annotate tests/test-filecache.py @ 33349:28f75a1695fb

histedit: pass multiple nodes to strip (BC) Previously, histedit.cleanupnode pass root nodes one by one. Since repair.strip takes multiple nodes and can handle them just fine, pass all strip roots at once. This is BC because the number of strip backup files may change from N to 1.
author Jun Wu <quark@fb.com>
date Sat, 08 Jul 2017 16:50:31 -0700
parents 74cbbd5420ba
children daa5f47558cf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 from __future__ import absolute_import, print_function
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2 import os
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3 import subprocess
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4 import sys
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5
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6 if subprocess.call(['python', '%s/hghave' % os.environ['TESTDIR'],
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7 'cacheable']):
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8 sys.exit(80)
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9
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10 from mercurial import (
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11 extensions,
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12 hg,
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13 localrepo,
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14 ui as uimod,
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15 util,
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16 vfs as vfsmod,
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17 )
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18
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19 class fakerepo(object):
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20 def __init__(self):
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21 self._filecache = {}
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22
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23 class fakevfs(object):
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24
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25 def join(self, p):
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26 return p
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27
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28 vfs = fakevfs()
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29
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30 def unfiltered(self):
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31 return self
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32
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33 def sjoin(self, p):
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34 return p
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35
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36 @localrepo.repofilecache('x', 'y')
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37 def cached(self):
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38 print('creating')
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39 return 'string from function'
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40
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41 def invalidate(self):
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42 for k in self._filecache:
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43 try:
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44 delattr(self, k)
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45 except AttributeError:
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46 pass
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47
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48 def basic(repo):
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49 print("* neither file exists")
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50 # calls function
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51 repo.cached
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52
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53 repo.invalidate()
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54 print("* neither file still exists")
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55 # uses cache
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56 repo.cached
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57
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58 # create empty file
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59 f = open('x', 'w')
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60 f.close()
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61 repo.invalidate()
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62 print("* empty file x created")
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63 # should recreate the object
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64 repo.cached
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65
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66 f = open('x', 'w')
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67 f.write('a')
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68 f.close()
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69 repo.invalidate()
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70 print("* file x changed size")
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71 # should recreate the object
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72 repo.cached
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73
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74 repo.invalidate()
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75 print("* nothing changed with either file")
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76 # stats file again, reuses object
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77 repo.cached
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78
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79 # atomic replace file, size doesn't change
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80 # hopefully st_mtime doesn't change as well so this doesn't use the cache
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81 # because of inode change
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82 f = vfsmod.vfs('.')('x', 'w', atomictemp=True)
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83 f.write('b')
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84 f.close()
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85
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86 repo.invalidate()
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87 print("* file x changed inode")
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88 repo.cached
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89
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90 # create empty file y
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91 f = open('y', 'w')
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92 f.close()
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93 repo.invalidate()
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94 print("* empty file y created")
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95 # should recreate the object
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96 repo.cached
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97
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98 f = open('y', 'w')
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99 f.write('A')
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100 f.close()
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101 repo.invalidate()
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102 print("* file y changed size")
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103 # should recreate the object
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104 repo.cached
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105
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106 f = vfsmod.vfs('.')('y', 'w', atomictemp=True)
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107 f.write('B')
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108 f.close()
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109
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110 repo.invalidate()
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111 print("* file y changed inode")
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112 repo.cached
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113
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114 f = vfsmod.vfs('.')('x', 'w', atomictemp=True)
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115 f.write('c')
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116 f.close()
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117 f = vfsmod.vfs('.')('y', 'w', atomictemp=True)
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118 f.write('C')
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119 f.close()
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120
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121 repo.invalidate()
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122 print("* both files changed inode")
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123 repo.cached
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124
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125 def fakeuncacheable():
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126 def wrapcacheable(orig, *args, **kwargs):
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127 return False
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128
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129 def wrapinit(orig, *args, **kwargs):
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130 pass
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131
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132 originit = extensions.wrapfunction(util.cachestat, '__init__', wrapinit)
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133 origcacheable = extensions.wrapfunction(util.cachestat, 'cacheable',
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134 wrapcacheable)
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135
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136 for fn in ['x', 'y']:
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137 try:
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138 os.remove(fn)
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139 except OSError:
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140 pass
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141
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142 basic(fakerepo())
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143
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144 util.cachestat.cacheable = origcacheable
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145 util.cachestat.__init__ = originit
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146
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147 def test_filecache_synced():
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timeless@mozdev.org
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148 # test old behavior that caused filecached properties to go out of sync
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149 os.system('hg init && echo a >> a && hg ci -qAm.')
