Mercurial > hg
annotate tests/test-lock.py @ 29129:e6dfb0e4eeef
dispatch: add fail-* family of hooks
The post-* family of hooks will not run in case a command fails (i.e.
raises an exception). This makes it inconvenient to hook into events
such as doing something in case of a failed push.
We catch all exceptions to run the failure hook. I am not sure if this
is too aggressive, but tests apparently pass.
author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
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date | Thu, 28 Apr 2016 10:37:47 -0400 |
parents | 14033c5dd261 |
children | e067741d4607 |
rev | line source |
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1 from __future__ import absolute_import |
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2 |
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3 import copy |
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4 import os |
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5 import silenttestrunner |
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6 import tempfile |
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7 import types |
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8 import unittest |
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9 |
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10 from mercurial import ( |
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11 error, |
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12 lock, |
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13 scmutil, |
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14 ) |
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15 |
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16 testlockname = 'testlock' |
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17 |
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18 # work around http://bugs.python.org/issue1515 |
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19 if types.MethodType not in copy._deepcopy_dispatch: |
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20 def _deepcopy_method(x, memo): |
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21 return type(x)(x.im_func, copy.deepcopy(x.im_self, memo), x.im_class) |
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22 copy._deepcopy_dispatch[types.MethodType] = _deepcopy_method |
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23 |
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24 class lockwrapper(lock.lock): |
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25 def __init__(self, pidoffset, *args, **kwargs): |
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26 # lock.lock.__init__() calls lock(), so the pidoffset assignment needs |
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27 # to be earlier |
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28 self._pidoffset = pidoffset |
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29 super(lockwrapper, self).__init__(*args, **kwargs) |
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30 def _getpid(self): |
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31 return super(lockwrapper, self)._getpid() + self._pidoffset |
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32 |
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33 class teststate(object): |
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34 def __init__(self, testcase, dir, pidoffset=0): |
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35 self._testcase = testcase |
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36 self._acquirecalled = False |
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37 self._releasecalled = False |
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38 self._postreleasecalled = False |
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39 self.vfs = scmutil.vfs(dir, audit=False) |
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40 self._pidoffset = pidoffset |
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41 |
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42 def makelock(self, *args, **kwargs): |
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43 l = lockwrapper(self._pidoffset, self.vfs, testlockname, |
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44 releasefn=self.releasefn, acquirefn=self.acquirefn, |
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45 *args, **kwargs) |
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46 l.postrelease.append(self.postreleasefn) |
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47 return l |
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48 |
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49 def acquirefn(self): |
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50 self._acquirecalled = True |
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51 |
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52 def releasefn(self): |
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53 self._releasecalled = True |
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54 |
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55 def postreleasefn(self): |
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56 self._postreleasecalled = True |
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57 |
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58 def assertacquirecalled(self, called): |
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59 self._testcase.assertEqual( |
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60 self._acquirecalled, called, |
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61 'expected acquire to be %s but was actually %s' % ( |
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62 self._tocalled(called), |
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63 self._tocalled(self._acquirecalled), |
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64 )) |
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65 |
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66 def resetacquirefn(self): |
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67 self._acquirecalled = False |
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68 |
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69 def assertreleasecalled(self, called): |
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70 self._testcase.assertEqual( |
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71 self._releasecalled, called, |
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72 'expected release to be %s but was actually %s' % ( |
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73 self._tocalled(called), |
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74 self._tocalled(self._releasecalled), |
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75 )) |
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76 |
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77 def assertpostreleasecalled(self, called): |
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78 self._testcase.assertEqual( |
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79 self._postreleasecalled, called, |
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80 'expected postrelease to be %s but was actually %s' % ( |
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81 self._tocalled(called), |
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82 self._tocalled(self._postreleasecalled), |
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83 )) |
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84 |
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85 def assertlockexists(self, exists): |
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86 actual = self.vfs.lexists(testlockname) |
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87 self._testcase.assertEqual( |
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88 actual, exists, |
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89 'expected lock to %s but actually did %s' % ( |
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90 self._toexists(exists), |
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91 self._toexists(actual), |
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92 )) |
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93 |
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94 def _tocalled(self, called): |
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95 if called: |
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96 return 'called' |
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97 else: |
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98 return 'not called' |
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99 |
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100 def _toexists(self, exists): |
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101 if exists: |
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102 return 'exist' |
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103 else: |
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104 return 'not exist' |
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105 |
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106 class testlock(unittest.TestCase): |
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107 def testlock(self): |
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108 state = teststate(self, tempfile.mkdtemp(dir=os.getcwd())) |
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109 lock = state.makelock() |
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110 state.assertacquirecalled(True) |
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111 lock.release() |
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112 state.assertreleasecalled(True) |
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113 state.assertpostreleasecalled(True) |
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114 state.assertlockexists(False) |
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115 |
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116 def testrecursivelock(self): |
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117 state = teststate(self, tempfile.mkdtemp(dir=os.getcwd())) |
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118 lock = state.makelock() |
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119 state.assertacquirecalled(True) |
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120 |
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121 state.resetacquirefn() |
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122 lock.lock() |
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123 # recursive lock should not call acquirefn again |
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124 state.assertacquirecalled(False) |
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125 |
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126 lock.release() # brings lock refcount down from 2 to 1 |
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127 state.assertreleasecalled(False) |
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128 state.assertpostreleasecalled(False) |
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129 state.assertlockexists(True) |
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130 |
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131 lock.release() # releases the lock |
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132 state.assertreleasecalled(True) |
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133 state.assertpostreleasecalled(True) |
