Mercurial > hg
annotate tests/test-filecache.py @ 30993:9c2977ceaa46
pager: move more behavior into core
This moves the global flag and the --pager=yes logic into core. Only
functionality change is that users now always get a --pager flag and
can enable the pager via the flag without the extension active.
Moving the flag into core exposes a defect in the ro localization,
which will have to be corrected later.
author | Augie Fackler <augie@google.com> |
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date | Wed, 15 Feb 2017 17:47:57 -0500 |
parents | d83ca854fa21 |
children | 21fa3d3688f3 |
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 scmutil, |
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14 ui as uimod, |
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15 util, |
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16 ) |
14928 | 17 |
18 filecache = scmutil.filecache | |
19 | |
20 class fakerepo(object): | |
21 def __init__(self): | |
22 self._filecache = {} | |
23 | |
24 def join(self, p): | |
25 return p | |
26 | |
27 def sjoin(self, p): | |
28 return p | |
29 | |
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30 @filecache('x', 'y') |
14928 | 31 def cached(self): |
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32 print('creating') |
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33 return 'string from function' |
14928 | 34 |
35 def invalidate(self): | |
36 for k in self._filecache: | |
37 try: | |
38 delattr(self, k) | |
39 except AttributeError: | |
40 pass | |
41 | |
42 def basic(repo): | |
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43 print("* neither file exists") |
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44 # calls function |
14928 | 45 repo.cached |
46 | |
47 repo.invalidate() | |
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48 print("* neither file still exists") |
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49 # uses cache |
14928 | 50 repo.cached |
51 | |
52 # create empty file | |
53 f = open('x', 'w') | |
54 f.close() | |
55 repo.invalidate() | |
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56 print("* empty file x created") |
14928 | 57 # should recreate the object |
58 repo.cached | |
59 | |
60 f = open('x', 'w') | |
61 f.write('a') | |
62 f.close() | |
63 repo.invalidate() | |
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64 print("* file x changed size") |
14928 | 65 # should recreate the object |
66 repo.cached | |
67 | |
68 repo.invalidate() | |
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69 print("* nothing changed with either file") |
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70 # stats file again, reuses object |
14928 | 71 repo.cached |
72 | |
73 # atomic replace file, size doesn't change | |
74 # hopefully st_mtime doesn't change as well so this doesn't use the cache | |
75 # because of inode change | |
76 f = scmutil.opener('.')('x', 'w', atomictemp=True) | |
77 f.write('b') | |
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78 f.close() |
14928 | 79 |
80 repo.invalidate() | |
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81 print("* file x changed inode") |
14928 | 82 repo.cached |
83 | |
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84 # create empty file y |
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85 f = open('y', 'w') |
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86 f.close() |
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87 repo.invalidate() |
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88 print("* empty file y created") |
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89 # should recreate the object |
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90 repo.cached |
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91 |
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92 f = open('y', 'w') |
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93 f.write('A') |
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94 f.close() |
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95 repo.invalidate() |
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96 print("* file y changed size") |
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97 # should recreate the object |
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98 repo.cached |
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99 |
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100 f = scmutil.opener('.')('y', 'w', atomictemp=True) |
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101 f.write('B') |
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102 f.close() |
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103 |
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104 repo.invalidate() |
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105 print("* file y changed inode") |
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106 repo.cached |
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107 |
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108 f = scmutil.opener('.')('x', 'w', atomictemp=True) |
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109 f.write('c') |
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110 f.close() |
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111 f = scmutil.opener('.')('y', 'w', atomictemp=True) |
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112 f.write('C') |
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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("* both files changed inode") |
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117 repo.cached |
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118 |
14928 | 119 def fakeuncacheable(): |
120 def wrapcacheable(orig, *args, **kwargs): | |
121 return False | |
122 | |
123 def wrapinit(orig, *args, **kwargs): | |
124 pass | |
125 | |
126 originit = extensions.wrapfunction(util.cachestat, '__init__', wrapinit) | |
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127 origcacheable = extensions.wrapfunction(util.cachestat, 'cacheable', |
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128 wrapcacheable) |
14928 | 129 |
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130 for fn in ['x', 'y']: |
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131 try: |
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132 os.remove(fn) |
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133 except OSError: |
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134 pass |
14928 | 135 |
136 basic(fakerepo()) | |
137 | |
138 util.cachestat.cacheable = origcacheable | |
139 util.cachestat.__init__ = originit | |
140 | |
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141 def test_filecache_synced(): |
26098 | 142 # test old behavior that caused filecached properties to go out of sync |
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143 os.system('hg init && echo a >> a && hg ci -qAm.') |
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144 repo = hg.repository(uimod.ui.load()) |
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145 # first rollback clears the filecache, but changelog to stays in __dict__ |
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146 repo.rollback() |
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147 repo.commit('.') |
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148 # second rollback comes along and touches the changelog externally |
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149 # (file is moved) |
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150 repo.rollback() |
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151 # but since changelog isn't under the filecache control anymore, we don't |
