New peerconnection test case, for video stream forwarding.

webrtc/api/peerconnection_unittest.cc

Index: webrtc/api/peerconnection_unittest.cc
diff --git a/webrtc/api/peerconnection_unittest.cc b/webrtc/api/peerconnection_unittest.cc
index 99be22f4591ad70e9c232463a5ec0b46d26bfd42..69eb25cf5450b904c82fda9b91c6914eee64d468 100644
--- a/webrtc/api/peerconnection_unittest.cc
+++ b/webrtc/api/peerconnection_unittest.cc
@@ -1981,6 +1981,40 @@ TEST_F(P2PTestConductor, EarlyWarmupTest) {
                    kMaxWaitForFramesMs);
 }
 
+TEST_F(P2PTestConductor, StreamForwardVideoOnly) {

[perkj_webrtc, 2016/04/21 08:18:28]

Name ForwardVideoOnlyStream? 

[nisse-webrtc, 2016/04/22 11:13:09]

Done.

+  ASSERT_TRUE(CreateTestClients());
+  // One-way stream
+  receiving_client()->set_auto_add_stream(false);
+  // Video only, audio forwarding not expected to work.
+  initializing_client()->AddMediaStream(false, true);
+  initializing_client()->Negotiate();
+
+  ASSERT_TRUE_WAIT(SessionActive(), kMaxWaitForActivationMs);
+  VerifySessionDescriptions();
+
+  ASSERT_TRUE (initializing_client()->can_receive_video());

[pbos-webrtc, 2016/04/21 13:03:23]

git cl format please

[nisse-webrtc, 2016/04/22 11:13:08]

Done.

+  ASSERT_TRUE (receiving_client()->can_receive_video());
+
+  EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionCompleted,
+                 initializing_client()->ice_connection_state(),
+                 kMaxWaitForFramesMs);
+  EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
+                 receiving_client()->ice_connection_state(),
+                 kMaxWaitForFramesMs);
+
+  ASSERT_TRUE(receiving_client()->remote_streams()->count() > 0);
+  EXPECT_TRUE(receiving_client()->remote_streams()->count() == 1);

[perkj_webrtc, 2016/04/21 08:18:28]

nit: ASSERT_TRUE == 1 only. 

[nisse-webrtc, 2016/04/22 11:13:08]

Done.

+
+  // Echo the stream back.
+  receiving_client()->pc()->AddStream(
+      receiving_client()->remote_streams()->at(0));
+  receiving_client()->Negotiate();
+
+  EXPECT_TRUE_WAIT(
+      initializing_client()->VideoFramesReceivedCheck(kEndVideoFrameCount),
+      kMaxWaitForFramesMs);
+}
+
 class IceServerParsingTest : public testing::Test {
  public:
   // Convenience for parsing a single URL.