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