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R9484/test/gtest_repeat_test.cc
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gtest_repeat_test.cc
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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
#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 (expected_val != actual_val) {\
::std::cout << "Value of: " #actual "\n"\
<< " Actual: " << actual_val << "\n"\
<< "Expected: " #expected "\n"\
<< "Which is: " << expected_val << "\n";\
abort();\
}\
} while(false)
// 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++;
#ifdef GTEST_HAS_DEATH_TEST
GTEST_FLAG(death_test_style) = "threadsafe";
EXPECT_DEATH(abort(), "");
GTEST_FLAG(death_test_style) = "fast";
EXPECT_DEATH(abort(), "");
#endif // GTEST_HAS_DEATH_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;
}
// 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);
}
// 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);
}
// 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);
}
} // 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;
}
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