Mercurial > hg
annotate tests/test-verify-repo-operations.py @ 34980:705d0f2bb677 stable
pathutil: add doctests for canonpath()
This is a followup to f445b10dc7fb. Since there's no way to ensure that more
drive letters than C: exist, this seems like the only way to test it. This is
enough to catch the f445b10dc7fb scenario, as well as CWD outside of the repo
when the path isn't prefixed with path/to/repo.
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Fri, 03 Nov 2017 22:22:50 -0400 |
parents | 8b90367c4cf3 |
children | 2372284d9457 |
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1 from __future__ import print_function, absolute_import |
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2 |
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3 """Fuzz testing for operations against a Mercurial repository |
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4 |
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5 This uses Hypothesis's stateful testing to generate random repository |
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6 operations and test Mercurial using them, both to see if there are any |
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7 unexpected errors and to compare different versions of it.""" |
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8 |
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9 import os |
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10 import subprocess |
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11 import sys |
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12 |
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13 # Only run if slow tests are allowed |
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14 if subprocess.call(['python', '%s/hghave' % os.environ['TESTDIR'], |
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15 'slow']): |
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16 sys.exit(80) |
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17 |
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18 # These tests require Hypothesis and pytz to be installed. |
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19 # Running 'pip install hypothesis pytz' will achieve that. |
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20 # Note: This won't work if you're running Python < 2.7. |
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21 try: |
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22 from hypothesis.extra.datetime import datetimes |
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23 except ImportError: |
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24 sys.stderr.write("skipped: hypothesis or pytz not installed" + os.linesep) |
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25 sys.exit(80) |
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26 |
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27 # If you are running an old version of pip you may find that the enum34 |
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28 # backport is not installed automatically. If so 'pip install enum34' will |
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29 # fix this problem. |
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30 try: |
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31 import enum |
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32 assert enum # Silence pyflakes |
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33 except ImportError: |
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34 sys.stderr.write("skipped: enum34 not installed" + os.linesep) |
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35 sys.exit(80) |
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36 |
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37 import binascii |
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38 from contextlib import contextmanager |
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39 import errno |
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40 import pipes |
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41 import shutil |
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42 import silenttestrunner |
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43 import subprocess |
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44 |
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45 from hypothesis.errors import HypothesisException |
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46 from hypothesis.stateful import ( |
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47 rule, RuleBasedStateMachine, Bundle, precondition) |
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48 from hypothesis import settings, note, strategies as st |
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49 from hypothesis.configuration import set_hypothesis_home_dir |
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50 from hypothesis.database import ExampleDatabase |
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51 |
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52 testdir = os.path.abspath(os.environ["TESTDIR"]) |
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53 |
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54 # We store Hypothesis examples here rather in the temporary test directory |
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55 # so that when rerunning a failing test this always results in refinding the |
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56 # previous failure. This directory is in .hgignore and should not be checked in |
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57 # but is useful to have for development. |
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58 set_hypothesis_home_dir(os.path.join(testdir, ".hypothesis")) |
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59 |
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60 runtests = os.path.join(os.environ["RUNTESTDIR"], "run-tests.py") |
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61 testtmp = os.environ["TESTTMP"] |
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62 assert os.path.isdir(testtmp) |
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63 |
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64 generatedtests = os.path.join(testdir, "hypothesis-generated") |
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65 |
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66 try: |
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67 os.makedirs(generatedtests) |
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68 except OSError: |
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69 pass |
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70 |
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71 # We write out generated .t files to a file in order to ease debugging and to |
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72 # give a starting point for turning failures Hypothesis finds into normal |
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73 # tests. In order to ensure that multiple copies of this test can be run in |
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74 # parallel we use atomic file create to ensure that we always get a unique |
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75 # name. |
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76 file_index = 0 |
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77 while True: |
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78 file_index += 1 |
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79 savefile = os.path.join(generatedtests, "test-generated-%d.t" % ( |
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80 file_index, |
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81 )) |
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82 try: |
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83 os.close(os.open(savefile, os.O_CREAT | os.O_EXCL | os.O_WRONLY)) |
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84 break |
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85 except OSError as e: |
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86 if e.errno != errno.EEXIST: |
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87 raise |
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88 assert os.path.exists(savefile) |
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89 |
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90 hgrc = os.path.join(".hg", "hgrc") |
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91 |
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92 filecharacters = ( |
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93 "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" |
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94 "[]^_`;=@{}~ !#$%&'()+,-" |
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95 ) |
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96 |
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97 files = st.text(filecharacters, min_size=1).map(lambda x: x.strip()).filter( |
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98 bool).map(lambda s: s.encode('ascii')) |
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99 |
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100 safetext = st.text(st.characters( |
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101 min_codepoint=1, max_codepoint=127, |
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102 blacklist_categories=('Cc', 'Cs')), min_size=1).map( |
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103 lambda s: s.encode('utf-8') |
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104 ) |
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105 |
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106 extensions = st.sampled_from(('shelve', 'mq', 'blackbox',)) |
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107 |
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108 @contextmanager |
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109 def acceptableerrors(*args): |
