Mercurial > hg
annotate tests/test-filecache.py @ 46924:ca0049946e9a
split: avoid strip if split is a no-op (identical to original)
Differential Revision: https://phab.mercurial-scm.org/D10389
author | Kyle Lippincott <spectral@google.com> |
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date | Mon, 12 Apr 2021 19:25:34 -0700 |
parents | e01ea8325859 |
children | 6000f5b25c9b |
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 |
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7 if subprocess.call( |
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8 [sys.executable, '%s/hghave' % os.environ['TESTDIR'], 'cacheable'] |
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9 ): |
14928 | 10 sys.exit(80) |
11 | |
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12 print_ = print |
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13 |
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14 |
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15 def print(*args, **kwargs): |
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16 """print() wrapper that flushes stdout buffers to avoid py3 buffer issues |
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17 |
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18 We could also just write directly to sys.stdout.buffer the way the |
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19 ui object will, but this was easier for porting the test. |
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20 """ |
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21 print_(*args, **kwargs) |
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22 sys.stdout.flush() |
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23 |
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24 |
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25 from mercurial import ( |
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26 extensions, |
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27 hg, |
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28 localrepo, |
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29 pycompat, |
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30 ui as uimod, |
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31 util, |
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32 vfs as vfsmod, |
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33 ) |
14928 | 34 |
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35 if pycompat.ispy3: |
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36 xrange = range |
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37 |
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38 |
14928 | 39 class fakerepo(object): |
40 def __init__(self): | |
41 self._filecache = {} | |
42 | |
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43 class fakevfs(object): |
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44 def join(self, p): |
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45 return p |
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46 |
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47 vfs = fakevfs() |
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48 |
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49 def unfiltered(self): |
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50 return self |
14928 | 51 |
52 def sjoin(self, p): | |
53 return p | |
54 | |
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55 @localrepo.repofilecache('x', 'y') |
14928 | 56 def cached(self): |
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57 print('creating') |
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58 return 'string from function' |
14928 | 59 |
60 def invalidate(self): | |
61 for k in self._filecache: | |
62 try: | |
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63 delattr(self, pycompat.sysstr(k)) |
14928 | 64 except AttributeError: |
65 pass | |
66 | |
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67 |
14928 | 68 def basic(repo): |
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69 print("* neither file exists") |
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70 # calls function |
14928 | 71 repo.cached |
72 | |
73 repo.invalidate() | |
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74 print("* neither file still exists") |
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75 # uses cache |
14928 | 76 repo.cached |
77 | |
78 # create empty file | |
79 f = open('x', 'w') | |
80 f.close() | |
81 repo.invalidate() | |
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82 print("* empty file x created") |
14928 | 83 # should recreate the object |
84 repo.cached | |
85 | |
86 f = open('x', 'w') | |
87 f.write('a') | |
88 f.close() | |
89 repo.invalidate() | |
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90 print("* file x changed size") |
14928 | 91 # should recreate the object |
92 repo.cached | |
93 | |
94 repo.invalidate() | |
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95 print("* nothing changed with either file") |
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96 # stats file again, reuses object |
14928 | 97 repo.cached |
98 | |
99 # atomic replace file, size doesn't change | |
100 # hopefully st_mtime doesn't change as well so this doesn't use the cache | |
101 # because of inode change | |
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102 f = vfsmod.vfs(b'.')(b'x', b'w', atomictemp=True) |
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103 f.write(b'b') |
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104 f.close() |
14928 | 105 |
106 repo.invalidate() | |
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107 print("* file x changed inode") |
14928 | 108 repo.cached |
109 | |
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110 # create empty file y |
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111 f = open('y', 'w') |
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112 f.close() |
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113 repo.invalidate() |
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114 print("* empty file y created") |
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115 # should recreate the object |
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116 repo.cached |
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117 |
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118 f = open('y', 'w') |
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119 f.write('A') |
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120 f.close() |
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121 repo.invalidate() |
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122 print("* file y changed size") |
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123 # should recreate the object |
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124 repo.cached |
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125 |
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126 f = vfsmod.vfs(b'.')(b'y', b'w', atomictemp=True) |
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127 f.write(b'B') |
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128 f.close() |
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129 |
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130 repo.invalidate() |
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131 print("* file y changed inode") |
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132 repo.cached |
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133 |
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134 f = vfsmod.vfs(b'.')(b'x', b'w', atomictemp=True) |
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135 f.write(b'c') |
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136 f.close() |
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137 f = vfsmod.vfs(b'.')(b'y', b'w', atomictemp=True) |
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138 f.write(b'C') |
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139 f.close() |
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140 |
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141 repo.invalidate() |
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142 print("* both files changed inode") |
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143 repo.cached |
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144 |
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145 |
14928 | 146 def fakeuncacheable(): |
147 def wrapcacheable(orig, *args, **kwargs): | |
148 return False | |
149 | |
150 def wrapinit(orig, *args, **kwargs): | |
151 pass | |
152 | |
153 originit = extensions.wrapfunction(util.cachestat, '__init__', wrapinit) | |
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154 origcacheable = extensions.wrapfunction( |
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155 util.cachestat, 'cacheable', wrapcacheable |
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156 ) |
14928 | 157 |
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158 for fn in ['x', 'y']: |
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159 try: |
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160 os.remove(fn) |
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161 except OSError: |
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162 pass |
14928 | 163 |
164 basic(fakerepo()) | |
165 | |
166 util.cachestat.cacheable = origcacheable | |
167 util.cachestat.__init__ = originit | |
168 | |
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169 |
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170 def test_filecache_synced(): |
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172 os.system('hg init && echo a >> a && hg ci -qAm.') |
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173 repo = hg.repository(uimod.ui.load()) |