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152 # see that it changed, and return the old changelog without reconstructing |
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153 # it |
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154 repo.commit('.') |
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155 |
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156 def setbeforeget(repo): |
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157 os.remove('x') |
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158 os.remove('y') |
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159 repo.cached = 'string set externally' |
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160 repo.invalidate() |
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161 print("* neither file exists") |
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162 print(repo.cached) |
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163 repo.invalidate() |
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164 f = open('x', 'w') |
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165 f.write('a') |
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166 f.close() |
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167 print("* file x created") |
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168 print(repo.cached) |
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169 |
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170 repo.cached = 'string 2 set externally' |
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171 repo.invalidate() |
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172 print("* string set externally again") |
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173 print(repo.cached) |
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174 |
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175 repo.invalidate() |
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176 f = open('y', 'w') |
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177 f.write('b') |
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178 f.close() |
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179 print("* file y created") |
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180 print(repo.cached) |
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181 |
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182 def antiambiguity(): |
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183 filename = 'ambigcheck' |
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184 |
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185 # try some times, because reproduction of ambiguity depends on |
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186 # "filesystem time" |
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187 for i in xrange(5): |
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188 fp = open(filename, 'w') |
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189 fp.write('FOO') |
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190 fp.close() |
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191 |
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192 oldstat = os.stat(filename) |
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193 if oldstat.st_ctime != oldstat.st_mtime: |
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194 # subsequent changing never causes ambiguity |
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195 continue |
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196 |
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197 repetition = 3 |
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198 |
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199 # repeat changing via checkambigatclosing, to examine whether |
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200 # st_mtime is advanced multiple times as expected |
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201 for i in xrange(repetition): |
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202 # explicit closing |
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203 fp = scmutil.checkambigatclosing(open(filename, 'a')) |
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204 fp.write('FOO') |
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205 fp.close() |
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206 |
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207 # implicit closing by "with" statement |
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208 with scmutil.checkambigatclosing(open(filename, 'a')) as fp: |
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209 fp.write('BAR') |
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210 |
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211 newstat = os.stat(filename) |
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212 if oldstat.st_ctime != newstat.st_ctime: |
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213 # timestamp ambiguity was naturally avoided while repetition |
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214 continue |
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215 |
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216 # st_mtime should be advanced "repetition * 2" times, because |
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217 # all changes occurred at same time (in sec) |
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218 expected = (oldstat.st_mtime + repetition * 2) & 0x7fffffff |
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219 if newstat.st_mtime != expected: |
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220 print("'newstat.st_mtime %s is not %s (as %s + %s * 2)" % |
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221 (newstat.st_mtime, expected, oldstat.st_mtime, repetition)) |
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222 |
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223 # no more examination is needed regardless of result |
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224 break |
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225 else: |
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226 # This platform seems too slow to examine anti-ambiguity |
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227 # of file timestamp (or test happened to be executed at |
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228 # bad timing). Exit silently in this case, because running |
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229 # on other faster platforms can detect problems |
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230 pass |
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231 |
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232 print('basic:') |
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233 print() |
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235 print() |
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236 print('fakeuncacheable:') |
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237 print() |
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239 test_filecache_synced() |
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240 print() |
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241 print('setbeforeget:') |
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242 print() |
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243 setbeforeget(fakerepo()) |
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244 print() |
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245 print('antiambiguity:') |
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246 print() |
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247 antiambiguity() |