text: // Copyright 2008, 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.
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  // 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.
  
  // Tests the --gtest_repeat=number flag.
  
  #include <stdlib.h>
  
  #include <iostream>
  
  #include "gtest/gtest.h"
  #include "src/gtest-internal-inl.h"
  
  namespace {
  
  // We need this when we are testing Google Test itself and therefore
  // cannot use Google Test assertions.
  #define GTEST_CHECK_INT_EQ_(expected, actual)                      \
    do {                                                             \
      const int expected_val = (expected);                           \
      const int actual_val = (actual);                               \
      if (::testing::internal::IsTrue(expected_val != actual_val)) { \
        ::std::cout << "Value of: " #actual "\n"                     \
                    << "  Actual: " << actual_val << "\n"            \
                    << "Expected: " #expected "\n"                   \
                    << "Which is: " << expected_val << "\n";         \
        ::testing::internal::posix::Abort();                         \
      }                                                              \
    } while (::testing::internal::AlwaysFalse())
  
  // Used for verifying that global environment set-up and tear-down are
  // inside the --gtest_repeat loop.
  
  int g_environment_set_up_count = 0;
  int g_environment_tear_down_count = 0;
  
  class MyEnvironment : public testing::Environment {
   public:
    MyEnvironment() {}
    void SetUp() override { g_environment_set_up_count++; }
    void TearDown() override { g_environment_tear_down_count++; }
  };
  
  // A test that should fail.
  
  int g_should_fail_count = 0;
  
  TEST(FooTest, ShouldFail) {
    g_should_fail_count++;
    EXPECT_EQ(0, 1) << "Expected failure.";
  }
  
  // A test that should pass.
  
  int g_should_pass_count = 0;
  
  TEST(FooTest, ShouldPass) { g_should_pass_count++; }
  
  // A test that contains a thread-safe death test and a fast death
  // test.  It should pass.
  
  int g_death_test_count = 0;
  
  TEST(BarDeathTest, ThreadSafeAndFast) {
    g_death_test_count++;
  
    GTEST_FLAG_SET(death_test_style, "threadsafe");
    EXPECT_DEATH_IF_SUPPORTED(::testing::internal::posix::Abort(), "");
  
    GTEST_FLAG_SET(death_test_style, "fast");
    EXPECT_DEATH_IF_SUPPORTED(::testing::internal::posix::Abort(), "");
  }
  
  int g_param_test_count = 0;
  
  const int kNumberOfParamTests = 10;
  
  class MyParamTest : public testing::TestWithParam<int> {};
  
  TEST_P(MyParamTest, ShouldPass) {
    GTEST_CHECK_INT_EQ_(g_param_test_count % kNumberOfParamTests, GetParam());
    g_param_test_count++;
  }
  INSTANTIATE_TEST_SUITE_P(MyParamSequence, MyParamTest,
                           testing::Range(0, kNumberOfParamTests));
  
  // Resets the count for each test.
  void ResetCounts() {
    g_environment_set_up_count = 0;
    g_environment_tear_down_count = 0;
    g_should_fail_count = 0;
    g_should_pass_count = 0;
    g_death_test_count = 0;
    g_param_test_count = 0;
  }
  
  // Checks that the count for each test is expected.
  void CheckCounts(int expected) {
    GTEST_CHECK_INT_EQ_(expected, g_environment_set_up_count);
    GTEST_CHECK_INT_EQ_(expected, g_environment_tear_down_count);
    GTEST_CHECK_INT_EQ_(expected, g_should_fail_count);
    GTEST_CHECK_INT_EQ_(expected, g_should_pass_count);
    GTEST_CHECK_INT_EQ_(expected, g_death_test_count);
    GTEST_CHECK_INT_EQ_(expected * kNumberOfParamTests, g_param_test_count);
  }
  
  // Tests the behavior of Google Test when --gtest_repeat is not specified.
  void TestRepeatUnspecified() {
    ResetCounts();
    GTEST_CHECK_INT_EQ_(1, RUN_ALL_TESTS());
    CheckCounts(1);
  }
  
  // Tests the behavior of Google Test when --gtest_repeat has the given value.
  void TestRepeat(int repeat) {
    GTEST_FLAG_SET(repeat, repeat);
  
    ResetCounts();
    GTEST_CHECK_INT_EQ_(repeat > 0 ? 1 : 0, RUN_ALL_TESTS());
    CheckCounts(repeat);
  }
  
  // Tests using --gtest_repeat when --gtest_filter specifies an empty
  // set of tests.
  void TestRepeatWithEmptyFilter(int repeat) {
    GTEST_FLAG_SET(repeat, repeat);
    GTEST_FLAG_SET(filter, "None");
  
    ResetCounts();
    GTEST_CHECK_INT_EQ_(0, RUN_ALL_TESTS());
    CheckCounts(0);
  }
  
  // Tests using --gtest_repeat when --gtest_filter specifies a set of
  // successful tests.
  void TestRepeatWithFilterForSuccessfulTests(int repeat) {
    GTEST_FLAG_SET(repeat, repeat);
    GTEST_FLAG_SET(filter, "*-*ShouldFail");
  
    ResetCounts();
    GTEST_CHECK_INT_EQ_(0, RUN_ALL_TESTS());
    GTEST_CHECK_INT_EQ_(repeat, g_environment_set_up_count);
    GTEST_CHECK_INT_EQ_(repeat, g_environment_tear_down_count);
    GTEST_CHECK_INT_EQ_(0, g_should_fail_count);
    GTEST_CHECK_INT_EQ_(repeat, g_should_pass_count);
    GTEST_CHECK_INT_EQ_(repeat, g_death_test_count);
    GTEST_CHECK_INT_EQ_(repeat * kNumberOfParamTests, g_param_test_count);
  }
  
  // Tests using --gtest_repeat when --gtest_filter specifies a set of
  // failed tests.
  void TestRepeatWithFilterForFailedTests(int repeat) {
    GTEST_FLAG_SET(repeat, repeat);
    GTEST_FLAG_SET(filter, "*ShouldFail");
  
    ResetCounts();
    GTEST_CHECK_INT_EQ_(1, RUN_ALL_TESTS());
    GTEST_CHECK_INT_EQ_(repeat, g_environment_set_up_count);
    GTEST_CHECK_INT_EQ_(repeat, g_environment_tear_down_count);
    GTEST_CHECK_INT_EQ_(repeat, g_should_fail_count);
    GTEST_CHECK_INT_EQ_(0, g_should_pass_count);
    GTEST_CHECK_INT_EQ_(0, g_death_test_count);
    GTEST_CHECK_INT_EQ_(0, g_param_test_count);
  }
  
  }  // namespace
  
  int main(int argc, char **argv) {
    testing::InitGoogleTest(&argc, argv);
  
    testing::AddGlobalTestEnvironment(new MyEnvironment);
  
    TestRepeatUnspecified();
    TestRepeat(0);
    TestRepeat(1);
    TestRepeat(5);
  
    TestRepeatWithEmptyFilter(2);
    TestRepeatWithEmptyFilter(3);
  
    TestRepeatWithFilterForSuccessfulTests(3);
  
    TestRepeatWithFilterForFailedTests(4);
  
    // It would be nice to verify that the tests indeed loop forever
    // when GTEST_FLAG(repeat) is negative, but this test will be quite
    // complicated to write.  Since this flag is for interactive
    // debugging only and doesn't affect the normal test result, such a
    // test would be an overkill.
  
    printf("PASS\n");
    return 0;
  }
  