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// Copyright 2013 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 "base/android/activity_status.h"
#include "base/bind.h"
#include "base/callback_forward.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_loop_proxy.h"
#include "base/run_loop.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace android {
namespace {
using base::android::ScopedJavaLocalRef;
// An invalid ActivityState value.
const ActivityState kInvalidActivityState = static_cast<ActivityState>(100);
// Used to generate a callback that stores the new state at a given location.
void StoreStateTo(ActivityState* target, ActivityState state) {
*target = state;
}
void RunTasksUntilIdle() {
RunLoop run_loop;
run_loop.RunUntilIdle();
}
// Shared state for the multi-threaded test.
// This uses a thread to register for events and listen to them, while state
// changes are forced on the main thread.
class MultiThreadedTest {
public:
MultiThreadedTest()
: activity_status_(ActivityStatus::GetInstance()),
state_(kInvalidActivityState),
event_(false, false),
thread_("ActivityStatusTest thread"),
main_() {
}
void Run() {
// Start the thread and tell it to register for events.
thread_.Start();
thread_.message_loop()
->PostTask(FROM_HERE,
base::Bind(&MultiThreadedTest::RegisterThreadForEvents,
base::Unretained(this)));
// Wait for its completion.
event_.Wait();
// Change state, then wait for the thread to modify state.
activity_status_->OnActivityStateChange(ACTIVITY_STATE_CREATED);
event_.Wait();
EXPECT_EQ(ACTIVITY_STATE_CREATED, state_);
// Again
activity_status_->OnActivityStateChange(ACTIVITY_STATE_DESTROYED);
event_.Wait();
EXPECT_EQ(ACTIVITY_STATE_DESTROYED, state_);
}
private:
void ExpectOnThread() {
EXPECT_EQ(thread_.message_loop(), base::MessageLoop::current());
}
void RegisterThreadForEvents() {
ExpectOnThread();
listener_.reset(new ActivityStatus::Listener(base::Bind(
&MultiThreadedTest::StoreStateAndSignal, base::Unretained(this))));
EXPECT_TRUE(listener_.get());
event_.Signal();
}
void StoreStateAndSignal(ActivityState state) {
ExpectOnThread();
state_ = state;
event_.Signal();
}
ActivityStatus* const activity_status_;
ActivityState state_;
base::WaitableEvent event_;
base::Thread thread_;
base::MessageLoop main_;
scoped_ptr<ActivityStatus::Listener> listener_;
};
} // namespace
TEST(ActivityStatusTest, SingleThread) {
MessageLoop message_loop;
ActivityState result = kInvalidActivityState;
// Create a new listener that stores the new state into |result| on every
// state change.
ActivityStatus::Listener listener(
base::Bind(&StoreStateTo, base::Unretained(&result)));
EXPECT_EQ(kInvalidActivityState, result);
ActivityStatus* const activity_status = ActivityStatus::GetInstance();
activity_status->OnActivityStateChange(ACTIVITY_STATE_CREATED);
RunTasksUntilIdle();
EXPECT_EQ(ACTIVITY_STATE_CREATED, result);
activity_status->OnActivityStateChange(ACTIVITY_STATE_DESTROYED);
RunTasksUntilIdle();
EXPECT_EQ(ACTIVITY_STATE_DESTROYED, result);
}
TEST(ActivityStatusTest, TwoThreads) {
MultiThreadedTest test;
test.Run();
}
} // namespace android
} // namespace base
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