Mojo Video Capture service in media/capture

media/capture/service/stream_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/bind.h"
+#include "base/run_loop.h"
+#include "media/capture/service/mock_stream_client.h"
+#include "media/capture/service/mojo_video_frame.h"
+#include "media/capture/service/stream_impl.h"
+#include "mojo/public/cpp/system/buffer.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::_;
+using ::testing::AllOf;
+using ::testing::InSequence;
+using ::testing::Field;
+using ::testing::Property;
+
+namespace media {
+
+namespace {
+
+ACTION_P(RunClosure, closure) {
+  closure.Run();
+}
+
+}  // anonymous namespace
+
+class StreamImplTest : public testing::Test {
+ public:
+  StreamImplTest()
+      : stream_impl_(new StreamImpl(
+            mojo::GetProxy(&stream_ptr_),
+            base::Bind(&StreamImplTest::StartCallback, base::Unretained(this)),
+            base::Bind(&StreamImplTest::StopCallback, base::Unretained(this)),
+            base::Bind(&StreamImplTest::ErrorCallback,
+                       base::Unretained(this)))) {}
+
+  void SetUp() override {}
+  void TearDown() override {}
+
+  MOCK_METHOD0(StartCallback, void());
+  MOCK_METHOD0(StopCallback, void());
+  MOCK_METHOD0(ErrorCallback, void());
+  MOCK_METHOD0(OnRelease, void());
+
+  void OnFrame(const scoped_refptr<MojoVideoFrame>& frame,
+               const base::TimeTicks& timestamp) {
+    stream_impl_->OnFrame(frame, timestamp);
+  }
+  void OnError(const std::string& reason) { stream_impl_->OnError(reason); }
+
+  void StartAndExpectStartCallback() {
+    EXPECT_CALL(*this, StartCallback()).Times(1);
+    video_capture::StreamClientPtr le_client =
+        stream_client_impl_.CreateProxy();
+    stream_impl_->Start(std::move(le_client));
+  }
+
+ protected:
+  // This is needed for the Binding's Router's HandleWatcher :)
+  const base::MessageLoop loop_;
+
+  video_capture::StreamPtr stream_ptr_;
+  // The class under test.
+  const scoped_ptr<StreamImpl> stream_impl_;
+
+  // The mock of the (remote) video capture client.
+  MockStreamClient stream_client_impl_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(StreamImplTest);
+};
+
+TEST_F(StreamImplTest, CreateAndStartAndDestroy) {
+  StartAndExpectStartCallback();
+}
+
+// Tests the connection
+// OnFrame() --> (NotifyFrameAvailable()) --> client's FrameAvailable().
+TEST_F(StreamImplTest, OnFramePingsFrameAvailable) {
+  InSequence s;
+  StartAndExpectStartCallback();
+
+  const gfx::Size kFrameSize(10, 10);
+  const scoped_refptr<MojoVideoFrame> le_frame =
+      MojoVideoFrame::CreateMojoVideoFrame(kFrameSize, base::TimeDelta());
+  le_frame->AddDestructionObserver(
+      base::Bind(&StreamImplTest::OnRelease, base::Unretained(this)));
+  const base::TimeTicks now = base::TimeTicks::Now();
+
+  base::RunLoop run_loop;
+  base::Closure quit_closure = run_loop.QuitClosure();
+  EXPECT_CALL(
+      stream_client_impl_,
+      DoFrameAvailable(AllOf(Field(&video_capture::FrameInfo::storage_size,
+                                   le_frame->mapped_size()),
+                             Field(&video_capture::FrameInfo::pixel_format,
+                                   static_cast<media::interfaces::VideoFormat>(
+                                       le_frame->format())),
+                             Field(&video_capture::FrameInfo::timestamp,
+                                   now.ToInternalValue())),
+                       _))
+      .Times(1)
+      .WillOnce(RunClosure(quit_closure));
+  EXPECT_CALL(*this, OnRelease()).Times(1);
+
+  OnFrame(le_frame, now);
+  run_loop.Run();
+}
+
+// Tests the connection
+// OnError() --> (NotifyError()) --> client's and owners' Error().
+TEST_F(StreamImplTest, OnErrorPingsError) {
+  InSequence s;
+  StartAndExpectStartCallback();
+
+  const std::string kErrorMessage("big error!");
+  base::RunLoop run_loop;
+  base::Closure quit_closure = run_loop.QuitClosure();
+
+  EXPECT_CALL(*this, ErrorCallback()).Times(1);
+  EXPECT_CALL(
+      stream_client_impl_,
+      Error(Property(&mojo::String::To<std::string>, kErrorMessage.c_str())))
+      .Times(1)
+      .WillOnce(RunClosure(quit_closure));
+  OnError(kErrorMessage);
+  run_loop.Run();
+}
+
+// Tests the connection Stop() --> Stop Callback.
+TEST_F(StreamImplTest, StopPingsStopCallback) {
+  StartAndExpectStartCallback();
+  stream_impl_->Pause();
+  stream_impl_->Resume();
+
+  EXPECT_CALL(*this, ErrorCallback()).Times(0);
+  EXPECT_CALL(*this, StopCallback()).Times(1);
+  stream_impl_->Stop();
+  base::RunLoop().RunUntilIdle();
+}
+
+}  // namespace media