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174 # first rollback clears the filecache, but changelog to stays in __dict__ |
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175 repo.rollback() |
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176 repo.commit(b'.') |
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177 # second rollback comes along and touches the changelog externally |
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178 # (file is moved) |
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179 repo.rollback() |
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180 # but since changelog isn't under the filecache control anymore, we don't |
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181 # see that it changed, and return the old changelog without reconstructing |
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182 # it |
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183 repo.commit(b'.') |
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184 |
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185 |
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186 def setbeforeget(repo): |
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187 os.remove('x') |
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188 os.remove('y') |
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189 repo.__class__.cached.set(repo, 'string set externally') |
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190 repo.invalidate() |
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191 print("* neither file exists") |
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192 print(repo.cached) |
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193 repo.invalidate() |
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194 f = open('x', 'w') |
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195 f.write('a') |
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196 f.close() |
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197 print("* file x created") |
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198 print(repo.cached) |
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199 |
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200 repo.__class__.cached.set(repo, 'string 2 set externally') |
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201 repo.invalidate() |
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202 print("* string set externally again") |
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203 print(repo.cached) |
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204 |
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205 repo.invalidate() |
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206 f = open('y', 'w') |
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207 f.write('b') |
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208 f.close() |
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209 print("* file y created") |
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210 print(repo.cached) |
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211 |
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212 |
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213 def antiambiguity(): |
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214 filename = 'ambigcheck' |
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215 |
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216 # try some times, because reproduction of ambiguity depends on |
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217 # "filesystem time" |
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218 for i in xrange(5): |
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219 fp = open(filename, 'w') |
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220 fp.write('FOO') |
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221 fp.close() |
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222 |
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223 oldstat = os.stat(filename) |
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224 if oldstat[stat.ST_CTIME] != oldstat[stat.ST_MTIME]: |
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225 # subsequent changing never causes ambiguity |
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226 continue |
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227 |
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228 repetition = 3 |
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229 |
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230 # repeat changing via checkambigatclosing, to examine whether |
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231 # st_mtime is advanced multiple times as expected |
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232 for i in xrange(repetition): |
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233 # explicit closing |
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234 fp = vfsmod.checkambigatclosing(open(filename, 'a')) |
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235 fp.write('FOO') |
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236 fp.close() |
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237 |
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238 # implicit closing by "with" statement |
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239 with vfsmod.checkambigatclosing(open(filename, 'a')) as fp: |
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240 fp.write('BAR') |
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241 |
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242 newstat = os.stat(filename) |
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243 if oldstat[stat.ST_CTIME] != newstat[stat.ST_CTIME]: |
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244 # timestamp ambiguity was naturally avoided while repetition |
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245 continue |
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246 |
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247 # st_mtime should be advanced "repetition * 2" times, because |
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248 # all changes occurred at same time (in sec) |
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249 expected = (oldstat[stat.ST_MTIME] + repetition * 2) & 0x7FFFFFFF |
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250 if newstat[stat.ST_MTIME] != expected: |
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251 print( |
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252 "'newstat[stat.ST_MTIME] %s is not %s (as %s + %s * 2)" |
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253 % ( |
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254 newstat[stat.ST_MTIME], |
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255 expected, |
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256 oldstat[stat.ST_MTIME], |
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257 repetition, |
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258 ) |
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259 ) |
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260 |
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261 # no more examination is needed regardless of result |
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262 break |
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263 else: |
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264 # This platform seems too slow to examine anti-ambiguity |
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265 # of file timestamp (or test happened to be executed at |
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266 # bad timing). Exit silently in this case, because running |
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267 # on other faster platforms can detect problems |
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268 pass |
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269 |
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270 |
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271 print('basic:') |
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272 print() |
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274 print() |
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275 print('fakeuncacheable:') |
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276 print() |
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destroyed: keep the filecache in sync with __dict__ (issue3335) (issue3693) (issue3743)
Idan Kamara <idankk86@gmail.com>
parents:
16688
diff
changeset
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278 test_filecache_synced() |
28742
a08c90d622eb
py3: use print_function in test-filecache.py
Robert Stanca <robert.stanca7@gmail.com>
parents:
28741
diff
changeset
|
279 print() |
a08c90d622eb
py3: use print_function in test-filecache.py
Robert Stanca <robert.stanca7@gmail.com>
parents:
28741
diff
changeset
|
280 print('setbeforeget:') |
a08c90d622eb
py3: use print_function in test-filecache.py
Robert Stanca <robert.stanca7@gmail.com>
parents:
28741
diff
changeset
|
281 print() |
18316
f36375576ed5
filecache: create an entry in _filecache when __set__ is called for a missing one
Idan Kamara <idankk86@gmail.com>
parents:
18313
diff
changeset
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282 setbeforeget(fakerepo()) |
29995
57830bd0e787
scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
28803
diff
changeset
|
283 print() |
57830bd0e787
scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
28803
diff
changeset
|
284 print('antiambiguity:') |
57830bd0e787
scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
28803
diff
changeset
|
285 print() |
57830bd0e787
scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
28803
diff
changeset
|
286 antiambiguity() |