Mercurial > hg
annotate tests/test-filecache.py @ 34980:705d0f2bb677 stable
pathutil: add doctests for canonpath()
This is a followup to f445b10dc7fb. Since there's no way to ensure that more
drive letters than C: exist, this seems like the only way to test it. This is
enough to catch the f445b10dc7fb scenario, as well as CWD outside of the repo
when the path isn't prefixed with path/to/repo.
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Fri, 03 Nov 2017 22:22:50 -0400 |
parents | 74cbbd5420ba |
children | daa5f47558cf |
rev | line source |
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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 |
14928 | 5 |
16683 | 6 if subprocess.call(['python', '%s/hghave' % os.environ['TESTDIR'], |
7 'cacheable']): | |
14928 | 8 sys.exit(80) |
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 ) |
14928 | 18 |
19 class fakerepo(object): | |
20 def __init__(self): | |
21 self._filecache = {} | |
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 |
14928 | 32 |
33 def sjoin(self, p): | |
34 return p | |
35 | |
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36 @localrepo.repofilecache('x', 'y') |
14928 | 37 def cached(self): |
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38 print('creating') |
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39 return 'string from function' |
14928 | 40 |
41 def invalidate(self): | |
42 for k in self._filecache: | |
43 try: | |
44 delattr(self, k) | |
45 except AttributeError: | |
46 pass | |
47 | |
48 def basic(repo): | |
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49 print("* neither file exists") |
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50 # calls function |
14928 | 51 repo.cached |
52 | |
53 repo.invalidate() | |
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54 print("* neither file still exists") |
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55 # uses cache |
14928 | 56 repo.cached |
57 | |
58 # create empty file | |
59 f = open('x', 'w') | |
60 f.close() | |
61 repo.invalidate() | |
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62 print("* empty file x created") |
14928 | 63 # should recreate the object |
64 repo.cached | |
65 | |
66 f = open('x', 'w') | |
67 f.write('a') | |
68 f.close() | |
69 repo.invalidate() | |
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70 print("* file x changed size") |
14928 | 71 # should recreate the object |
72 repo.cached | |
73 | |
74 repo.invalidate() | |
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75 print("* nothing changed with either file") |
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76 # stats file again, reuses object |
14928 | 77 repo.cached |
78 | |
79 # atomic replace file, size doesn't change | |
80 # hopefully st_mtime doesn't change as well so this doesn't use the cache | |
81 # because of inode change | |
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82 f = vfsmod.vfs('.')('x', 'w', atomictemp=True) |
14928 | 83 f.write('b') |
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84 f.close() |
14928 | 85 |
86 repo.invalidate() | |
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87 print("* file x changed inode") |
14928 | 88 repo.cached |
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 |
14928 | 125 def fakeuncacheable(): |
126 def wrapcacheable(orig, *args, **kwargs): | |
127 return False | |
128 | |
129 def wrapinit(orig, *args, **kwargs): | |
130 pass | |
131 | |
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) |
14928 | 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 |
14928 | 141 |
142 basic(fakerepo()) | |
143 | |
144 util.cachestat.cacheable = origcacheable | |
145 util.cachestat.__init__ = originit | |
146 | |
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147 def test_filecache_synced(): |
26098 | 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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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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241 print() |
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242 print('fakeuncacheable:') |
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243 print() |
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245 test_filecache_synced() |
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246 print() |
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247 print('setbeforeget:') |
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248 print() |
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249 setbeforeget(fakerepo()) |
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250 print() |
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251 print('antiambiguity:') |
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252 print() |
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253 antiambiguity() |