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dynamicbitset/gtest-1.7.0/test/gtest_stress_test.cc
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// | |
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// | |
// 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 |