getUserMedia: handle the device starting status report.

content/browser/renderer_host/media/video_capture_controller_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 "content/browser/renderer_host/media/video_capture_controller.h"
 
 #include <stdint.h>
 #include <string.h>
 
 #include <memory>
@@ skipping 785 matching lines @@
   // second frame. Since the new |device_client_| is still alive, the second
   // buffer is expected to stay alive.
   EXPECT_CALL(*client_a_, DoBufferDestroyed(_, first_buffer_id)).Times(0);
   EXPECT_CALL(*client_a_, DoBufferDestroyed(_, second_buffer_id)).Times(0);
   controller_->ReturnBuffer(arbitrary_route_id_, client_a_.get(),
                             second_buffer_id, arbitrary_utilization);
   base::RunLoop().RunUntilIdle();
   Mock::VerifyAndClearExpectations(client_a_.get());
 }
 
+// Tests that the VideoCaptureController reports OnStarted() to all clients,
+// even if they connect after VideoCaptureController::OnStarted() has been
+// invoked.
+TEST_F(VideoCaptureControllerTest, OnStartedForMultipleClients) {
+  media::VideoCaptureParams session_100;
+  session_100.requested_format = media::VideoCaptureFormat(
+      gfx::Size(320, 240), 30, media::PIXEL_FORMAT_I420);
+  media::VideoCaptureParams session_200 = session_100;
+  media::VideoCaptureParams session_300 = session_100;
+
+  const VideoCaptureControllerID client_a_route_1(1);
+  const VideoCaptureControllerID client_a_route_2(2);
+  const VideoCaptureControllerID client_b_route_1(3);
+
+  controller_->AddClient(client_a_route_1, client_a_.get(), 100, session_100);
+  controller_->AddClient(client_b_route_1, client_b_.get(), 300, session_300);
+  ASSERT_EQ(2, controller_->GetClientCount());
+
+  {
+    InSequence s;
+    // Simulate the OnStarted event from device.
+    EXPECT_CALL(*client_a_, OnStarted(_));
+    EXPECT_CALL(*client_b_, OnStarted(_));
+    device_client_->OnStarted();
+
+    // VideoCaptureController will take care of the OnStarted event for the
+    // clients who join later.
+    EXPECT_CALL(*client_a_, OnStarted(_));
+    controller_->AddClient(client_a_route_2, client_a_.get(), 200, session_200);
+  }
+}
 }  // namespace content