getUserMeida: report device starting states

content/browser/media/capture/desktop_capture_device_aura_unittest.cc

 // Copyright 2013 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 "content/browser/media/capture/desktop_capture_device_aura.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/synchronization/waitable_event.h"
 #include "content/public/browser/desktop_media_id.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "media/capture/video_capture_types.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/client/window_parenting_client.h"
 #include "ui/aura/test/aura_test_helper.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/test/context_factories_for_test.h"
 #include "ui/wm/core/default_activation_client.h"
 
 using ::testing::_;
 using ::testing::AnyNumber;
+using ::testing::AtMost;
 using ::testing::DoAll;
 using ::testing::Expectation;
 using ::testing::InvokeWithoutArgs;
 using ::testing::SaveArg;
 
 namespace media {
 class VideoFrame;
 }  // namespace media
 
 namespace content {
@@ skipping 11 matching lines @@
                     base::TimeTicks reference_time,
                     base::TimeDelta tiemstamp,
                     int frame_feedback_id));
   MOCK_METHOD0(DoReserveOutputBuffer, void(void));
   MOCK_METHOD0(DoOnIncomingCapturedBuffer, void(void));
   MOCK_METHOD0(DoOnIncomingCapturedVideoFrame, void(void));
   MOCK_METHOD0(DoResurrectLastOutputBuffer, void(void));
   MOCK_METHOD2(OnError,
                void(const tracked_objects::Location& from_here,
                     const std::string& reason));
+  MOCK_METHOD0(OnStarted, void(void));
 
   // Trampoline methods to workaround GMOCK problems with std::unique_ptr<>.
   Buffer ReserveOutputBuffer(const gfx::Size& dimensions,
                              media::VideoPixelFormat format,
                              media::VideoPixelStorage storage,
                              int frame_feedback_id) override {
     EXPECT_EQ(media::PIXEL_FORMAT_I420, format);
     EXPECT_EQ(media::PIXEL_STORAGE_CPU, storage);
     DoReserveOutputBuffer();
     return Buffer();
@@ skipping 79 matching lines @@
 
 TEST_F(DesktopCaptureDeviceAuraTest, StartAndStop) {
   std::unique_ptr<media::VideoCaptureDevice> capture_device =
       DesktopCaptureDeviceAura::Create(
           content::DesktopMediaID::RegisterAuraWindow(
               content::DesktopMediaID::TYPE_SCREEN, root_window()));
   ASSERT_TRUE(capture_device);
 
   std::unique_ptr<MockDeviceClient> client(new MockDeviceClient());
   EXPECT_CALL(*client, OnError(_, _)).Times(0);
+  // |STARTED| is reported asynchronously, which may not be received if capture
+  // is stopped immediately.
+  EXPECT_CALL(*client, OnStarted()).Times(AtMost(1));
 
   media::VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(640, 480);
   capture_params.requested_format.frame_rate = kFrameRate;
   capture_params.requested_format.pixel_format = media::PIXEL_FORMAT_I420;
   capture_device->AllocateAndStart(capture_params, std::move(client));
   capture_device->StopAndDeAllocate();
 }
 
 }  // namespace
 }  // namespace content