The Tor Browser: media/webrtc/trunk/testing/gtest/test/gtest_shuffle

media/webrtc/trunk/testing/gtest/test/gtest_shuffle_test.py@a63d609f5ebe (annotated)

media/webrtc/trunk/testing/gtest/test/gtest_shuffle_test.py

Thu, 15 Jan 2015 15:55:04 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:55:04 +0100
branch: TOR_BUG_9701
changeset 9: a63d609f5ebe
permissions: -rwxr-xr-x

Back out 97036ab72558 which inappropriately compared turds to third parties.

 #!/usr/bin/env python
 #
 # Copyright 2009 Google Inc. All Rights Reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
 # in the documentation and/or other materials provided with the
 # distribution.
 #     * Neither the name of Google Inc. nor the names of its
 # contributors may be used to endorse or promote products derived from
 # this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 """Verifies that test shuffling works."""
 __author__ = 'wan@google.com (Zhanyong Wan)'
 import os
 import gtest_test_utils
 # Command to run the gtest_shuffle_test_ program.
 COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_shuffle_test_')
 # The environment variables for test sharding.
 TOTAL_SHARDS_ENV_VAR = 'GTEST_TOTAL_SHARDS'
 SHARD_INDEX_ENV_VAR = 'GTEST_SHARD_INDEX'
 TEST_FILTER = 'A*.A:A*.B:C*'
 ALL_TESTS = []
 ACTIVE_TESTS = []
 FILTERED_TESTS = []
 SHARDED_TESTS = []
 SHUFFLED_ALL_TESTS = []
 SHUFFLED_ACTIVE_TESTS = []
 SHUFFLED_FILTERED_TESTS = []
 SHUFFLED_SHARDED_TESTS = []
 def AlsoRunDisabledTestsFlag():
   return '--gtest_also_run_disabled_tests'
 def FilterFlag(test_filter):
   return '--gtest_filter=%s' % (test_filter,)
 def RepeatFlag(n):
   return '--gtest_repeat=%s' % (n,)
 def ShuffleFlag():
   return '--gtest_shuffle'
 def RandomSeedFlag(n):
   return '--gtest_random_seed=%s' % (n,)
 def RunAndReturnOutput(extra_env, args):
   """Runs the test program and returns its output."""
   environ_copy = os.environ.copy()
   environ_copy.update(extra_env)
   return gtest_test_utils.Subprocess([COMMAND] + args, env=environ_copy,
                                      capture_stderr=False).output
 def GetTestsForAllIterations(extra_env, args):
   """Runs the test program and returns a list of test lists.
   Args:
     extra_env: a map from environment variables to their values
     args: command line flags to pass to gtest_shuffle_test_
   Returns:
     A list where the i-th element is the list of tests run in the i-th
     test iteration.
   """
   test_iterations = []
   for line in RunAndReturnOutput(extra_env, args).split('\n'):
     if line.startswith('----'):
       tests = []
       test_iterations.append(tests)
     elif line.strip():
       tests.append(line.strip())  # 'TestCaseName.TestName'
   return test_iterations
 def GetTestCases(tests):
   """Returns a list of test cases in the given full test names.
   Args:
     tests: a list of full test names
   Returns:
     A list of test cases from 'tests', in their original order.
     Consecutive duplicates are removed.
   """
   test_cases = []
   for test in tests:
     test_case = test.split('.')[0]
     if not test_case in test_cases:
       test_cases.append(test_case)
   return test_cases
 def CalculateTestLists():
   """Calculates the list of tests run under different flags."""
   if not ALL_TESTS:
     ALL_TESTS.extend(
         GetTestsForAllIterations({}, [AlsoRunDisabledTestsFlag()])[0])
   if not ACTIVE_TESTS:
     ACTIVE_TESTS.extend(GetTestsForAllIterations({}, [])[0])
   if not FILTERED_TESTS:
     FILTERED_TESTS.extend(
         GetTestsForAllIterations({}, [FilterFlag(TEST_FILTER)])[0])
   if not SHARDED_TESTS:
     SHARDED_TESTS.extend(
         GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
                                   SHARD_INDEX_ENV_VAR: '1'},
                                  [])[0])
   if not SHUFFLED_ALL_TESTS:
     SHUFFLED_ALL_TESTS.extend(GetTestsForAllIterations(
         {}, [AlsoRunDisabledTestsFlag(), ShuffleFlag(), RandomSeedFlag(1)])[0])
   if not SHUFFLED_ACTIVE_TESTS:
     SHUFFLED_ACTIVE_TESTS.extend(GetTestsForAllIterations(
         {}, [ShuffleFlag(), RandomSeedFlag(1)])[0])