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110 """Sometimes we know an operation we're about to perform might fail, and |
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111 we're OK with some of the failures. In those cases this may be used as a |
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112 context manager and will swallow expected failures, as identified by |
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113 substrings of the error message Mercurial emits.""" |
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114 try: |
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115 yield |
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116 except subprocess.CalledProcessError as e: |
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117 if not any(a in e.output for a in args): |
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118 note(e.output) |
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119 raise |
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120 |
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121 reponames = st.text("abcdefghijklmnopqrstuvwxyz01234556789", min_size=1).map( |
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122 lambda s: s.encode('ascii') |
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123 ) |
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124 |
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125 class verifyingstatemachine(RuleBasedStateMachine): |
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126 """This defines the set of acceptable operations on a Mercurial repository |
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127 using Hypothesis's RuleBasedStateMachine. |
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128 |
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129 The general concept is that we manage multiple repositories inside a |
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130 repos/ directory in our temporary test location. Some of these are freshly |
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131 inited, some are clones of the others. Our current working directory is |
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132 always inside one of these repositories while the tests are running. |
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133 |
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134 Hypothesis then performs a series of operations against these repositories, |
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135 including hg commands, generating contents and editing the .hgrc file. |
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136 If these operations fail in unexpected ways or behave differently in |
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137 different configurations of Mercurial, the test will fail and a minimized |
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138 .t test file will be written to the hypothesis-generated directory to |
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139 exhibit that failure. |
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140 |
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141 Operations are defined as methods with @rule() decorators. See the |
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142 Hypothesis documentation at |
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143 http://hypothesis.readthedocs.org/en/release/stateful.html for more |
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144 details.""" |
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145 |
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146 # A bundle is a reusable collection of previously generated data which may |
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147 # be provided as arguments to future operations. |
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148 repos = Bundle('repos') |
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149 paths = Bundle('paths') |
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150 contents = Bundle('contents') |
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151 branches = Bundle('branches') |
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152 committimes = Bundle('committimes') |
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153 |
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154 def __init__(self): |
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155 super(verifyingstatemachine, self).__init__() |
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156 self.repodir = os.path.join(testtmp, "repos") |
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157 if os.path.exists(self.repodir): |
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158 shutil.rmtree(self.repodir) |
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159 os.chdir(testtmp) |
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160 self.log = [] |
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161 self.failed = False |
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162 self.configperrepo = {} |
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163 self.all_extensions = set() |
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164 self.non_skippable_extensions = set() |
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165 |
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166 self.mkdirp("repos") |
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167 self.cd("repos") |
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168 self.mkdirp("repo1") |
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169 self.cd("repo1") |
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170 self.hg("init") |
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171 |
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172 def teardown(self): |
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173 """On teardown we clean up after ourselves as usual, but we also |
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174 do some additional testing: We generate a .t file based on our test |
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175 run using run-test.py -i to get the correct output. |
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176 |
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177 We then test it in a number of other configurations, verifying that |
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178 each passes the same test.""" |
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179 super(verifyingstatemachine, self).teardown() |
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180 try: |
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181 shutil.rmtree(self.repodir) |
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182 except OSError: |
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183 pass |
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184 ttest = os.linesep.join(" " + l for l in self.log) |
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185 os.chdir(testtmp) |
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186 path = os.path.join(testtmp, "test-generated.t") |
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187 with open(path, 'w') as o: |
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188 o.write(ttest + os.linesep) |
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189 with open(os.devnull, "w") as devnull: |
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190 rewriter = subprocess.Popen( |
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191 [runtests, "--local", "-i", path], stdin=subprocess.PIPE, |
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192 stdout=devnull, stderr=devnull, |
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193 ) |
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194 rewriter.communicate("yes") |
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195 with open(path, 'r') as i: |
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196 ttest = i.read() |
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197 |
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198 e = None |
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199 if not self.failed: |
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200 try: |
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201 output = subprocess.check_output([ |
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202 runtests, path, "--local", "--pure" |
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203 ], stderr=subprocess.STDOUT) |
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204 assert "Ran 1 test" in output, output |
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205 for ext in ( |
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206 self.all_extensions - self.non_skippable_extensions |
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207 ): |
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208 tf = os.path.join(testtmp, "test-generated-no-%s.t" % ( |
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209 ext, |
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210 )) |
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211 with open(tf, 'w') as o: |
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212 for l in ttest.splitlines(): |
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213 if l.startswith(" $ hg"): |
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214 l = l.replace( |
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215 "--config %s=" % ( |
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216 extensionconfigkey(ext),), "") |
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217 o.write(l + os.linesep) |
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218 with open(tf, 'r') as r: |
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219 t = r.read() |
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220 assert ext not in t, t |
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221 output = subprocess.check_output([ |
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222 runtests, tf, "--local", |