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134 state.assertlockexists(False) |
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135 |
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136 def testlockfork(self): |
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137 state = teststate(self, tempfile.mkdtemp(dir=os.getcwd())) |
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138 lock = state.makelock() |
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139 state.assertacquirecalled(True) |
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140 |
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141 # fake a fork |
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142 forklock = copy.deepcopy(lock) |
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143 forklock._pidoffset = 1 |
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144 forklock.release() |
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145 state.assertreleasecalled(False) |
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146 state.assertpostreleasecalled(False) |
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147 state.assertlockexists(True) |
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148 |
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149 # release the actual lock |
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150 lock.release() |
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151 state.assertreleasecalled(True) |
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152 state.assertpostreleasecalled(True) |
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153 state.assertlockexists(False) |
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154 |
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155 def testinheritlock(self): |
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156 d = tempfile.mkdtemp(dir=os.getcwd()) |
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157 parentstate = teststate(self, d) |
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158 parentlock = parentstate.makelock() |
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159 parentstate.assertacquirecalled(True) |
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160 |
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161 # set up lock inheritance |
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162 with parentlock.inherit() as lockname: |
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163 parentstate.assertreleasecalled(True) |
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164 parentstate.assertpostreleasecalled(False) |
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165 parentstate.assertlockexists(True) |
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166 |
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167 childstate = teststate(self, d, pidoffset=1) |
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168 childlock = childstate.makelock(parentlock=lockname) |
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169 childstate.assertacquirecalled(True) |
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170 |
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171 childlock.release() |
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172 childstate.assertreleasecalled(True) |
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173 childstate.assertpostreleasecalled(False) |
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174 childstate.assertlockexists(True) |
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175 |
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176 parentstate.resetacquirefn() |
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177 |
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178 parentstate.assertacquirecalled(True) |
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179 |
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180 parentlock.release() |
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181 parentstate.assertreleasecalled(True) |
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182 parentstate.assertpostreleasecalled(True) |
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183 parentstate.assertlockexists(False) |
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184 |
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185 def testmultilock(self): |
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186 d = tempfile.mkdtemp(dir=os.getcwd()) |
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187 state0 = teststate(self, d) |
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188 lock0 = state0.makelock() |
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189 state0.assertacquirecalled(True) |
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190 |
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191 with lock0.inherit() as lock0name: |
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192 state0.assertreleasecalled(True) |
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193 state0.assertpostreleasecalled(False) |
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194 state0.assertlockexists(True) |
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195 |
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196 state1 = teststate(self, d, pidoffset=1) |
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197 lock1 = state1.makelock(parentlock=lock0name) |
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198 state1.assertacquirecalled(True) |
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199 |
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200 # from within lock1, acquire another lock |
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201 with lock1.inherit() as lock1name: |
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202 # since the file on disk is lock0's this should have the same |
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203 # name |
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204 self.assertEqual(lock0name, lock1name) |
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205 |
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206 state2 = teststate(self, d, pidoffset=2) |
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207 lock2 = state2.makelock(parentlock=lock1name) |
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208 state2.assertacquirecalled(True) |
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209 |
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210 lock2.release() |
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211 state2.assertreleasecalled(True) |
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212 state2.assertpostreleasecalled(False) |
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213 state2.assertlockexists(True) |
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214 |
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215 state1.resetacquirefn() |
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216 |
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217 state1.assertacquirecalled(True) |
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218 |
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219 lock1.release() |
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220 state1.assertreleasecalled(True) |
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221 state1.assertpostreleasecalled(False) |
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222 state1.assertlockexists(True) |
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223 |
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224 lock0.release() |
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225 |
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226 def testinheritlockfork(self): |
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227 d = tempfile.mkdtemp(dir=os.getcwd()) |
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228 parentstate = teststate(self, d) |
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229 parentlock = parentstate.makelock() |
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230 parentstate.assertacquirecalled(True) |
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231 |
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232 # set up lock inheritance |
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233 with parentlock.inherit() as lockname: |
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234 childstate = teststate(self, d, pidoffset=1) |
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235 childlock = childstate.makelock(parentlock=lockname) |
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236 childstate.assertacquirecalled(True) |
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237 |
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238 # fork the child lock |
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239 forkchildlock = copy.deepcopy(childlock) |
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240 forkchildlock._pidoffset += 1 |
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241 forkchildlock.release() |
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242 childstate.assertreleasecalled(False) |
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243 childstate.assertpostreleasecalled(False) |
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244 childstate.assertlockexists(True) |
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245 |
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246 # release the child lock |
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247 childlock.release() |
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248 childstate.assertreleasecalled(True) |
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249 childstate.assertpostreleasecalled(False) |
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250 childstate.assertlockexists(True) |
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251 |
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252 parentlock.release() |
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253 |
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254 def testinheritcheck(self): |
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255 d = tempfile.mkdtemp(dir=os.getcwd()) |
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256 state = teststate(self, d) |
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257 def check(): |
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258 raise error.LockInheritanceContractViolation('check failed') |
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259 lock = state.makelock(inheritchecker=check) |
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260 state.assertacquirecalled(True) |
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261 |
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262 def tryinherit(): |
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263 with lock.inherit(): |
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264 pass |
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265 |
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266 self.assertRaises(error.LockInheritanceContractViolation, tryinherit) |
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267 |
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268 lock.release() |
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269 |
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270 if __name__ == '__main__': |
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271 silenttestrunner.main(__name__) |