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Diffstat (limited to 'ext/googletest/test/gtest_stress_test.cc')
| -rw-r--r-- | ext/googletest/test/gtest_stress_test.cc | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/ext/googletest/test/gtest_stress_test.cc b/ext/googletest/test/gtest_stress_test.cc new file mode 100644 index 000000000..e7daa430d --- /dev/null +++ b/ext/googletest/test/gtest_stress_test.cc @@ -0,0 +1,256 @@ +// Copyright 2007, 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 that SCOPED_TRACE() and various Google Test assertions can be +// used in a large number of threads concurrently. + +#include "gtest/gtest.h" + +#include <iostream> +#include <vector> + +// We must define this macro in order to #include +// gtest-internal-inl.h. This is how Google Test prevents a user from +// accidentally depending on its internal implementation. +#define GTEST_IMPLEMENTATION_ 1 +#include "src/gtest-internal-inl.h" +#undef GTEST_IMPLEMENTATION_ + +#if GTEST_IS_THREADSAFE + +namespace testing { +namespace { + +using internal::Notification; +using internal::TestPropertyKeyIs; +using internal::ThreadWithParam; +using internal::scoped_ptr; + +// In order to run tests in this file, for platforms where Google Test is +// thread safe, implement ThreadWithParam. See the description of its API +// in gtest-port.h, where it is defined for already supported platforms. + +// How many threads to create? +const int kThreadCount = 50; + +std::string IdToKey(int id, const char* suffix) { + Message key; + key << "key_" << id << "_" << suffix; + return key.GetString(); +} + +std::string IdToString(int id) { + Message id_message; + id_message << id; + return id_message.GetString(); +} + +void ExpectKeyAndValueWereRecordedForId( + const std::vector<TestProperty>& properties, + int id, const char* suffix) { + TestPropertyKeyIs matches_key(IdToKey(id, suffix).c_str()); + const std::vector<TestProperty>::const_iterator property = + std::find_if(properties.begin(), properties.end(), matches_key); + ASSERT_TRUE(property != properties.end()) + << "expecting " << suffix << " value for id " << id; + EXPECT_STREQ(IdToString(id).c_str(), property->value()); +} + +// Calls a large number of Google Test assertions, where exactly one of them +// will fail. +void ManyAsserts(int id) { + GTEST_LOG_(INFO) << "Thread #" << id << " running..."; + + SCOPED_TRACE(Message() << "Thread #" << id); + + for (int i = 0; i < kThreadCount; i++) { + SCOPED_TRACE(Message() << "Iteration #" << i); + + // A bunch of assertions that should succeed. + EXPECT_TRUE(true); + ASSERT_FALSE(false) << "This shouldn't fail."; + EXPECT_STREQ("a", "a"); + ASSERT_LE(5, 6); + EXPECT_EQ(i, i) << "This shouldn't fail."; + + // RecordProperty() should interact safely with other threads as well. + // The shared_key forces property updates. + Test::RecordProperty(IdToKey(id, "string").c_str(), IdToString(id).c_str()); + Test::RecordProperty(IdToKey(id, "int").c_str(), id); + Test::RecordProperty("shared_key", IdToString(id).c_str()); + + // This assertion should fail kThreadCount times per thread. It + // is for testing whether Google Test can handle failed assertions in a + // multi-threaded context. + EXPECT_LT(i, 0) << "This should always fail."; + } +} + +void CheckTestFailureCount(int expected_failures) { + const TestInfo* const info = UnitTest::GetInstance()->current_test_info(); + const TestResult* const result = info->result(); + GTEST_CHECK_(expected_failures == result->total_part_count()) + << "Logged " << result->total_part_count() << " failures " + << " vs. " << expected_failures << " expected"; +} + +// Tests using SCOPED_TRACE() and Google Test assertions in many threads +// concurrently. +TEST(StressTest, CanUseScopedTraceAndAssertionsInManyThreads) { + { + scoped_ptr<ThreadWithParam<int> > threads[kThreadCount]; + Notification threads_can_start; + for (int i = 0; i != kThreadCount; i++) + threads[i].reset(new ThreadWithParam<int>(&ManyAsserts, + i, + &threads_can_start)); + + threads_can_start.Notify(); + + // Blocks until all the threads are done. + for (int i = 0; i != kThreadCount; i++) + threads[i]->Join(); + } + + // Ensures that kThreadCount*kThreadCount