   if not SHUFFLED_FILTERED_TESTS:
     SHUFFLED_FILTERED_TESTS.extend(GetTestsForAllIterations(
         {}, [ShuffleFlag(), RandomSeedFlag(1), FilterFlag(TEST_FILTER)])[0])
   if not SHUFFLED_SHARDED_TESTS:
     SHUFFLED_SHARDED_TESTS.extend(
         GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
                                   SHARD_INDEX_ENV_VAR: '1'},
                                  [ShuffleFlag(), RandomSeedFlag(1)])[0])
 class GTestShuffleUnitTest(gtest_test_utils.TestCase):
   """Tests test shuffling."""
   def setUp(self):
     CalculateTestLists()
   def testShufflePreservesNumberOfTests(self):
     self.assertEqual(len(ALL_TESTS), len(SHUFFLED_ALL_TESTS))
     self.assertEqual(len(ACTIVE_TESTS), len(SHUFFLED_ACTIVE_TESTS))
     self.assertEqual(len(FILTERED_TESTS), len(SHUFFLED_FILTERED_TESTS))
     self.assertEqual(len(SHARDED_TESTS), len(SHUFFLED_SHARDED_TESTS))
   def testShuffleChangesTestOrder(self):
     self.assert_(SHUFFLED_ALL_TESTS != ALL_TESTS, SHUFFLED_ALL_TESTS)
     self.assert_(SHUFFLED_ACTIVE_TESTS != ACTIVE_TESTS, SHUFFLED_ACTIVE_TESTS)
     self.assert_(SHUFFLED_FILTERED_TESTS != FILTERED_TESTS,
                  SHUFFLED_FILTERED_TESTS)
     self.assert_(SHUFFLED_SHARDED_TESTS != SHARDED_TESTS,
                  SHUFFLED_SHARDED_TESTS)
   def testShuffleChangesTestCaseOrder(self):
     self.assert_(GetTestCases(SHUFFLED_ALL_TESTS) != GetTestCases(ALL_TESTS),
                  GetTestCases(SHUFFLED_ALL_TESTS))
     self.assert_(
         GetTestCases(SHUFFLED_ACTIVE_TESTS) != GetTestCases(ACTIVE_TESTS),
         GetTestCases(SHUFFLED_ACTIVE_TESTS))
     self.assert_(
         GetTestCases(SHUFFLED_FILTERED_TESTS) != GetTestCases(FILTERED_TESTS),
         GetTestCases(SHUFFLED_FILTERED_TESTS))
     self.assert_(
         GetTestCases(SHUFFLED_SHARDED_TESTS) != GetTestCases(SHARDED_TESTS),
         GetTestCases(SHUFFLED_SHARDED_TESTS))
   def testShuffleDoesNotRepeatTest(self):
     for test in SHUFFLED_ALL_TESTS:
       self.assertEqual(1, SHUFFLED_ALL_TESTS.count(test),
                        '%s appears more than once' % (test,))
     for test in SHUFFLED_ACTIVE_TESTS:
       self.assertEqual(1, SHUFFLED_ACTIVE_TESTS.count(test),
                        '%s appears more than once' % (test,))
     for test in SHUFFLED_FILTERED_TESTS:
       self.assertEqual(1, SHUFFLED_FILTERED_TESTS.count(test),
                        '%s appears more than once' % (test,))
     for test in SHUFFLED_SHARDED_TESTS:
       self.assertEqual(1, SHUFFLED_SHARDED_TESTS.count(test),
                        '%s appears more than once' % (test,))
   def testShuffleDoesNotCreateNewTest(self):
     for test in SHUFFLED_ALL_TESTS:
       self.assert_(test in ALL_TESTS, '%s is an invalid test' % (test,))
     for test in SHUFFLED_ACTIVE_TESTS:
       self.assert_(test in ACTIVE_TESTS, '%s is an invalid test' % (test,))
     for test in SHUFFLED_FILTERED_TESTS:
       self.assert_(test in FILTERED_TESTS, '%s is an invalid test' % (test,))
     for test in SHUFFLED_SHARDED_TESTS:
       self.assert_(test in SHARDED_TESTS, '%s is an invalid test' % (test,))
   def testShuffleIncludesAllTests(self):
     for test in ALL_TESTS:
       self.assert_(test in SHUFFLED_ALL_TESTS, '%s is missing' % (test,))
     for test in ACTIVE_TESTS:
       self.assert_(test in SHUFFLED_ACTIVE_TESTS, '%s is missing' % (test,))
     for test in FILTERED_TESTS:
       self.assert_(test in SHUFFLED_FILTERED_TESTS, '%s is missing' % (test,))
     for test in SHARDED_TESTS:
       self.assert_(test in SHUFFLED_SHARDED_TESTS, '%s is missing' % (test,))
   def testShuffleLeavesDeathTestsAtFront(self):
     non_death_test_found = False
     for test in SHUFFLED_ACTIVE_TESTS:
       if 'DeathTest.' in test:
         self.assert_(not non_death_test_found,
                      '%s appears after a non-death test' % (test,))
       else:
         non_death_test_found = True
   def _VerifyTestCasesDoNotInterleave(self, tests):
     test_cases = []
     for test in tests:
       [test_case, _] = test.split('.')
