Reland: VideoCapture: migrate VideoCapture renderer-->host messages to mojo, part 1

content/renderer/media/video_capture_impl_unittest.cc

 // Copyright (c) 2012 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 <stddef.h>
 
 #include "base/macros.h"
 #include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "content/child/child_process.h"
 #include "content/common/media/video_capture_messages.h"
+#include "content/common/video_capture.mojom.h"
 #include "content/renderer/media/video_capture_impl.h"
 #include "media/base/bind_to_current_loop.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::_;
 using ::testing::AtLeast;
 using ::testing::InvokeWithoutArgs;
 using ::testing::Return;
 using ::testing::SaveArg;
 
 namespace content {
 
+// Mock implementation of the Mojo service implementation.
+// TODO(mcasas): In time MockVideoCaptureService will completely replace
+// MockVideoCaptureMessageFilter
+class MockVideoCaptureService : public mojom::VideoCaptureService {
+ public:
+  MockVideoCaptureService() = default;
+
+  MOCK_METHOD1(Stop, void(int32_t));
+  MOCK_METHOD1(Pause, void(int32_t));
+  MOCK_METHOD1(RequestRefreshFrame, void(int32_t));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockVideoCaptureService);
+};
+
 class MockVideoCaptureMessageFilter : public VideoCaptureMessageFilter {
  public:
   MockVideoCaptureMessageFilter() : VideoCaptureMessageFilter() {}
 
   // Filter implementation.
   MOCK_METHOD1(Send, bool(IPC::Message* message));
 
  protected:
   virtual ~MockVideoCaptureMessageFilter() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockVideoCaptureMessageFilter);
 };
 
 class VideoCaptureImplTest : public ::testing::Test {
  public:
   class MockVideoCaptureImpl : public VideoCaptureImpl {
    public:
     MockVideoCaptureImpl(const media::VideoCaptureSessionId id,
                          VideoCaptureMessageFilter* filter)
         : VideoCaptureImpl(id, filter, base::ThreadTaskRunnerHandle::Get()),
           received_buffer_count_(0) {}
     ~MockVideoCaptureImpl() override {}
 
     // Override Send() to mimic device to send events.
     void Send(IPC::Message* message) override {
-      CHECK(message);
-
       // In this method, messages are sent to the according handlers as if
       // we are the device.
       bool handled = true;
       IPC_BEGIN_MESSAGE_MAP(MockVideoCaptureImpl, *message)
         IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_Start, DeviceStartCapture)
-        IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_Pause, DevicePauseCapture)
-        IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_Stop, DeviceStopCapture)
         IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_BufferReady,
                             DeviceReceiveEmptyBuffer)
         IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_GetDeviceSupportedFormats,
                             DeviceGetSupportedFormats)
         IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_GetDeviceFormatsInUse,
                             DeviceGetFormatsInUse)
         IPC_MESSAGE_UNHANDLED(handled = false)
       IPC_END_MESSAGE_MAP()
       EXPECT_TRUE(handled);
       delete message;
     }
 
     void DeviceStartCapture(int device_id,
                             media::VideoCaptureSessionId session_id,
                             const media::VideoCaptureParams& params) {
       OnStateChanged(VIDEO_CAPTURE_STATE_STARTED);
       capture_params_ = params;
     }
 
-    void DevicePauseCapture(int device_id) {}
-
-    void DeviceStopCapture(int device_id) {
-      OnStateChanged(VIDEO_CAPTURE_STATE_STOPPED);
-    }
-
     void DeviceReceiveEmptyBuffer(int device_id,
                                   int buffer_id,
                                   const gpu::SyncToken& release_sync_token,
                                   double consumer_resource_utilization) {
       received_buffer_count_++;
     }
 
     void DeviceGetSupportedFormats(int device_id,
                                    media::VideoCaptureSessionId session_id) {
       // When the mock message filter receives a request for the device
@@ skipping 25 matching lines @@
       : child_process_(new ChildProcess()),
         message_filter_(new MockVideoCaptureMessageFilter),
         session_id_(1),
         video_capture_impl_(
             new MockVideoCaptureImpl(session_id_, message_filter_.get())) {
     params_small_.requested_format = media::VideoCaptureFormat(
         gfx::Size(176, 144), 30, media::PIXEL_FORMAT_I420);
     params_large_.requested_format = media::VideoCaptureFormat(
         gfx::Size(320, 240), 30, media::PIXEL_FORMAT_I420);
 
+    video_capture_impl_->SetVideoCaptureServiceForTesting(
+        &mock_video_capture_service_);
     video_capture_impl_->device_id_ = 2;
   }
-
   virtual ~VideoCaptureImplTest() {}
 
  protected:
   MOCK_METHOD2(OnFrameReady,
                void(const scoped_refptr<media::VideoFrame>&, base::TimeTicks));
   MOCK_METHOD1(OnStateUpdate, void(VideoCaptureState));
   MOCK_METHOD1(OnDeviceFormatsInUse,
                void(const media::VideoCaptureFormats&));
   MOCK_METHOD1(OnDeviceSupportedFormats,
                void(const media::VideoCaptureFormats&));
@@ skipping 49 matching lines @@
             &VideoCaptureImplTest::OnDeviceFormatsInUse,
             base::Unretained(this));
     video_capture_impl_->GetDeviceFormatsInUse(callback);
   }
 
   const base::MessageLoop message_loop_;
   const std::unique_ptr<ChildProcess> child_process_;
   const scoped_refptr<MockVideoCaptureMessageFilter> message_filter_;
   const media::VideoCaptureSessionId session_id_;
   std::unique_ptr<MockVideoCaptureImpl> video_capture_impl_;
+  MockVideoCaptureService mock_video_capture_service_;
   media::VideoCaptureParams params_small_;
   media::VideoCaptureParams params_large_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureImplTest);
 };
 
 TEST_F(VideoCaptureImplTest, Simple) {
   // Execute SetCapture() and StopCapture() for one client.
   EXPECT_CALL(*this, OnStateUpdate(VIDEO_CAPTURE_STATE_STARTED));
@@ skipping 132 matching lines @@
 
    StartCapture(0, params_small_);
 
    // Receive state change message from browser.
    video_capture_impl_->ReceiveStateChangeMessage(VIDEO_CAPTURE_STATE_ERROR);
 
    StopCapture(0);
 }
 
 }  // namespace content