Mojo Video Capture service in media/capture

media/capture/service/video_capture_handler_impl_unittest.cc

+// Copyright 2016 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/command_line.h"
+#include "base/run_loop.h"
+#include "media/base/media_switches.h"
+#include "media/capture/service/video_capture_handler_impl.h"
+#include "media/capture/video/fake_video_capture_device_factory.h"
+#include "mojo/converters/geometry/geometry_type_converters.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::_;
+using ::testing::InSequence;
+
+namespace media {
+
+namespace {
+
+ACTION_P(RunClosure, closure) {
+  closure.Run();
+}
+
+}  // anonymous namespace
+
+class VideoCaptureHandlerImplTest : public testing::Test {
+ public:
+  VideoCaptureHandlerImplTest() {}
+
+  void SetUp() override {
+    base::CommandLine::ForCurrentProcess()->AppendSwitch(
+        switches::kUseFakeDeviceForMediaStream);
+    video_capture_handler_impl_.reset(
+        new VideoCaptureHandlerImpl(nullptr /* app */));
+  }
+
+  MOCK_METHOD0(DoOnRequestMediaDevicesReply, void(void));
+  void OnRequestMediaDevicesReply(mojo::Array<mojom::WebSourceInfoPtr> reply) {
+    DoOnRequestMediaDevicesReply();
+    media_devices_info_ = std::move(reply);
+  }
+  MOCK_METHOD1(DoOnRequestStreamReply, void(const mojom::Stream&));
+  void OnRequestStreamReply(mojom::StreamPtr stream) {
+    DVLOG(1) << __FUNCTION__;
+    DoOnRequestStreamReply(*stream);
+  }
+
+  void RequestMediaDevices(
+      const VideoCaptureHandlerImpl::RequestMediaDevicesCallback& callback) {
+    video_capture_handler_impl_->RequestMediaDevices(callback);
+  }
+
+  void SetNumFakeDevices(int num) {
+    static_cast<media::FakeVideoCaptureDeviceFactory*>(
+        video_capture_handler_impl_->video_capture_device_factory_.get())
+        ->set_number_of_devices(num);
+  }
+
+  void RequestStream(
+      mojom::StreamOptionsPtr options,
+      const mojo::String& security_origin,
+      const VideoCaptureHandlerImpl::RequestStreamCallback& callback) {
+    video_capture_handler_impl_->RequestStream(std::move(options),
+                                               security_origin, callback);
+  }
+
+ protected:
+  // Needed for the mojo::ApplicationImpl inside VideoCaptureHandlerImpl.
+  const base::MessageLoop loop_;
+
+  // Need a SystemMonitor for VideoCaptureHandlerImpl to register to.
+  base::SystemMonitor system_monitor_;
+
+  // The class under test. Needs to be a scoped_ptr to be initialized after
+  // adding |kUseFakeDeviceForMediaStream| command line flag.
+  scoped_ptr<VideoCaptureHandlerImpl> video_capture_handler_impl_;
+
+  // Variable to hold on to the returned list of enumerated devices.
+  mojo::Array<mojom::WebSourceInfoPtr> media_devices_info_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(VideoCaptureHandlerImplTest);
+};
+
+TEST_F(VideoCaptureHandlerImplTest, CreateAndDestroy) {}
+
+// Tests a cycle RequestMediaDevices()-> RequestMediaDevicesCallback().
+TEST_F(VideoCaptureHandlerImplTest, RequestMediaDevices) {
+  InSequence s;
+
+  VideoCaptureHandlerImpl::RequestMediaDevicesCallback callback =
+      base::Bind(&VideoCaptureHandlerImplTest::OnRequestMediaDevicesReply,
+                 base::Unretained(this));
+
+  base::RunLoop run_loop;
+  base::Closure quit_closure = run_loop.QuitClosure();
+  EXPECT_CALL(*this, DoOnRequestMediaDevicesReply())
+      .Times(1)
+      .WillOnce(RunClosure(quit_closure));
+  RequestMediaDevices(std::move(callback));
+
+  run_loop.Run();
+  ASSERT_EQ(1u, media_devices_info_.size());
+  EXPECT_EQ(mojom::SourceKind::Video, media_devices_info_[0]->kind);
+}
+
+// Tests a cycle RequestMediaDevices()-> RequestMediaDevicesCallback() before
+// and after a change in system devices has happened.
