9compiler.find_vcvarsall.__module__
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72 assert mod_name == "setuptools.msvc9_support", "find_vcvarsall unpatched"
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73
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74 def test_no_registry_entryies_means_nothing_found(self):
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75 """
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76 No registry entries or environment variable should lead to an error
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77 directing the user to download vcpython27.
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78 """
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79 find_vcvarsall = distutils.msvc9compiler.find_vcvarsall
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80 query_vcvarsall = distutils.msvc9compiler.query_vcvarsall
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81
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82 with contexts.environment(VS90COMNTOOLS=None):
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83 with mock_reg():
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84 assert find_vcvarsall(9.0) is None
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85
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86 expected = distutils.errors.DistutilsPlatformError
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87 with pytest.raises(expected) as exc:
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88 query_vcvarsall(9.0)
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89 assert 'aka.ms/vcpython27' in str(exc)
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90
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91 @pytest.yield_fixture
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92 def user_preferred_setting(self):
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93 """
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94 Set up environment with different install dirs for user vs. system
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95 and yield the user_install_dir for the expected result.
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96 """
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97 with self.mock_install_dir() as user_install_dir:
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98 with self.mock_install_dir() as system_install_dir:
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99 reg = mock_reg(
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100 hkcu={
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101 self.key_32: user_install_dir,
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102 },
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103 hklm={
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104 self.key_32: system_install_dir,
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105 self.key_64: system_install_dir,
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106 },
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107 )
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108 with reg:
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109 yield user_install_dir
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110
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111 def test_prefer_current_user(self, user_preferred_setting):
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112 """
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113 Ensure user's settings are preferred.
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114 """
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115 result = distutils.msvc9compiler.find_vcvarsall(9.0)
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116 expected = os.path.join(user_preferred_setting, 'vcvarsall.bat')
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117 assert expected == result
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118
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119 @pytest.yield_fixture
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120 def local_machine_setting(self):
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121 """
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122 Set up environment with only the system environment configured.
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123 """
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124 with self.mock_install_dir() as system_install_dir:
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125 reg = mock_reg(
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126 hklm={
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127 self.key_32: system_install_dir,
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128 },
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129 )
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130 with reg:
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131 yield system_install_dir
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132
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133 def test_local_machine_recognized(self, local_machine_setting):
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134 """
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135 Ensure machine setting is honored if user settings are not present.
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136 """
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137 result = distutils.msvc9compiler.find_vcvarsall(9.0)
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138 expected = os.path.join(local_machine_setting, 'vcvarsall.bat')
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139 assert expected == result
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140
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141 @pytest.yield_fixture
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142 def x64_preferred_setting(self):
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143 """
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144 Set up environment with 64-bit and 32-bit system settings configured
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145 and yield the canonical location.
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146 """
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147 with self.mock_install_dir() as x32_dir:
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148 with self.mock_install_dir() as x64_dir:
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149 reg = mock_reg(
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150 hklm={
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151 # This *should* only exist on 32-bit machines
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152 self.key_32: x32_dir,
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153 # This *should* only exist on 64-bit machines
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154 self.key_64: x64_dir,
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155 },
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156 )
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157 with reg:
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158 yield x32_dir
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159
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160 def test_ensure_64_bit_preferred(self, x64_preferred_setting):
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161 """
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162 Ensure 64-bit system key is preferred.
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163 """
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164 result = distutils.msvc9compiler.find_vcvarsall(9.0)
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165 expected = os.path.join(x64_preferred_setting, 'vcvarsall.bat')
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166 assert expected == result
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167
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168 @staticmethod
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169 @contextlib.contextmanager
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170 def mock_install_dir():
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171 """
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172 Make a mock install dir in a unique location so that tests can
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173 distinguish which dir was detected in a given scenario.
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174 """
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175 with contexts.tempdir() as result:
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176 vcvarsall = os.path.join(result, 'vcvarsall.bat')
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177 with open(vcvarsall, 'w'):
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178 pass
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179 yield result