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// Copyright 2018 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 "services/audio/device_notifier.h"
#include <memory>
#include <utility>
#include "base/system/system_monitor.h"
#include "base/test/task_environment.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/audio/public/mojom/device_notifications.mojom.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace audio {
namespace {
class MockDeviceListener : public mojom::DeviceListener {
public:
explicit MockDeviceListener(
mojo::PendingReceiver<audio::mojom::DeviceListener> receiver)
: receiver_(this, std::move(receiver)) {}
MOCK_METHOD0(DevicesChanged, void());
private:
mojo::Receiver<audio::mojom::DeviceListener> receiver_;
DISALLOW_COPY_AND_ASSIGN(MockDeviceListener);
};
} // namespace
class DeviceNotifierTest : public ::testing::Test {
public:
DeviceNotifierTest()
: system_monitor_(std::make_unique<base::SystemMonitor>()) {}
protected:
void CreateDeviceNotifier() {
device_notifier_ = std::make_unique<DeviceNotifier>();
device_notifier_->Bind(
remote_device_notifier_.BindNewPipeAndPassReceiver());
}
void DestroyDeviceNotifier() {
remote_device_notifier_.reset();
task_environment_.RunUntilIdle();
}
base::test::TaskEnvironment task_environment_;
mojo::Remote<mojom::DeviceNotifier> remote_device_notifier_;
private:
std::unique_ptr<base::SystemMonitor> system_monitor_;
std::unique_ptr<DeviceNotifier> device_notifier_;
DISALLOW_COPY_AND_ASSIGN(DeviceNotifierTest);
};
TEST_F(DeviceNotifierTest, DeviceNotifierNotifies) {
CreateDeviceNotifier();
mojo::PendingRemote<mojom::DeviceListener> remote_device_listener;
MockDeviceListener listener(
remote_device_listener.InitWithNewPipeAndPassReceiver());
// Simulate audio-device event, but no callback should be invoked before the
// listener is registered.
EXPECT_CALL(listener, DevicesChanged()).Times(0);
base::SystemMonitor::Get()->ProcessDevicesChanged(
base::SystemMonitor::DEVTYPE_AUDIO);
task_environment_.RunUntilIdle();
// Register the listener and simulate an audio-device event.
remote_device_notifier_->RegisterListener(std::move(remote_device_listener));
EXPECT_CALL(listener, DevicesChanged());
base::SystemMonitor::Get()->ProcessDevicesChanged(
base::SystemMonitor::DEVTYPE_AUDIO);
task_environment_.RunUntilIdle();
// Simulate a video-device event, which should be ignored.
EXPECT_CALL(listener, DevicesChanged()).Times(0);
base::SystemMonitor::Get()->ProcessDevicesChanged(
base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE);
task_environment_.RunUntilIdle();
DestroyDeviceNotifier();
}
} // namespace audio
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