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223 ], stderr=subprocess.STDOUT) |
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224 assert "Ran 1 test" in output, output |
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225 except subprocess.CalledProcessError as e: |
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226 note(e.output) |
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227 if self.failed or e is not None: |
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228 with open(savefile, "wb") as o: |
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229 o.write(ttest) |
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230 if e is not None: |
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231 raise e |
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232 |
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233 def execute_step(self, step): |
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234 try: |
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235 return super(verifyingstatemachine, self).execute_step(step) |
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236 except (HypothesisException, KeyboardInterrupt): |
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237 raise |
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238 except Exception: |
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239 self.failed = True |
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240 raise |
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241 |
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242 # Section: Basic commands. |
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243 def mkdirp(self, path): |
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244 if os.path.exists(path): |
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245 return |
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246 self.log.append( |
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247 "$ mkdir -p -- %s" % (pipes.quote(os.path.relpath(path)),)) |
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248 os.makedirs(path) |
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249 |
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250 def cd(self, path): |
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251 path = os.path.relpath(path) |
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252 if path == ".": |
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253 return |
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254 os.chdir(path) |
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255 self.log.append("$ cd -- %s" % (pipes.quote(path),)) |
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256 |
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257 def hg(self, *args): |
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258 extra_flags = [] |
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259 for key, value in self.config.items(): |
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260 extra_flags.append("--config") |
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261 extra_flags.append("%s=%s" % (key, value)) |
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262 self.command("hg", *(tuple(extra_flags) + args)) |
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263 |
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264 def command(self, *args): |
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265 self.log.append("$ " + ' '.join(map(pipes.quote, args))) |
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266 subprocess.check_output(args, stderr=subprocess.STDOUT) |
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267 |
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268 # Section: Set up basic data |
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269 # This section has no side effects but generates data that we will want |
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270 # to use later. |
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271 @rule( |
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272 target=paths, |
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273 source=st.lists(files, min_size=1).map(lambda l: os.path.join(*l))) |
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274 def genpath(self, source): |
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275 return source |
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276 |
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277 @rule( |
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278 target=committimes, |
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279 when=datetimes(min_year=1970, max_year=2038) | st.none()) |
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280 def gentime(self, when): |
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281 return when |
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282 |
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283 @rule( |
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284 target=contents, |
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285 content=st.one_of( |
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286 st.binary(), |
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287 st.text().map(lambda x: x.encode('utf-8')) |
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288 )) |
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289 def gencontent(self, content): |
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290 return content |
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291 |
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292 @rule( |
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293 target=branches, |
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294 name=safetext, |
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295 ) |
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296 def genbranch(self, name): |
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297 return name |
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298 |
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299 @rule(target=paths, source=paths) |
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300 def lowerpath(self, source): |
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301 return source.lower() |
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302 |
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303 @rule(target=paths, source=paths) |
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304 def upperpath(self, source): |
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305 return source.upper() |
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306 |
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307 # Section: Basic path operations |
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308 @rule(path=paths, content=contents) |
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309 def writecontent(self, path, content): |
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310 self.unadded_changes = True |
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311 if os.path.isdir(path): |
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312 return |
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313 parent = os.path.dirname(path) |
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314 if parent: |
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315 try: |
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316 self.mkdirp(parent) |
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317 except OSError: |
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318 # It may be the case that there is a regular file that has |
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319 # previously been created that has the same name as an ancestor |
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320 # of the current path. This will cause mkdirp to fail with this |
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321 # error. We just turn this into a no-op in that case. |
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322 return |
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323 with open(path, 'wb') as o: |
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324 o.write(content) |
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325 self.log.append(( |
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326 "$ python -c 'import binascii; " |
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327 "print(binascii.unhexlify(\"%s\"))' > %s") % ( |
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328 binascii.hexlify(content), |
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329 pipes.quote(path), |
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330 )) |
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331 |
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332 @rule(path=paths) |
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333 def addpath(self, path): |
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334 if os.path.exists(path): |
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335 self.hg("add", "--", path) |
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336 |
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337 @rule(path=paths) |
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338 def forgetpath(self, path): |
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339 if os.path.exists(path): |
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340 with acceptableerrors( |
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341 "file is already untracked", |
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342 ): |
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343 self.hg("forget", "--", path) |
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344 |
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345 @rule(s=st.none() | st.integers(0, 100)) |
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346 def addremove(self, s): |
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347 args = ["addremove"] |
