Mercurial > hg
annotate tests/test-filecache.py @ 36969:452696bf3e60
test-template-engine: deduplicate methods of custom template engine
author | Yuya Nishihara <yuya@tcha.org> |
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date | Thu, 15 Mar 2018 20:10:54 +0900 |
parents | ffa3026d4196 |
children | b3ffa2faae04 |
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 stat |
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4 import subprocess |
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5 import sys |
14928 | 6 |
16683 | 7 if subprocess.call(['python', '%s/hghave' % os.environ['TESTDIR'], |
8 'cacheable']): | |
14928 | 9 sys.exit(80) |
10 | |
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11 from mercurial import ( |
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12 extensions, |
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13 hg, |
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14 localrepo, |
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15 pycompat, |
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16 ui as uimod, |
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17 util, |
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18 vfs as vfsmod, |
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19 ) |
14928 | 20 |
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21 if pycompat.ispy3: |
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22 xrange = range |
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23 |
14928 | 24 class fakerepo(object): |
25 def __init__(self): | |
26 self._filecache = {} | |
27 | |
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28 class fakevfs(object): |
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29 |
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30 def join(self, p): |
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31 return p |
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32 |
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33 vfs = fakevfs() |
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34 |
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35 def unfiltered(self): |
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36 return self |
14928 | 37 |
38 def sjoin(self, p): | |
39 return p | |
40 | |
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41 @localrepo.repofilecache('x', 'y') |
14928 | 42 def cached(self): |
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43 print('creating') |
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44 return 'string from function' |
14928 | 45 |
46 def invalidate(self): | |
47 for k in self._filecache: | |
48 try: | |
49 delattr(self, k) | |
50 except AttributeError: | |
51 pass | |
52 | |
53 def basic(repo): | |
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54 print("* neither file exists") |
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55 # calls function |
14928 | 56 repo.cached |
57 | |
58 repo.invalidate() | |
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59 print("* neither file still exists") |
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60 # uses cache |
14928 | 61 repo.cached |
62 | |
63 # create empty file | |
64 f = open('x', 'w') | |
65 f.close() | |
66 repo.invalidate() | |
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67 print("* empty file x created") |
14928 | 68 # should recreate the object |
69 repo.cached | |
70 | |
71 f = open('x', 'w') | |
72 f.write('a') | |
73 f.close() | |
74 repo.invalidate() | |
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75 print("* file x changed size") |
14928 | 76 # should recreate the object |
77 repo.cached | |
78 | |
79 repo.invalidate() | |
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80 print("* nothing changed with either file") |
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81 # stats file again, reuses object |
14928 | 82 repo.cached |
83 | |
84 # atomic replace file, size doesn't change | |
85 # hopefully st_mtime doesn't change as well so this doesn't use the cache | |
86 # because of inode change | |
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87 f = vfsmod.vfs('.')('x', 'w', atomictemp=True) |
14928 | 88 f.write('b') |
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89 f.close() |
14928 | 90 |
91 repo.invalidate() | |
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92 print("* file x changed inode") |
14928 | 93 repo.cached |
94 | |
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95 # create empty file y |
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96 f = open('y', 'w') |
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97 f.close() |
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98 repo.invalidate() |
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99 print("* empty file y created") |
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100 # should recreate the object |
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101 repo.cached |
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102 |
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103 f = open('y', 'w') |
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104 f.write('A') |
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105 f.close() |
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106 repo.invalidate() |
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107 print("* file y changed size") |
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108 # should recreate the object |
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109 repo.cached |
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110 |
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111 f = vfsmod.vfs('.')('y', 'w', atomictemp=True) |
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112 f.write('B') |
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113 f.close() |
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114 |
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115 repo.invalidate() |
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116 print("* file y changed inode") |
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117 repo.cached |
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118 |
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119 f = vfsmod.vfs('.')('x', 'w', atomictemp=True) |
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120 f.write('c') |
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121 f.close() |
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122 f = vfsmod.vfs('.')('y', 'w', atomictemp=True) |
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123 f.write('C') |
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124 f.close() |
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125 |
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126 repo.invalidate() |
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127 print("* both files changed inode") |
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128 repo.cached |
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129 |
14928 | 130 def fakeuncacheable(): |
131 def wrapcacheable(orig, *args, **kwargs): | |
132 return False | |
133 | |
134 def wrapinit(orig, *args, **kwargs): | |
135 pass | |
136 | |
137 originit = extensions.wrapfunction(util.cachestat, '__init__', wrapinit) | |
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138 origcacheable = extensions.wrapfunction(util.cachestat, 'cacheable', |
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139 wrapcacheable) |
14928 | 140 |
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141 for fn in ['x', 'y']: |
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142 try: |
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143 os.remove(fn) |
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144 except OSError: |
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145 pass |
14928 | 146 |
147 basic(fakerepo()) | |
148 | |
149 util.cachestat.cacheable = origcacheable | |
150 util.cachestat.__init__ = originit | |
151 | |
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152 def test_filecache_synced(): |
26098 | 153 # test old behavior that caused filecached properties to go out of sync |
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154 os.system('hg init && echo a >> a && hg ci -qAm.') |
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155 repo = hg.repository(uimod.ui.load()) |
