bool UnitTestImpl::RunAllTests()

in ext/gtest-1.8.0/googletest/src/gtest.cc [4551:4687]

• 73 lines of code
• 18 McCabe index (conditional complexity)

bool UnitTestImpl::RunAllTests() {
  // Makes sure InitGoogleTest() was called.
  if (!GTestIsInitialized()) {
    printf("%s",
           "\nThis test program did NOT call ::testing::InitGoogleTest "
           "before calling RUN_ALL_TESTS().  Please fix it.\n");
    return false;
  }

  // Do not run any test if the --help flag was specified.
  if (g_help_flag)
    return true;

  // Repeats the call to the post-flag parsing initialization in case the
  // user didn't call InitGoogleTest.
  PostFlagParsingInit();

  // Even if sharding is not on, test runners may want to use the
  // GTEST_SHARD_STATUS_FILE to query whether the test supports the sharding
  // protocol.
  internal::WriteToShardStatusFileIfNeeded();

  // True iff we are in a subprocess for running a thread-safe-style
  // death test.
  bool in_subprocess_for_death_test = false;

#if GTEST_HAS_DEATH_TEST
  in_subprocess_for_death_test = (internal_run_death_test_flag_.get() != NULL);
# if defined(GTEST_EXTRA_DEATH_TEST_CHILD_SETUP_)
  if (in_subprocess_for_death_test) {
    GTEST_EXTRA_DEATH_TEST_CHILD_SETUP_();
  }
# endif  // defined(GTEST_EXTRA_DEATH_TEST_CHILD_SETUP_)
#endif  // GTEST_HAS_DEATH_TEST

  const bool should_shard = ShouldShard(kTestTotalShards, kTestShardIndex,
                                        in_subprocess_for_death_test);

  // Compares the full test names with the filter to decide which
  // tests to run.
  const bool has_tests_to_run = FilterTests(should_shard
                                              ? HONOR_SHARDING_PROTOCOL
                                              : IGNORE_SHARDING_PROTOCOL) > 0;

  // Lists the tests and exits if the --gtest_list_tests flag was specified.
  if (GTEST_FLAG(list_tests)) {
    // This must be called *after* FilterTests() has been called.
    ListTestsMatchingFilter();
    return true;
  }

  random_seed_ = GTEST_FLAG(shuffle) ?
      GetRandomSeedFromFlag(GTEST_FLAG(random_seed)) : 0;

  // True iff at least one test has failed.
  bool failed = false;

  TestEventListener* repeater = listeners()->repeater();

  start_timestamp_ = GetTimeInMillis();
  repeater->OnTestProgramStart(*parent_);

  // How many times to repeat the tests?  We don't want to repeat them
  // when we are inside the subprocess of a death test.
  const int repeat = in_subprocess_for_death_test ? 1 : GTEST_FLAG(repeat);
  // Repeats forever if the repeat count is negative.
  const bool forever = repeat < 0;
  for (int i = 0; forever || i != repeat; i++) {
    // We want to preserve failures generated by ad-hoc test
    // assertions executed before RUN_ALL_TESTS().
    ClearNonAdHocTestResult();

    const TimeInMillis start = GetTimeInMillis();

    // Shuffles test cases and tests if requested.
    if (has_tests_to_run && GTEST_FLAG(shuffle)) {
      random()->Reseed(random_seed_);
      // This should be done before calling OnTestIterationStart(),
      // such that a test event listener can see the actual test order
      // in the event.
      ShuffleTests();
    }

    // Tells the unit test event listeners that the tests are about to start.
    repeater->OnTestIterationStart(*parent_, i);

    // Runs each test case if there is at least one test to run.
    if (has_tests_to_run) {
      // Sets up all environments beforehand.
      repeater->OnEnvironmentsSetUpStart(*parent_);
      ForEach(environments_, SetUpEnvironment);
      repeater->OnEnvironmentsSetUpEnd(*parent_);

      // Runs the tests only if there was no fatal failure during global
      // set-up.
      if (!Test::HasFatalFailure()) {
        for (int test_index = 0; test_index < total_test_case_count();
             test_index++) {
          GetMutableTestCase(test_index)->Run();
        }
      }

      // Tears down all environments in reverse order afterwards.
      repeater->OnEnvironmentsTearDownStart(*parent_);
      std::for_each(environments_.rbegin(), environments_.rend(),
                    TearDownEnvironment);
      repeater->OnEnvironmentsTearDownEnd(*parent_);
    }

    elapsed_time_ = GetTimeInMillis() - start;

    // Tells the unit test event listener that the tests have just finished.
    repeater->OnTestIterationEnd(*parent_, i);

    // Gets the result and clears it.
    if (!Passed()) {
      failed = true;
    }

    // Restores the original test order after the iteration.  This
    // allows the user to quickly repro a failure that happens in the
    // N-th iteration without repeating the first (N - 1) iterations.
    // This is not enclosed in "if (GTEST_FLAG(shuffle)) { ... }", in
    // case the user somehow changes the value of the flag somewhere
    // (it's always safe to unshuffle the tests).
    UnshuffleTests();

    if (GTEST_FLAG(shuffle)) {
      // Picks a new random seed for each iteration.
      random_seed_ = GetNextRandomSeed(random_seed_);
    }
  }

  repeater->OnTestProgramEnd(*parent_);

  return !failed;
}