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| 1 #!/usr/bin/env python | |
| 2 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 3 # Use of this source code is governed by a BSD-style license that can be | |
| 4 # found in the LICENSE file. | |
| 5 | |
| 6 """Runs a test, grab the failures and trace them.""" | |
| 7 | |
| 8 import json | |
| 9 import os | |
| 10 import subprocess | |
| 11 import sys | |
| 12 import tempfile | |
| 13 | |
| 14 import run_test_cases | |
| 15 | |
| 16 | |
| 17 XVFB_PATH = os.path.join('..', '..', 'testing', 'xvfb.py') | |
| 18 | |
| 19 | |
| 20 if sys.platform == 'win32': | |
| 21 import msvcrt # pylint: disable=F0401 | |
| 22 | |
| 23 def get_keyboard(): | |
| 24 """Returns a letter from the keyboard if any. | |
| 25 | |
| 26 This function returns immediately. | |
| 27 """ | |
| 28 if msvcrt.kbhit(): | |
| 29 return ord(msvcrt.getch()) | |
| 30 | |
| 31 else: | |
| 32 import select | |
| 33 | |
| 34 def get_keyboard(): | |
| 35 """Returns a letter from the keyboard if any, as soon as he pressed enter. | |
| 36 | |
| 37 This function returns (almost) immediately. | |
| 38 | |
| 39 The library doesn't give a way to just get the initial letter. | |
| 40 """ | |
| 41 if select.select([sys.stdin], [], [], 0.00001)[0]: | |
| 42 return sys.stdin.read(1) | |
| 43 | |
| 44 | |
| 45 def trace_and_merge(result, test): | |
| 46 """Traces a single test case and merges the result back into .isolate.""" | |
| 47 env = os.environ.copy() | |
| 48 env['RUN_TEST_CASES_RUN_ALL'] = '1' | |
| 49 | |
| 50 print 'Starting trace of %s' % test | |
| 51 subprocess.call( | |
| 52 [ | |
| 53 sys.executable, 'isolate.py', 'trace', '-r', result, | |
| 54 '--', '--gtest_filter=' + test, | |
| 55 ], | |
| 56 env=env) | |
| 57 | |
| 58 print 'Starting merge of %s' % test | |
| 59 return not subprocess.call( | |
| 60 [sys.executable, 'isolate.py', 'merge', '-r', result]) | |
| 61 | |
| 62 | |
| 63 def run_all(result, shard_index, shard_count): | |
| 64 """Runs all the tests. Returns the tests that failed or None on failure. | |
| 65 | |
| 66 Assumes run_test_cases.py is implicitly called. | |
| 67 """ | |
| 68 handle, result_file = tempfile.mkstemp(prefix='run_test_cases') | |
| 69 os.close(handle) | |
| 70 env = os.environ.copy() | |
| 71 env['RUN_TEST_CASES_RESULT_FILE'] = result_file | |
| 72 env['RUN_TEST_CASES_RUN_ALL'] = '1' | |
| 73 env['GTEST_SHARD_INDEX'] = str(shard_index) | |
| 74 env['GTEST_TOTAL_SHARDS'] = str(shard_count) | |
| 75 cmd = [sys.executable, 'isolate.py', 'run', '-r', result] | |
| 76 subprocess.call(cmd, env=env) | |
| 77 if not os.path.isfile(result_file): | |
| 78 print >> sys.stderr, 'Failed to find %s' % result_file | |
| 79 return None | |
| 80 with open(result_file) as f: | |
| 81 try: | |
| 82 data = json.load(f) | |
| 83 except ValueError as e: | |
| 84 print >> sys.stderr, ('Unable to load json file, %s: %s' % | |
| 85 (result_file, str(e))) | |
| 86 return None | |
| 87 os.remove(result_file) | |
| 88 return [ | |
| 89 test for test, runs in data.iteritems() | |
| 90 if not any(not run['returncode'] for run in runs) | |
| 91 ] | |
| 92 | |
| 93 | |
| 94 def run(result, test): | |
| 95 """Runs a single test case in an isolated environment. | |
| 96 | |
| 97 Returns True if the test passed. | |
| 98 """ | |
| 99 return not subprocess.call([ | |
| 100 sys.executable, 'isolate.py', 'run', '-r', result, | |
| 101 '--', '--gtest_filter=' + test, | |
| 102 ]) | |
| 103 | |
| 104 | |
| 105 def run_normally(executable, test): | |
| 106 return not subprocess.call([ | |
| 107 sys.executable, XVFB_PATH, os.path.dirname(executable), executable, | |
| 108 '--gtest_filter=' + test]) | |
| 109 | |
| 110 | |
| 111 def diff_and_commit(test): | |
| 112 """Prints the diff and commit.""" | |
| 113 subprocess.call(['git', 'diff']) | |
| 114 subprocess.call(['git', 'commit', '-a', '-m', test]) | |
| 115 | |
| 116 | |
| 117 def trace_and_verify(result, test): | |
| 118 """Traces a test case, updates .isolate and makes sure it passes afterward. | |
| 119 | |