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150 repo = hg.repository(uimod.ui.load())
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151 # first rollback clears the filecache, but changelog to stays in __dict__
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152 repo.rollback()
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153 repo.commit('.')
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154 # second rollback comes along and touches the changelog externally
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155 # (file is moved)
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156 repo.rollback()
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157 # but since changelog isn't under the filecache control anymore, we don't
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158 # see that it changed, and return the old changelog without reconstructing
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159 # it
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160 repo.commit('.')
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161
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162 def setbeforeget(repo):
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163 os.remove('x')
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164 os.remove('y')
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165 repo.cached = 'string set externally'
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166 repo.invalidate()
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167 print("* neither file exists")
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168 print(repo.cached)
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169 repo.invalidate()
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170 f = open('x', 'w')
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171 f.write('a')
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172 f.close()
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173 print("* file x created")
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174 print(repo.cached)
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175
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176 repo.cached = 'string 2 set externally'
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177 repo.invalidate()
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178 print("* string set externally again")
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179 print(repo.cached)
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180
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181 repo.invalidate()
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182 f = open('y', 'w')
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183 f.write('b')
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184 f.close()
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185 print("* file y created")
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186 print(repo.cached)
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187
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188 def antiambiguity():
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189 filename = 'ambigcheck'
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190
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191 # try some times, because reproduction of ambiguity depends on
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192 # "filesystem time"
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193 for i in xrange(5):
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194 fp = open(filename, 'w')
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195 fp.write('FOO')
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196 fp.close()
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197
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198 oldstat = os.stat(filename)
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199 if oldstat.st_ctime != oldstat.st_mtime:
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200 # subsequent changing never causes ambiguity
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201 continue
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202
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203 repetition = 3
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204
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205 # repeat changing via checkambigatclosing, to examine whether
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206 # st_mtime is advanced multiple times as expected
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207 for i in xrange(repetition):
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208 # explicit closing
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209 fp = vfsmod.checkambigatclosing(open(filename, 'a'))
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210 fp.write('FOO')
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211 fp.close()
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212
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213 # implicit closing by "with" statement
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214 with vfsmod.checkambigatclosing(open(filename, 'a')) as fp:
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215 fp.write('BAR')
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216
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217 newstat = os.stat(filename)
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218 if oldstat.st_ctime != newstat.st_ctime:
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219 # timestamp ambiguity was naturally avoided while repetition
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220 continue
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 28803
diff changeset
221
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222 # st_mtime should be advanced "repetition * 2" times, because
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223 # all changes occurred at same time (in sec)
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224 expected = (oldstat.st_mtime + repetition * 2) & 0x7fffffff
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225 if newstat.st_mtime != expected:
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226 print("'newstat.st_mtime %s is not %s (as %s + %s * 2)" %
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227 (newstat.st_mtime, expected, oldstat.st_mtime, repetition))
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228
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229 # no more examination is needed regardless of result
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230 break
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231 else:
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232 # This platform seems too slow to examine anti-ambiguity
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233 # of file timestamp (or test happened to be executed at
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234 # bad timing). Exit silently in this case, because running
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235 # on other faster platforms can detect problems
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236 pass
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237
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238 print('basic:')
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239 print()
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240 basic(fakerepo())
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241 print()
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242 print('fakeuncacheable:')
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243 print()
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244 fakeuncacheable()
18313
3e4a944c0d04 destroyed: keep the filecache in sync with __dict__ (issue3335) (issue3693) (issue3743)
Idan Kamara <idankk86@gmail.com>
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diff changeset
245 test_filecache_synced()
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246 print()
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247 print('setbeforeget:')
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diff changeset
248 print()
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diff changeset
249 setbeforeget(fakerepo())
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250 print()
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diff changeset
251 print('antiambiguity:')
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252 print()
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diff changeset
253 antiambiguity()