       if test_cases and test_cases[-1] != test_case:
         test_cases.append(test_case)
         self.assertEqual(1, test_cases.count(test_case),
                          'Test case %s is not grouped together in %s' %
                          (test_case, tests))
   def testShuffleDoesNotInterleaveTestCases(self):
     self._VerifyTestCasesDoNotInterleave(SHUFFLED_ALL_TESTS)
     self._VerifyTestCasesDoNotInterleave(SHUFFLED_ACTIVE_TESTS)
     self._VerifyTestCasesDoNotInterleave(SHUFFLED_FILTERED_TESTS)
     self._VerifyTestCasesDoNotInterleave(SHUFFLED_SHARDED_TESTS)
   def testShuffleRestoresOrderAfterEachIteration(self):
     # Get the test lists in all 3 iterations, using random seed 1, 2,
     # and 3 respectively.  Google Test picks a different seed in each
     # iteration, and this test depends on the current implementation
     # picking successive numbers.  This dependency is not ideal, but
     # makes the test much easier to write.
     [tests_in_iteration1, tests_in_iteration2, tests_in_iteration3] = (
         GetTestsForAllIterations(
             {}, [ShuffleFlag(), RandomSeedFlag(1), RepeatFlag(3)]))
     # Make sure running the tests with random seed 1 gets the same
     # order as in iteration 1 above.
     [tests_with_seed1] = GetTestsForAllIterations(
         {}, [ShuffleFlag(), RandomSeedFlag(1)])
     self.assertEqual(tests_in_iteration1, tests_with_seed1)
     # Make sure running the tests with random seed 2 gets the same
     # order as in iteration 2 above.  Success means that Google Test
     # correctly restores the test order before re-shuffling at the
     # beginning of iteration 2.
     [tests_with_seed2] = GetTestsForAllIterations(
         {}, [ShuffleFlag(), RandomSeedFlag(2)])
     self.assertEqual(tests_in_iteration2, tests_with_seed2)
     # Make sure running the tests with random seed 3 gets the same
     # order as in iteration 3 above.  Success means that Google Test
     # correctly restores the test order before re-shuffling at the
     # beginning of iteration 3.
     [tests_with_seed3] = GetTestsForAllIterations(
         {}, [ShuffleFlag(), RandomSeedFlag(3)])
     self.assertEqual(tests_in_iteration3, tests_with_seed3)
   def testShuffleGeneratesNewOrderInEachIteration(self):
     [tests_in_iteration1, tests_in_iteration2, tests_in_iteration3] = (
         GetTestsForAllIterations(
             {}, [ShuffleFlag(), RandomSeedFlag(1), RepeatFlag(3)]))
     self.assert_(tests_in_iteration1 != tests_in_iteration2,
                  tests_in_iteration1)
     self.assert_(tests_in_iteration1 != tests_in_iteration3,
                  tests_in_iteration1)
     self.assert_(tests_in_iteration2 != tests_in_iteration3,
                  tests_in_iteration2)
   def testShuffleShardedTestsPreservesPartition(self):
     # If we run M tests on N shards, the same M tests should be run in
     # total, regardless of the random seeds used by the shards.
     [tests1] = GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
                                          SHARD_INDEX_ENV_VAR: '0'},
                                         [ShuffleFlag(), RandomSeedFlag(1)])
     [tests2] = GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
                                          SHARD_INDEX_ENV_VAR: '1'},
                                         [ShuffleFlag(), RandomSeedFlag(20)])
     [tests3] = GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
                                          SHARD_INDEX_ENV_VAR: '2'},
                                         [ShuffleFlag(), RandomSeedFlag(25)])
     sorted_sharded_tests = tests1 + tests2 + tests3
     sorted_sharded_tests.sort()
     sorted_active_tests = []
     sorted_active_tests.extend(ACTIVE_TESTS)
     sorted_active_tests.sort()
     self.assertEqual(sorted_active_tests, sorted_sharded_tests)
 if __name__ == '__main__':
   gtest_test_utils.Main()

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media/webrtc/trunk/testing/gtest/test/gtest_shuffle_test.py@a63d609f5ebe (annotated)

media/webrtc/trunk/testing/gtest/test/gtest_shuffle_test.py