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156 # first rollback clears the filecache, but changelog to stays in __dict__ |
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157 repo.rollback() |
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158 repo.commit('.') |
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159 # second rollback comes along and touches the changelog externally |
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160 # (file is moved) |
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161 repo.rollback() |
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162 # but since changelog isn't under the filecache control anymore, we don't |
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163 # see that it changed, and return the old changelog without reconstructing |
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164 # it |
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165 repo.commit('.') |
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166 |
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167 def setbeforeget(repo): |
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168 os.remove('x') |
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169 os.remove('y') |
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170 repo.cached = 'string set externally' |
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171 repo.invalidate() |
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172 print("* neither file exists") |
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173 print(repo.cached) |
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174 repo.invalidate() |
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175 f = open('x', 'w') |
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176 f.write('a') |
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177 f.close() |
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178 print("* file x created") |
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179 print(repo.cached) |
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180 |
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181 repo.cached = 'string 2 set externally' |
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182 repo.invalidate() |
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183 print("* string set externally again") |
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184 print(repo.cached) |
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185 |
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186 repo.invalidate() |
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187 f = open('y', 'w') |
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188 f.write('b') |
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189 f.close() |
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190 print("* file y created") |
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191 print(repo.cached) |
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192 |
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193 def antiambiguity(): |
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194 filename = 'ambigcheck' |
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195 |
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196 # try some times, because reproduction of ambiguity depends on |
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197 # "filesystem time" |
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198 for i in xrange(5): |
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199 fp = open(filename, 'w') |
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200 fp.write('FOO') |
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201 fp.close() |
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202 |
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203 oldstat = os.stat(filename) |
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204 if oldstat[stat.ST_CTIME] != oldstat[stat.ST_MTIME]: |
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205 # subsequent changing never causes ambiguity |
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206 continue |
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207 |
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208 repetition = 3 |
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209 |
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210 # repeat changing via checkambigatclosing, to examine whether |
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211 # st_mtime is advanced multiple times as expected |
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212 for i in xrange(repetition): |
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213 # explicit closing |
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214 fp = vfsmod.checkambigatclosing(open(filename, 'a')) |
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215 fp.write('FOO') |
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216 fp.close() |
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217 |
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218 # implicit closing by "with" statement |
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219 with vfsmod.checkambigatclosing(open(filename, 'a')) as fp: |
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220 fp.write('BAR') |
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221 |
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222 newstat = os.stat(filename) |
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223 if oldstat[stat.ST_CTIME] != newstat[stat.ST_CTIME]: |
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224 # timestamp ambiguity was naturally avoided while repetition |
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225 continue |
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226 |
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227 # st_mtime should be advanced "repetition * 2" times, because |
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228 # all changes occurred at same time (in sec) |
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229 expected = (oldstat[stat.ST_MTIME] + repetition * 2) & 0x7fffffff |
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230 if newstat[stat.ST_MTIME] != expected: |
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231 print("'newstat[stat.ST_MTIME] %s is not %s (as %s + %s * 2)" % |
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232 (newstat[stat.ST_MTIME], expected, |
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233 oldstat[stat.ST_MTIME], repetition)) |
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234 |
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235 # no more examination is needed regardless of result |
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236 break |
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237 else: |
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238 # This platform seems too slow to examine anti-ambiguity |
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239 # of file timestamp (or test happened to be executed at |
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240 # bad timing). Exit silently in this case, because running |
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241 # on other faster platforms can detect problems |
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242 pass |
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243 |
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244 print('basic:') |
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245 print() |
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247 print() |
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248 print('fakeuncacheable:') |
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249 print() |
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251 test_filecache_synced() |
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252 print() |
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253 print('setbeforeget:') |
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254 print() |
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255 setbeforeget(fakerepo()) |
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256 print() |
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257 print('antiambiguity:') |
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258 print() |
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259 antiambiguity() |