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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 <iostream>
#include <gtest/gtest.h>
// 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_
namespace testing {
namespace {
using internal::List;
using internal::ListNode;
using internal::String;
using internal::TestProperty;
using internal::TestPropertyKeyIs;
// How many threads to create?
const int kThreadCount = 50;
String IdToKey(int id, const char* suffix) {
Message key;
key << "key_" << id << "_" << suffix;
return key.GetString();
}
String IdToString(int id) {
Message id_message;
id_message << id;
return id_message.GetString();
}
void ExpectKeyAndValueWereRecordedForId(const List<TestProperty>& properties,
int id,
const char* suffix) {
TestPropertyKeyIs matches_key(IdToKey(id, suffix).c_str());
const ListNode<TestProperty>* node = properties.FindIf(matches_key);
EXPECT_TRUE(node != NULL) << "expecting " << suffix << " node for id " << id;
EXPECT_STREQ(IdToString(id).c_str(), node->element().value());
}
// Calls a large number of Google Test assertions, where exactly one of them
// will fail.
void ManyAsserts(int id) {
::std::cout << "Thread #" << id << " running...\n";
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.";
}
}
// Tests using SCOPED_TRACE() and Google Test assertions in many threads
// concurrently.
TEST(StressTest, CanUseScopedTraceAndAssertionsInManyThreads) {
// TODO(wan): when Google Test is made thread-safe, run
// ManyAsserts() in many threads here.
}
TEST(NoFatalFailureTest, ExpectNoFatalFailureIgnoresFailuresInOtherThreads) {
// TODO(mheule@google.com): Test this works correctly when Google
// Test is made thread-safe.
}
TEST(NoFatalFailureTest, AssertNoFatalFailureIgnoresFailuresInOtherThreads) {
// TODO(mheule@google.com): Test this works correctly when Google
// Test is made thread-safe.
}
TEST(FatalFailureTest, ExpectFatalFailureIgnoresFailuresInOtherThreads) {
// TODO(mheule@google.com): Test this works correctly when Google
// Test is made thread-safe.
}
TEST(FatalFailureOnAllThreadsTest, ExpectFatalFailureOnAllThreads) {
// TODO(wan@google.com): Test this works correctly when Google Test
// is made thread-safe.
}
TEST(NonFatalFailureTest, ExpectNonFatalFailureIgnoresFailuresInOtherThreads) {
// TODO(mheule@google.com): Test this works correctly when Google
// Test is made thread-safe.
}
TEST(NonFatalFailureOnAllThreadsTest, ExpectNonFatalFailureOnAllThreads) {
// TODO(wan@google.com): Test this works correctly when Google Test
// is made thread-safe.
}
} // namespace
} // namespace testing
int main(int argc, char **argv) {
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}