| 120 Return None if the test was already passing, True on success. | |
| 121 """ | |
| 122 trace_and_merge(result, test) | |
| 123 diff_and_commit(test) | |
| 124 print 'Verifying trace...' | |
| 125 return run(result, test) | |
| 126 | |
| 127 | |
| 128 def fix_all(result, shard_index, shard_count, executable): | |
| 129 """Runs all the test cases in a gtest executable and trace the failing tests. | |
| 130 | |
| 131 Returns True on success. | |
| 132 | |
| 133 Makes sure the test passes afterward. | |
| 134 """ | |
| 135 # These could have adverse side-effects. | |
| 136 # TODO(maruel): Be more intelligent about it, for now be safe. | |
| 137 run_test_cases_env = ['RUN_TEST_CASES_RESULT_FILE', 'RUN_TEST_CASES_RUN_ALL'] | |
| 138 for i in run_test_cases.KNOWN_GTEST_ENV_VARS + run_test_cases_env: | |
| 139 if i in os.environ: | |
| 140 print >> 'Please unset %s' % i | |
| 141 return False | |
| 142 | |
| 143 test_cases = run_all(result, shard_index, shard_count) | |
| 144 if test_cases is None: | |
| 145 return False | |
| 146 | |
| 147 print '\nFound %d broken test cases.' % len(test_cases) | |
| 148 if not test_cases: | |
| 149 return True | |
| 150 | |
| 151 failed_alone = [] | |
| 152 failures = [] | |
| 153 fixed_tests = [] | |
| 154 try: | |
| 155 for index, test_case in enumerate(test_cases): | |
| 156 if get_keyboard(): | |
| 157 # Return early. | |
| 158 return True | |
| 159 | |
| 160 try: | |
| 161 # Check if the test passes normally, because otherwise there is no | |
| 162 # reason to trace its failure. | |
| 163 if not run_normally(executable, test_case): | |
| 164 print '%s is broken when run alone, please fix the test.' % test_case | |
| 165 failed_alone.append(test_case) | |
| 166 continue | |
| 167 | |
| 168 if not trace_and_verify(result, test_case): | |
| 169 failures.append(test_case) | |
| 170 print 'Failed to fix %s' % test_case | |
| 171 else: | |
| 172 fixed_tests.append(test_case) | |
| 173 except: # pylint: disable=W0702 | |
| 174 failures.append(test_case) | |
| 175 print 'Failed to fix %s' % test_case | |
| 176 print '%d/%d' % (index+1, len(test_cases)) | |
| 177 finally: | |
| 178 print 'Test cases fixed (%d):' % len(fixed_tests) | |
| 179 for fixed_test in fixed_tests: | |
| 180 print ' %s' % fixed_test | |
| 181 print '' | |
| 182 | |
| 183 print 'Test cases still failing (%d):' % len(failures) | |
| 184 for failure in failures: | |
| 185 print ' %s' % failure | |
| 186 | |
| 187 if failed_alone: | |
| 188 print ('Test cases that failed normally when run alone (%d):' % | |
| 189 len(failed_alone)) | |
| 190 for failed in failed_alone: | |
| 191 print failed | |
| 192 return not failures | |
| 193 | |
| 194 | |
| 195 def main(): | |
| 196 parser = run_test_cases.OptionParserWithTestSharding( | |
| 197 usage='%prog <option> [test]') | |
| 198 parser.add_option('-d', '--dir', default='../../out/Release', | |
| 199 help='The directory containing the the test executable and ' | |
| 200 'result file. Defaults to %default') | |
| 201 options, args = parser.parse_args() | |
| 202 | |
| 203 if len(args) != 1: | |
| 204 parser.error('Use with the name of the test only, e.g. unit_tests') | |
| 205 | |
| 206 basename = args[0] | |
| 207 executable = os.path.join(options.dir, basename) | |
| 208 result = '%s.results' % executable | |
| 209 if sys.platform in('win32', 'cygwin'): | |
| 210 executable += '.exe' | |
| 211 if not os.path.isfile(executable): | |
| 212 print >> sys.stderr, ( | |
| 213 '%s doesn\'t exist, please build %s_run' % (executable, basename)) | |
| 214 return 1 | |
| 215 if not os.path.isfile(result): | |
| 216 print >> sys.stderr, ( | |
| 217 '%s doesn\'t exist, please build %s_run' % (result, basename)) | |
| 218 return 1 | |
| 219 | |
| 220 return not fix_all(result, options.index, options.shards, executable) | |
| 221 | |
| 222 | |
| 223 if __name__ == '__main__': | |
| 224 sys.exit(main()) | |
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Chromium Code Reviews
Issue 11045023:
Move src/tools/isolate to src/tools/swarm_client as a DEPS. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src