+TEST_F(VideoCaptureHandlerImplTest, RequestMediaDevicesAndReenumerate) {
+  InSequence s;
+  {  // 1 Enumeration RequestMediaDevices()-> RequestMediaDevicesCallback().
+    VideoCaptureHandlerImpl::RequestMediaDevicesCallback callback =
+        base::Bind(&VideoCaptureHandlerImplTest::OnRequestMediaDevicesReply,
+                   base::Unretained(this));
+
+    base::RunLoop run_loop;
+    base::Closure quit_closure = run_loop.QuitClosure();
+    EXPECT_CALL(*this, DoOnRequestMediaDevicesReply())
+        .Times(1)
+        .WillOnce(RunClosure(quit_closure));
+    RequestMediaDevices(std::move(callback));
+    run_loop.Run();
+
+    ASSERT_GE(media_devices_info_.size(), 1u);
+  }
+
+  SetNumFakeDevices(2);
+  system_monitor_.ProcessDevicesChanged(
+      base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE);
+  base::RunLoop().RunUntilIdle();
+
+  {
+    VideoCaptureHandlerImpl::RequestMediaDevicesCallback callback =
+        base::Bind(&VideoCaptureHandlerImplTest::OnRequestMediaDevicesReply,
+                   base::Unretained(this));
+
+    base::RunLoop run_loop;
+    base::Closure quit_closure = run_loop.QuitClosure();
+    EXPECT_CALL(*this, DoOnRequestMediaDevicesReply())
+        .Times(1)
+        .WillOnce(RunClosure(quit_closure));
+    RequestMediaDevices(std::move(callback));
+    run_loop.Run();
+
+    ASSERT_GE(media_devices_info_.size(), 2u);
+  }
+}
+
+// Tests a cycle RequestStream() -> RequestStreamCallback().
+TEST_F(VideoCaptureHandlerImplTest, RequestStream) {
+  InSequence s;
+
+  {  // Enumerate devices to get a valid |id| for the first one.
+    VideoCaptureHandlerImpl::RequestMediaDevicesCallback callback =
+        base::Bind(&VideoCaptureHandlerImplTest::OnRequestMediaDevicesReply,
+                   base::Unretained(this));
+
+    base::RunLoop run_loop;
+    base::Closure quit_closure = run_loop.QuitClosure();
+    EXPECT_CALL(*this, DoOnRequestMediaDevicesReply())
+        .Times(1)
+        .WillOnce(RunClosure(quit_closure));
+    RequestMediaDevices(std::move(callback));
+
+    run_loop.Run();
+  }
+  {
+    mojom::StreamOptionsPtr options = mojom::StreamOptions::New();
+    options->device_id = media_devices_info_[0]->device_id;
+    options->capture_size = mojo::Size::From(gfx::Size(640, 480));
+    options->frame_rate = 30.0;
+
+    VideoCaptureHandlerImpl::RequestStreamCallback callback =
+        base::Bind(&VideoCaptureHandlerImplTest::OnRequestStreamReply,
+                   base::Unretained(this));
+
+    base::RunLoop run_loop;
+    base::Closure quit_closure = run_loop.QuitClosure();
+
+    // TODO(mcasas): Inspect the replied sources[0] contents.
+    EXPECT_CALL(*this, DoOnRequestStreamReply(_))
+        .Times(1)
+        .WillOnce(RunClosure(quit_closure));
+    RequestStream(std::move(options), "https://localhost", std::move(callback));
+
+    run_loop.Run();
+  }
+}
+
+}  // namespace media