Mercurial > hg
annotate tests/test-util.py @ 47067:ea563187ee7c stable
tests: change the fixer commands to use the buffer attribute on stdio objects
Otherwise `\r` was getting injected into the fixed lines and throwing off the
commit hashes on Windows when the fixer is invoked with py3.
Differential Revision: https://phab.mercurial-scm.org/D10637
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Sun, 02 May 2021 16:56:20 -0400 |
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1 # unit tests for mercuril.util utilities |
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2 from __future__ import absolute_import |
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3 |
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4 import contextlib |
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5 import itertools |
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6 import unittest |
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7 |
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8 from mercurial import pycompat, util, utils |
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9 |
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10 |
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11 @contextlib.contextmanager |
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12 def mocktimer(incr=0.1, *additional_targets): |
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13 """Replaces util.timer and additional_targets with a mock |
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14 |
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15 The timer starts at 0. On each call the time incremented by the value |
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16 of incr. If incr is an iterable, then the time is incremented by the |
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17 next value from that iterable, looping in a cycle when reaching the end. |
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18 |
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19 additional_targets must be a sequence of (object, attribute_name) tuples; |
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20 the mock is set with setattr(object, attribute_name, mock). |
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21 |
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22 """ |
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23 time = [0] |
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24 try: |
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25 incr = itertools.cycle(incr) |
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26 except TypeError: |
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27 incr = itertools.repeat(incr) |
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28 |
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29 def timer(): |
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30 time[0] += next(incr) |
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31 return time[0] |
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32 |
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33 # record original values |
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34 orig = util.timer |
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35 additional_origs = [(o, a, getattr(o, a)) for o, a in additional_targets] |
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36 |
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37 # mock out targets |
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38 util.timer = timer |
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39 for obj, attr in additional_targets: |
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40 setattr(obj, attr, timer) |
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41 |
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42 try: |
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43 yield |
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44 finally: |
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45 # restore originals |
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46 util.timer = orig |
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47 for args in additional_origs: |
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48 setattr(*args) |
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49 |
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50 |
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51 # attr.s default factory for util.timedstats.start binds the timer we |
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52 # need to mock out. |
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53 _start_default = (util.timedcmstats.start.default, 'factory') |
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54 |
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55 |
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56 @contextlib.contextmanager |
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57 def capturestderr(): |
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58 """Replace utils.procutil.stderr with a pycompat.bytesio instance |
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59 |
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60 The instance is made available as the return value of __enter__. |
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61 |
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62 This contextmanager is reentrant. |
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63 |
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64 """ |
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65 orig = utils.procutil.stderr |
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66 utils.procutil.stderr = pycompat.bytesio() |
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67 try: |
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68 yield utils.procutil.stderr |
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69 finally: |
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70 utils.procutil.stderr = orig |
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71 |
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72 |
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73 class timedtests(unittest.TestCase): |
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74 def testtimedcmstatsstr(self): |
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75 stats = util.timedcmstats() |
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76 self.assertEqual(str(stats), '<unknown>') |
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77 self.assertEqual(bytes(stats), b'<unknown>') |
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78 stats.elapsed = 12.34 |
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79 self.assertEqual(str(stats), pycompat.sysstr(util.timecount(12.34))) |
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80 self.assertEqual(bytes(stats), util.timecount(12.34)) |
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81 |
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82 def testtimedcmcleanexit(self): |
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83 # timestamps 1, 4, elapsed time of 4 - 1 = 3 |
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84 with mocktimer([1, 3], _start_default): |
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85 with util.timedcm('pass') as stats: |
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86 # actual context doesn't matter |
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87 pass |
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88 |
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89 self.assertEqual(stats.start, 1) |
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90 self.assertEqual(stats.elapsed, 3) |
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91 self.assertEqual(stats.level, 1) |
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92 |
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93 def testtimedcmnested(self): |
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94 # timestamps 1, 3, 6, 10, elapsed times of 6 - 3 = 3 and 10 - 1 = 9 |
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95 with mocktimer([1, 2, 3, 4], _start_default): |
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96 with util.timedcm('outer') as outer_stats: |
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97 with util.timedcm('inner') as inner_stats: |
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98 # actual context doesn't matter |
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99 pass |
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100 |
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101 self.assertEqual(outer_stats.start, 1) |
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102 self.assertEqual(outer_stats.elapsed, 9) |
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103 self.assertEqual(outer_stats.level, 1) |
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104 |
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105 self.assertEqual(inner_stats.start, 3) |
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106 self.assertEqual(inner_stats.elapsed, 3) |
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107 self.assertEqual(inner_stats.level, 2) |
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108 |
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109 def testtimedcmexception(self): |
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110 # timestamps 1, 4, elapsed time of 4 - 1 = 3 |
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111 with mocktimer([1, 3], _start_default): |
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112 try: |
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113 with util.timedcm('exceptional') as stats: |
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114 raise ValueError() |
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115 except ValueError: |
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116 pass |
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117 |
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118 self.assertEqual(stats.start, 1) |
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119 self.assertEqual(stats.elapsed, 3) |
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120 self.assertEqual(stats.level, 1) |
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121 |
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122 def testtimeddecorator(self): |
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123 @util.timed |
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124 def testfunc(callcount=1): |
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125 callcount -= 1 |
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126 if callcount: |
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127 testfunc(callcount) |
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128 |
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129 # timestamps 1, 2, 3, 4, elapsed time of 3 - 2 = 1 and 4 - 1 = 3 |
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130 with mocktimer(1, _start_default): |
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131 with capturestderr() as out: |
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132 testfunc(2) |
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133 |
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134 self.assertEqual( |
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135 out.getvalue(), |
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136 (b' testfunc: 1.000 s\n' b' testfunc: 3.000 s\n'), |
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137 ) |
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138 |
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139 |
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140 if __name__ == '__main__': |
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141 import silenttestrunner |
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142 |
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143 silenttestrunner.main(__name__) |