failures have been reported. + const TestInfo* const info = UnitTest::GetInstance()->current_test_info(); + const TestResult* const result = info->result(); + + std::vector<TestProperty> properties; + // We have no access to the TestResult's list of properties but we can + // copy them one by one. + for (int i = 0; i < result->test_property_count(); ++i) + properties.push_back(result->GetTestProperty(i)); + + EXPECT_EQ(kThreadCount * 2 + 1, result->test_property_count()) + << "String and int values recorded on each thread, " + << "as well as one shared_key"; + for (int i = 0; i < kThreadCount; ++i) { + ExpectKeyAndValueWereRecordedForId(properties, i, "string"); + ExpectKeyAndValueWereRecordedForId(properties, i, "int"); + } + CheckTestFailureCount(kThreadCount*kThreadCount); +} + +void FailingThread(bool is_fatal) { + if (is_fatal) + FAIL() << "Fatal failure in some other thread. " + << "(This failure is expected.)"; + else + ADD_FAILURE() << "Non-fatal failure in some other thread. " + << "(This failure is expected.)"; +} + +void GenerateFatalFailureInAnotherThread(bool is_fatal) { + ThreadWithParam<bool> thread(&FailingThread, is_fatal, NULL); + thread.Join(); +} + +TEST(NoFatalFailureTest, ExpectNoFatalFailureIgnoresFailuresInOtherThreads) { + EXPECT_NO_FATAL_FAILURE(GenerateFatalFailureInAnotherThread(true)); + // We should only have one failure (the one from + // GenerateFatalFailureInAnotherThread()), since the EXPECT_NO_FATAL_FAILURE + // should succeed. + CheckTestFailureCount(1); +} + +void AssertNoFatalFailureIgnoresFailuresInOtherThreads() { + ASSERT_NO_FATAL_FAILURE(GenerateFatalFailureInAnotherThread(true)); +} +TEST(NoFatalFailureTest, AssertNoFatalFailureIgnoresFailuresInOtherThreads) { + // Using a subroutine, to make sure, that the test continues. + AssertNoFatalFailureIgnoresFailuresInOtherThreads(); + // We should only have one failure (the one from + // GenerateFatalFailureInAnotherThread()), since the EXPECT_NO_FATAL_FAILURE + // should succeed. + CheckTestFailureCount(1); +} + +TEST(FatalFailureTest, ExpectFatalFailureIgnoresFailuresInOtherThreads) { + // This statement should fail, since the current thread doesn't generate a + // fatal failure, only another one does. + EXPECT_FATAL_FAILURE(GenerateFatalFailureInAnotherThread(true), "expected"); + CheckTestFailureCount(2); +} + +TEST(FatalFailureOnAllThreadsTest, ExpectFatalFailureOnAllThreads) { + // This statement should succeed, because failures in all threads are + // considered. + EXPECT_FATAL_FAILURE_ON_ALL_THREADS( + GenerateFatalFailureInAnotherThread(true), "expected"); + CheckTestFailureCount(0); + // We need to add a failure, because main() checks that there are failures. + // But when only this test is run, we shouldn't have any failures. + ADD_FAILURE() << "This is an expected non-fatal failure."; +} + +TEST(NonFatalFailureTest, ExpectNonFatalFailureIgnoresFailuresInOtherThreads) { + // This statement should fail, since the current thread doesn't generate a + // fatal failure, only another one does. + EXPECT_NONFATAL_FAILURE(GenerateFatalFailureInAnotherThread(false), + "expected"); + CheckTestFailureCount(2); +} + +TEST(NonFatalFailureOnAllThreadsTest, ExpectNonFatalFailureOnAllThreads) { + // This statement should succeed, because failures in all threads are + // considered. + EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS( + GenerateFatalFailureInAnotherThread(false), "expected"); + CheckTestFailureCount(0); + // We need to add a failure, because main() checks that there are failures, + // But when only this test is run, we shouldn't have any failures. + ADD_FAILURE() << "This is an expected non-fatal failure."; +} + +} // namespace +} // namespace testing + +int main(int argc, char **argv) { + testing::InitGoogleTest(&argc, argv); + + const int result = RUN_ALL_TESTS(); // Expected to fail. + GTEST_CHECK_(result == 1) << "RUN_ALL_TESTS() did not fail as expected"; + + printf("\nPASS\n"); + return 0; +} + +#else +TEST(StressTest, + DISABLED_ThreadSafetyTestsAreSkippedWhenGoogleTestIsNotThreadSafe) { +} + +int main(int argc, char **argv) { + testing::InitGoogleTest(&argc, argv); + return RUN_ALL_TESTS(); +} +#endif // GTEST_IS_THREADSAFE |