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348 if s is not None: |
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349 args.extend(["-s", str(s)]) |
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350 self.hg(*args) |
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351 |
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352 @rule(path=paths) |
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353 def removepath(self, path): |
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354 if os.path.exists(path): |
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355 with acceptableerrors( |
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356 'file is untracked', |
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357 'file has been marked for add', |
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358 'file is modified', |
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359 ): |
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360 self.hg("remove", "--", path) |
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361 |
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362 @rule( |
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363 message=safetext, |
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364 amend=st.booleans(), |
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365 when=committimes, |
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366 addremove=st.booleans(), |
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367 secret=st.booleans(), |
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368 close_branch=st.booleans(), |
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369 ) |
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370 def maybecommit( |
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371 self, message, amend, when, addremove, secret, close_branch |
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372 ): |
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373 command = ["commit"] |
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374 errors = ["nothing changed"] |
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375 if amend: |
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376 errors.append("cannot amend public changesets") |
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377 command.append("--amend") |
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378 command.append("-m" + pipes.quote(message)) |
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379 if secret: |
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380 command.append("--secret") |
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381 if close_branch: |
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382 command.append("--close-branch") |
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383 errors.append("can only close branch heads") |
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384 if addremove: |
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385 command.append("--addremove") |
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386 if when is not None: |
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387 if when.year == 1970: |
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388 errors.append('negative date value') |
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389 if when.year == 2038: |
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390 errors.append('exceeds 32 bits') |
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391 command.append("--date=%s" % ( |
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392 when.strftime('%Y-%m-%d %H:%M:%S %z'),)) |
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393 |
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394 with acceptableerrors(*errors): |
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395 self.hg(*command) |
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396 |
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397 # Section: Repository management |
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398 @property |
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399 def currentrepo(self): |
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400 return os.path.basename(os.getcwd()) |
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401 |
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402 @property |
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403 def config(self): |
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404 return self.configperrepo.setdefault(self.currentrepo, {}) |
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405 |
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406 @rule( |
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407 target=repos, |
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408 source=repos, |
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409 name=reponames, |
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410 ) |
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411 def clone(self, source, name): |
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412 if not os.path.exists(os.path.join("..", name)): |
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413 self.cd("..") |
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414 self.hg("clone", source, name) |
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415 self.cd(name) |
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416 return name |
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417 |
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418 @rule( |
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419 target=repos, |
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420 name=reponames, |
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421 ) |
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422 def fresh(self, name): |
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423 if not os.path.exists(os.path.join("..", name)): |
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424 self.cd("..") |
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425 self.mkdirp(name) |
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426 self.cd(name) |
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427 self.hg("init") |
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428 return name |
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429 |
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430 @rule(name=repos) |
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431 def switch(self, name): |
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432 self.cd(os.path.join("..", name)) |
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433 assert self.currentrepo == name |
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434 assert os.path.exists(".hg") |
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435 |
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436 @rule(target=repos) |
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437 def origin(self): |
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438 return "repo1" |
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439 |
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440 @rule() |
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441 def pull(self, repo=repos): |
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442 with acceptableerrors( |
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443 "repository default not found", |
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444 "repository is unrelated", |
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445 ): |
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446 self.hg("pull") |
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447 |
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448 @rule(newbranch=st.booleans()) |
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449 def push(self, newbranch): |
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450 with acceptableerrors( |
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451 "default repository not configured", |
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452 "no changes found", |
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453 ): |
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454 if newbranch: |
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455 self.hg("push", "--new-branch") |
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456 else: |
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457 with acceptableerrors( |
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458 "creates new branches" |
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459 ): |
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460 self.hg("push") |
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461 |
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462 # Section: Simple side effect free "check" operations |
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463 @rule() |
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464 def log(self): |
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465 self.hg("log") |
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466 |
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467 @rule() |
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468 def verify(self): |
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469 self.hg("verify") |
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470 |
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471 @rule() |
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472 def diff(self): |
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473 self.hg("diff", "--nodates") |
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474 |
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475 @rule() |
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476 def status(self): |
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477 self.hg("status") |
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478 |
