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// 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 <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
#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.
}
} // namespace
} // namespace testing
int main(int argc, char **argv) {
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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