Adding unittest for the reference counting of WebMediaStreamDescriptor/Source

content/renderer/media/peer_connection_handler_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 <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "content/renderer/media/mock_media_stream_dependency_factory.h"
@@ skipping 13 matching lines @@
 class MockVideoRendererWrapper : public VideoRendererWrapperInterface {
  public:
   virtual cricket::VideoRenderer* renderer() OVERRIDE { return NULL; }
 
  protected:
   virtual ~MockVideoRendererWrapper() {}
 };
 
 }  // namespace webrtc
 
+TEST(PeerConnectionHandlerTest, WebMediaStreamDescriptorMemoryTest) {
+  std::string stream_label("stream-label");
+  std::string video_track_id("video-label");
+  const size_t kSizeOne = 1;
+
+  WebKit::WebMediaStreamSource source;
+  source.initialize(WebKit::WebString::fromUTF8(video_track_id),
+                    WebKit::WebMediaStreamSource::TypeVideo,
+                    WebKit::WebString::fromUTF8("RemoteVideo"));
+
+  WebKit::WebVector<WebKit::WebMediaStreamSource> source_vector(kSizeOne);
+  source_vector[0] = source;
+
+  WebKit::WebMediaStreamDescriptor local_stream;
+  local_stream.initialize(UTF8ToUTF16(stream_label), source_vector);
+
+  WebKit::WebMediaStreamDescriptor copy_1(local_stream);
+  {
+    WebKit::WebMediaStreamDescriptor copy_2(copy_1);
+  }
+}
+
 TEST(PeerConnectionHandlerTest, Basic) {
   MessageLoop loop;
 
   scoped_ptr<WebKit::MockWebPeerConnectionHandlerClient> mock_client(
       new WebKit::MockWebPeerConnectionHandlerClient());
   scoped_refptr<MockMediaStreamImpl> mock_ms_impl(new MockMediaStreamImpl());
   scoped_ptr<MockMediaStreamDependencyFactory> mock_dependency_factory(
       new MockMediaStreamDependencyFactory());
   mock_dependency_factory->CreatePeerConnectionFactory(NULL,
                                                        NULL,
@@ skipping 81 matching lines @@
   EXPECT_EQ(stream_label, mock_peer_connection->stream_label());
   EXPECT_TRUE(mock_peer_connection->stream_changes_committed());
 
   pc_handler->stop();
   EXPECT_FALSE(pc_handler->native_peer_connection_.get());
   // PC handler is expected to be deleted when stop calls
   // MediaStreamImpl::ClosePeerConnection. We own and delete it here instead of
   // in the mock.
   pc_handler.reset();
 }