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479 @rule() |
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480 def export(self): |
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481 self.hg("export") |
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482 |
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483 # Section: Branch management |
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484 @rule() |
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485 def checkbranch(self): |
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486 self.hg("branch") |
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487 |
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488 @rule(branch=branches) |
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489 def switchbranch(self, branch): |
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490 with acceptableerrors( |
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491 'cannot use an integer as a name', |
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492 'cannot be used in a name', |
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493 'a branch of the same name already exists', |
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494 'is reserved', |
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495 ): |
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496 self.hg("branch", "--", branch) |
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497 |
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498 @rule(branch=branches, clean=st.booleans()) |
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499 def update(self, branch, clean): |
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500 with acceptableerrors( |
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501 'unknown revision', |
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502 'parse error', |
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503 ): |
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504 if clean: |
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505 self.hg("update", "-C", "--", branch) |
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506 else: |
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507 self.hg("update", "--", branch) |
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508 |
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509 # Section: Extension management |
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510 def hasextension(self, extension): |
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511 return extensionconfigkey(extension) in self.config |
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512 |
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513 def commandused(self, extension): |
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514 assert extension in self.all_extensions |
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515 self.non_skippable_extensions.add(extension) |
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516 |
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517 @rule(extension=extensions) |
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518 def addextension(self, extension): |
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519 self.all_extensions.add(extension) |
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520 self.config[extensionconfigkey(extension)] = "" |
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521 |
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522 @rule(extension=extensions) |
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523 def removeextension(self, extension): |
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524 self.config.pop(extensionconfigkey(extension), None) |
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525 |
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526 # Section: Commands from the shelve extension |
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527 @rule() |
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528 @precondition(lambda self: self.hasextension("shelve")) |
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529 def shelve(self): |
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530 self.commandused("shelve") |
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531 with acceptableerrors("nothing changed"): |
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532 self.hg("shelve") |
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533 |
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534 @rule() |
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535 @precondition(lambda self: self.hasextension("shelve")) |
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536 def unshelve(self): |
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537 self.commandused("shelve") |
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538 with acceptableerrors("no shelved changes to apply"): |
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539 self.hg("unshelve") |
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540 |
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541 class writeonlydatabase(ExampleDatabase): |
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542 def __init__(self, underlying): |
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543 super(ExampleDatabase, self).__init__() |
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544 self.underlying = underlying |
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545 |
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546 def fetch(self, key): |
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547 return () |
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548 |
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549 def save(self, key, value): |
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550 self.underlying.save(key, value) |
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551 |
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552 def delete(self, key, value): |
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553 self.underlying.delete(key, value) |
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554 |
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555 def close(self): |
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556 self.underlying.close() |
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557 |
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558 def extensionconfigkey(extension): |
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559 return "extensions." + extension |
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560 |
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561 settings.register_profile( |
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562 'default', settings( |
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563 timeout=300, |
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564 stateful_step_count=50, |
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565 max_examples=10, |
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566 ) |
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567 ) |
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568 |
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569 settings.register_profile( |
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570 'fast', settings( |
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571 timeout=10, |
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572 stateful_step_count=20, |
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573 max_examples=5, |
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574 min_satisfying_examples=1, |
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575 max_shrinks=0, |
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576 ) |
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577 ) |
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578 |
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579 settings.register_profile( |
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580 'continuous', settings( |
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581 timeout=-1, |
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582 stateful_step_count=1000, |
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583 max_examples=10 ** 8, |
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584 max_iterations=10 ** 8, |
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585 database=writeonlydatabase(settings.default.database) |
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586 ) |
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587 ) |
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588 |
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589 settings.load_profile(os.getenv('HYPOTHESIS_PROFILE', 'default')) |
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590 |
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591 verifyingtest = verifyingstatemachine.TestCase |
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592 |
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593 verifyingtest.settings = settings.default |
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594 |
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595 if __name__ == '__main__': |
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596 try: |
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597 silenttestrunner.main(__name__) |
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598 finally: |
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599 # So as to prevent proliferation of useless test files, if we never |
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600 # actually wrote a failing test we clean up after ourselves and delete |
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601 # the file for doing so that we owned. |
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602 if os.path.exists(savefile) and os.path.getsize(savefile) == 0: |
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603 os.unlink(savefile) |