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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/test/mock_devices_changed_observer.h"
#include "content/browser/renderer_host/media/media_devices_manager.h"
#include "content/public/browser/video_capture_service.h"
#include "content/public/test/browser_task_environment.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/video_capture/public/cpp/mock_video_capture_service.h"
#include "services/video_capture/public/cpp/mock_video_source_provider.h"
#include "services/video_capture/public/mojom/video_source_provider.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::_;
using testing::Invoke;
namespace content {
class MockVideoCaptureDevicesChangedObserver
: public MediaDevicesManager::VideoCaptureDevicesChangedObserver {
public:
MockVideoCaptureDevicesChangedObserver()
: VideoCaptureDevicesChangedObserver(
/*disconnect_cb=*/base::BindRepeating(
&MockVideoCaptureDevicesChangedObserver::HandleDevicesChanged,
base::Unretained(this),
MediaDeviceType::kMediaVideoInput),
/*listener_cb=*/base::BindRepeating([] {
if (auto* monitor = base::SystemMonitor::Get()) {
monitor->ProcessDevicesChanged(
base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE);
}
})),
source_provider_receiver_(&mock_source_provider_) {
OverrideVideoCaptureServiceForTesting(&mock_video_capture_service_);
ON_CALL(mock_video_capture_service_, DoConnectToVideoSourceProvider(_))
.WillByDefault(Invoke(
[this](
mojo::PendingReceiver<video_capture::mojom::VideoSourceProvider>
receiver) {
if (source_provider_receiver_.is_bound()) {
source_provider_receiver_.reset();
}
source_provider_receiver_.Bind(std::move(receiver));
base::RunLoop().RunUntilIdle();
}));
EnsureConnectedToService();
base::RunLoop().RunUntilIdle();
}
void CrashService() { source_provider_receiver_.reset(); }
MOCK_METHOD1(HandleDevicesChanged, void(MediaDeviceType type));
mojo::Receiver<video_capture::mojom::VideoSourceProvider>
source_provider_receiver_;
video_capture::MockVideoCaptureService mock_video_capture_service_;
video_capture::MockVideoSourceProvider mock_source_provider_;
};
class DevicesChangedObserverTest : public testing::Test {
public:
DevicesChangedObserverTest()
: mock_video_capture_service_device_changed_observer_(
std::make_unique<MockVideoCaptureDevicesChangedObserver>()) {
system_monitor_.AddDevicesChangedObserver(&observer);
}
void RaiseVirtualDeviceChangeEvent() {
mock_video_capture_service_device_changed_observer_->mock_source_provider_
.RaiseVirtualDeviceChangeEvent();
}
void RaiseDeviceChangeEvent() {
mock_video_capture_service_device_changed_observer_->mock_source_provider_
.RaiseDeviceChangeEvent();
}
void TearDown() override {
system_monitor_.RemoveDevicesChangedObserver(&observer);
}
protected:
content::BrowserTaskEnvironment task_environment_;
base::SystemMonitor system_monitor_;
base::MockDevicesChangedObserver observer;
std::unique_ptr<MockVideoCaptureDevicesChangedObserver>
mock_video_capture_service_device_changed_observer_;
};
TEST_F(DevicesChangedObserverTest,
RegisteredObserverReceivesDeviceChangeEvents) {
EXPECT_CALL(observer,
OnDevicesChanged(base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE))
.Times(1);
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
// No OnDevicesChanged event should be observed when a virtual device change
// event occurs.
RaiseVirtualDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
}
TEST_F(DevicesChangedObserverTest, ServiceCrashes) {
EXPECT_CALL(observer,
OnDevicesChanged(base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE))
.Times(2);
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
// Crashing the service should call disconnect_cb resulting in calling
// |HandleDevicesChanged|. But device change events are still registered
// because the OnConnectionError() function calls EnsureConnectedToService().
EXPECT_CALL(*mock_video_capture_service_device_changed_observer_,
HandleDevicesChanged(MediaDeviceType::kMediaVideoInput))
.Times(1);
mock_video_capture_service_device_changed_observer_->CrashService();
base::RunLoop().RunUntilIdle();
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
}
TEST_F(DevicesChangedObserverTest, ServiceDisconnect) {
EXPECT_CALL(observer,
OnDevicesChanged(base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE))
.Times(1);
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
// Disconnect the service manually should not call disconnect_cb so no
// |HandleDevicesChanged|. Device change events will not be raised after
// disconnect.
EXPECT_CALL(*mock_video_capture_service_device_changed_observer_,
HandleDevicesChanged(MediaDeviceType::kMediaVideoInput))
.Times(0);
mock_video_capture_service_device_changed_observer_
->DisconnectVideoSourceProvider();
base::RunLoop().RunUntilIdle();
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
}
TEST_F(DevicesChangedObserverTest, ConnectServiceAfterCrash) {
EXPECT_CALL(observer,
OnDevicesChanged(base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE))
.Times(2);
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
// Crashing the service should call disconnect_cb resulting in calling
// |HandleDevicesChanged|. Manually call EnsureConnectedToService won't affect
// current mojo bound state.
EXPECT_CALL(*mock_video_capture_service_device_changed_observer_,
HandleDevicesChanged(MediaDeviceType::kMediaVideoInput))
.Times(1);
mock_video_capture_service_device_changed_observer_->CrashService();
base::RunLoop().RunUntilIdle();
mock_video_capture_service_device_changed_observer_
->EnsureConnectedToService();
base::RunLoop().RunUntilIdle();
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
}
TEST_F(DevicesChangedObserverTest, ConnectServiceAfterDisconnect) {
EXPECT_CALL(observer,
OnDevicesChanged(base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE))
.Times(2);
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
// Disconnect the service manually should not call disconnect_cb so no
// |HandleDevicesChanged|. Device change events will be raised after service
// is connecteded.
EXPECT_CALL(*mock_video_capture_service_device_changed_observer_,
HandleDevicesChanged(MediaDeviceType::kMediaVideoInput))
.Times(0);
mock_video_capture_service_device_changed_observer_
->DisconnectVideoSourceProvider();
base::RunLoop().RunUntilIdle();
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
mock_video_capture_service_device_changed_observer_
->EnsureConnectedToService();
base::RunLoop().RunUntilIdle();
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
}
TEST_F(DevicesChangedObserverTest, ConnectServiceTwiceAfterDisconnect) {
EXPECT_CALL(observer,
OnDevicesChanged(base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE))
.Times(2);
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
// Disconnect the service manually should not call disconnect_cb so no
// |HandleDevicesChanged|. Device change events will be raised after service
// is connecteded.
EXPECT_CALL(*mock_video_capture_service_device_changed_observer_,
HandleDevicesChanged(MediaDeviceType::kMediaVideoInput))
.Times(0);
mock_video_capture_service_device_changed_observer_
->DisconnectVideoSourceProvider();
base::RunLoop().RunUntilIdle();
mock_video_capture_service_device_changed_observer_
->EnsureConnectedToService();
mock_video_capture_service_device_changed_observer_
->EnsureConnectedToService();
base::RunLoop().RunUntilIdle();
RaiseDeviceChangeEvent();
base::RunLoop().RunUntilIdle();
}
} // namespace content
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