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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/public/cpp/utility/thread.h"
#include "mojo/public/cpp/system/macros.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace mojo {
namespace {
class SetIntThread : public Thread {
public:
SetIntThread(int* int_to_set, int value)
: int_to_set_(int_to_set),
value_(value) {
}
SetIntThread(const Options& options, int* int_to_set, int value)
: Thread(options),
int_to_set_(int_to_set),
value_(value) {
}
~SetIntThread() override {}
void Run() override { *int_to_set_ = value_; }
private:
int* const int_to_set_;
const int value_;
MOJO_DISALLOW_COPY_AND_ASSIGN(SetIntThread);
};
TEST(ThreadTest, CreateAndJoin) {
int value = 0;
// Not starting the thread should result in a no-op.
{
SetIntThread thread(&value, 1234567);
}
EXPECT_EQ(0, value);
// Start and join.
{
SetIntThread thread(&value, 12345678);
thread.Start();
thread.Join();
EXPECT_EQ(12345678, value);
}
// Ditto, with non-default (but reasonable) stack size.
{
Thread::Options options;
options.set_stack_size(1024 * 1024); // 1 MB.
SetIntThread thread(options, &value, 12345678);
thread.Start();
thread.Join();
EXPECT_EQ(12345678, value);
}
}
// Tests of assertions for Debug builds.
// Note: It's okay to create threads, despite gtest having to fork. (The threads
// are in the child process.)
#if !defined(NDEBUG)
TEST(ThreadTest, DebugAssertionFailures) {
// Can only start once.
EXPECT_DEATH_IF_SUPPORTED({
int value = 0;
SetIntThread thread(&value, 1);
thread.Start();
thread.Start();
}, "");
// Must join (if you start).
EXPECT_DEATH_IF_SUPPORTED({
int value = 0;
SetIntThread thread(&value, 2);
thread.Start();
}, "");
// Can only join once.
EXPECT_DEATH_IF_SUPPORTED({
int value = 0;
SetIntThread thread(&value, 3);
thread.Start();
thread.Join();
thread.Join();
}, "");
// Stack too big (we're making certain assumptions here).
EXPECT_DEATH_IF_SUPPORTED({
int value = 0;
Thread::Options options;
options.set_stack_size(static_cast<size_t>(-1));
SetIntThread thread(options, &value, 4);
thread.Start();
thread.Join();
}, "");
}
#endif // !defined(NDEBUG)
} // namespace
} // namespace mojo
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