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 // 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.

 //     * 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.

 //

 // Author: wan@google.com (Zhanyong Wan)

 // Tests the --gtest_repeat=number flag.

 #include <stdlib.h>

 #include <iostream>

 #include "gtest/gtest.h"

 // Indicates that this translation unit is part of Google Test's

 // implementation.  It must come before gtest-internal-inl.h is

 // included, or there will be a compiler error.  This trick is to

 // prevent a user from accidentally including gtest-internal-inl.h in

 // his code.

 #define GTEST_IMPLEMENTATION_ 1

 #include "src/gtest-internal-inl.h"

 #undef GTEST_IMPLEMENTATION_

 namespace testing {

 GTEST_DECLARE_string_(death_test_style);

 GTEST_DECLARE_string_(filter);

 GTEST_DECLARE_int32_(repeat);

 }  // namespace testing

 using testing::GTEST_FLAG(death_test_style);

 using testing::GTEST_FLAG(filter);

 using testing::GTEST_FLAG(repeat);

 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() {}

   virtual void SetUp() { g_environment_set_up_count++; }

   virtual void TearDown() { 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(death_test_style) = "threadsafe";

   EXPECT_DEATH_IF_SUPPORTED(::testing::internal::posix::Abort(), "");

   GTEST_FLAG(death_test_style) = "fast";

   EXPECT_DEATH_IF_SUPPORTED(::testing::internal::posix::Abort(), "");

 }

 #if GTEST_HAS_PARAM_TEST

 int g_param_test_count = 0;

 const int kNumberOfParamTests = 10;

 class MyParamTest : public testing::TestWithParam<int> {};

 TEST_P(MyParamTest, ShouldPass) {

   // TODO(vladl@google.com): Make parameter value checking robust

   //                         WRT order of tests.

   GTEST_CHECK_INT_EQ_(g_param_test_count % kNumberOfParamTests, GetParam());

   g_param_test_count++;

 }

 INSTANTIATE_TEST_CASE_P(MyParamSequence,

                         MyParamTest,

                         testing::Range(0, kNumberOfParamTests));

 #endif  // GTEST_HAS_PARAM_TEST

 // 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;

 #if GTEST_HAS_PARAM_TEST

   g_param_test_count = 0;

 #endif  // GTEST_HAS_PARAM_TEST

 }

 // 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);

 #if GTEST_HAS_PARAM_TEST

   GTEST_CHECK_INT_EQ_(expected * kNumberOfParamTests, g_param_test_count);

 #endif  // GTEST_HAS_PARAM_TEST

 }

 // 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(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(repeat) = repeat;

   GTEST_FLAG(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(repeat) = repeat;

   GTEST_FLAG(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);

 #if GTEST_HAS_PARAM_TEST

   GTEST_CHECK_INT_EQ_(repeat * kNumberOfParamTests, g_param_test_count);

 #endif  // GTEST_HAS_PARAM_TEST

 }

 // Tests using --gtest_repeat when --gtest_filter specifies a set of

 // failed tests.

 void TestRepeatWithFilterForFailedTests(int repeat) {

   GTEST_FLAG(repeat) = repeat;

   GTEST_FLAG(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);

 #if GTEST_HAS_PARAM_TEST

   GTEST_CHECK_INT_EQ_(0, g_param_test_count);

 #endif  // GTEST_HAS_PARAM_TEST

 }

 }  // 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;

 }