Mercurial > hg
annotate tests/test-update-atomic.t @ 41506:3e89736b98ce
py3: conditionalize test-demandimport.py for Python 3
The Python 3 lazy importer uses the LazyLoader that is part of
importlib.
On Python 3 and later, LazyLoader is implemented using a custom module
type that defines a __getattribute__ which triggers module loading.
Furthermore, there are additional differences as well. For example,
it appears that Python 3 will return an existing sys.modules
entry instead of constructing a new module object.
This commit adds additional test coverage for lazy importing
behavior to cover the differences between Python 2 and 3. This
reveals that the test and some lazy import functionality is kinda
busted. For example, the test assumes "contextlib" will be lazy.
But in reality an import before it has already imported contextlib!
There's definitely room to improve the behavior of the demand
importer code, both for Python 2 and 3. But at least the test
passes on Python 3 now.
Differential Revision: https://phab.mercurial-scm.org/D5796
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Fri, 01 Feb 2019 16:47:29 -0800 |
parents | 0a0927f7549d |
children | 1bc345d488fd |
rev | line source |
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1 #require execbit unix-permissions |
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2 |
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3 Checking that experimental.atomic-file works. |
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4 |
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5 $ cat > $TESTTMP/show_mode.py <<EOF |
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6 > from __future__ import print_function |
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7 > import os |
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8 > import stat |
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9 > import sys |
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10 > ST_MODE = stat.ST_MODE |
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11 > |
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12 > for file_path in sys.argv[1:]: |
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13 > file_stat = os.stat(file_path) |
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14 > octal_mode = oct(file_stat[ST_MODE] & 0o777).replace('o', '') |
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15 > print("%s:%s" % (file_path, octal_mode)) |
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16 > |
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17 > EOF |
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18 |
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19 $ hg init repo |
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20 $ cd repo |
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21 |
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22 $ cat > .hg/showwrites.py <<EOF |
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23 > from __future__ import print_function |
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24 > from mercurial import pycompat |
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25 > from mercurial.utils import stringutil |
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26 > def uisetup(ui): |
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27 > from mercurial import vfs |
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28 > class newvfs(vfs.vfs): |
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29 > def __call__(self, *args, **kwargs): |
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30 > print(pycompat.sysstr(stringutil.pprint( |
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31 > ('vfs open', args, sorted(list(kwargs.items())))))) |
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32 > return super(newvfs, self).__call__(*args, **kwargs) |
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33 > vfs.vfs = newvfs |
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34 > EOF |
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35 |
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36 $ for v in a1 a2 b1 b2 c ro; do echo $v > $v; done |
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37 $ chmod +x b* |
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38 $ hg commit -Aqm _ |
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39 |
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40 # We check that |
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41 # - the changes are actually atomic |
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42 # - that permissions are correct (all 4 cases of (executable before) * (executable after)) |
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43 # - that renames work, though they should be atomic anyway |
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44 # - that it works when source files are read-only (but directories are read-write still) |
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45 |
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46 $ for v in a1 a2 b1 b2 ro; do echo changed-$v > $v; done |
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47 $ chmod -x *1; chmod +x *2 |
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48 $ hg rename c d |
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49 $ hg commit -qm _ |
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50 |
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51 Check behavior without update.atomic-file |
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52 |
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53 $ hg update -r 0 -q |
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54 $ hg update -r 1 --config extensions.showwrites=.hg/showwrites.py 2>&1 | grep "a1'.*wb" |
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55 ('vfs open', ('a1', 'wb'), [('atomictemp', False), ('backgroundclose', True)]) |
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56 |
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57 $ python $TESTTMP/show_mode.py * |
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58 a1:0644 |
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59 a2:0755 |
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60 b1:0644 |
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61 b2:0755 |
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62 d:0644 |
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63 ro:0644 |
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64 |
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65 Add a second revision for the ro file so we can test update when the file is |
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66 present or not |
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67 |
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68 $ echo "ro" > ro |
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69 |
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70 $ hg commit -qm _ |
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71 |
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72 Check behavior without update.atomic-file first |
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73 |
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74 $ hg update -C -r 0 -q |
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75 |
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76 $ hg update -r 1 |
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77 6 files updated, 0 files merged, 1 files removed, 0 files unresolved |
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78 |
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79 $ python $TESTTMP/show_mode.py * |
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80 a1:0644 |
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81 a2:0755 |
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82 b1:0644 |
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83 b2:0755 |
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84 d:0644 |
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85 ro:0644 |
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86 |
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87 Manually reset the mode of the read-only file |
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88 |
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89 $ chmod a-w ro |
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90 |
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91 $ python $TESTTMP/show_mode.py ro |
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92 ro:0444 |
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93 |
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94 Now the file is present, try to update and check the permissions of the file |
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95 |
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96 $ hg up -r 2 |
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97 1 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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98 |
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99 $ python $TESTTMP/show_mode.py ro |
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100 ro:0644 |
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101 |
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102 # The file which was read-only is now writable in the default behavior |
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103 |
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104 Check behavior with update.atomic-files |
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105 |
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106 |
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107 $ cat >> .hg/hgrc <<EOF |
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108 > [experimental] |
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109 > update.atomic-file = true |
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110 > EOF |
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111 |
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112 $ hg update -C -r 0 -q |
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113 $ hg update -r 1 --config extensions.showwrites=.hg/showwrites.py 2>&1 | grep "a1'.*wb" |
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114 ('vfs open', ('a1', 'wb'), [('atomictemp', True), ('backgroundclose', True)]) |
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115 $ hg st -A --rev 1 |
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116 C a1 |
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117 C a2 |
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118 C b1 |
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119 C b2 |
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120 C d |
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121 C ro |
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122 |
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123 Check the file permission after update |
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124 $ python $TESTTMP/show_mode.py * |
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125 a1:0644 |
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126 a2:0755 |
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127 b1:0644 |
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128 b2:0755 |
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129 d:0644 |
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130 ro:0644 |
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131 |
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132 Manually reset the mode of the read-only file |
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133 |
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134 $ chmod a-w ro |
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135 |
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136 $ python $TESTTMP/show_mode.py ro |
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137 ro:0444 |
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138 |
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139 Now the file is present, try to update and check the permissions of the file |
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140 |
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141 $ hg update -r 2 --traceback |
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142 1 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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143 |
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144 $ python $TESTTMP/show_mode.py ro |
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145 ro:0644 |
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146 |
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147 # The behavior is the same as without atomic update |