Adding a MediaStream parameter to createSender.

talk/app/webrtc/peerconnectioninterface_unittest.cc

 /*
  * libjingle
  * Copyright 2012 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 1180 matching lines @@
   stream->RemoveTrack(stream->GetVideoTracks()[0]);
 
   scoped_ptr<SessionDescriptionInterface> offer;
   ASSERT_TRUE(DoCreateOffer(offer.use(), nullptr));
 
   const cricket::MediaContentDescription* video_desc =
       cricket::GetFirstVideoContentDescription(offer->description());
   EXPECT_TRUE(video_desc == nullptr);
 }
 
+// Test creating a sender with a stream ID, and ensure the ID is populated
+// in the offer.
+TEST_F(PeerConnectionInterfaceTest, CreateSenderWithStream) {
+  CreatePeerConnection();
+  pc_->CreateSender("video", kStreamLabel1);
+
+  scoped_ptr<SessionDescriptionInterface> offer;
+  ASSERT_TRUE(DoCreateOffer(offer.use(), nullptr));
+
+  const cricket::MediaContentDescription* video_desc =
+      cricket::GetFirstVideoContentDescription(offer->description());
+  ASSERT_TRUE(video_desc != nullptr);
+  ASSERT_EQ(1u, video_desc->streams().size());
+  EXPECT_EQ(kStreamLabel1, video_desc->streams()[0].sync_label);
+}
+
 // Test that we can specify a certain track that we want statistics about.
 TEST_F(PeerConnectionInterfaceTest, GetStatsForSpecificTrack) {
   InitiateCall();
   ASSERT_LT(0u, pc_->remote_streams()->count());
   ASSERT_LT(0u, pc_->remote_streams()->at(0)->GetAudioTracks().size());
   scoped_refptr<MediaStreamTrackInterface> remote_audio =
       pc_->remote_streams()->at(0)->GetAudioTracks()[0];
   EXPECT_TRUE(DoGetStats(remote_audio));
 
   // Remove the stream. Since we are sending to our selves the local
@@ skipping 1180 matching lines @@
   FakeConstraints updated_answer_c;
   answer_c.SetMandatoryReceiveAudio(false);
   answer_c.SetMandatoryReceiveVideo(false);
 
   cricket::MediaSessionOptions updated_answer_options;
   EXPECT_TRUE(
       ParseConstraintsForAnswer(&updated_answer_c, &updated_answer_options));
   EXPECT_TRUE(updated_answer_options.has_audio());
   EXPECT_TRUE(updated_answer_options.has_video());
 }