Adding "adapter" ORTC objects on top of ChannelManager/BaseChannel/etc.

webrtc/ortc/rtptransportcontroller_unittest.cc

+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <memory>
+
+#include "webrtc/base/gunit.h"
+#include "webrtc/media/base/fakemediaengine.h"
+#include "webrtc/ortc/ortcfactory.h"
+#include "webrtc/ortc/testrtpparameters.h"
+#include "webrtc/p2p/base/fakepackettransport.h"
+
+namespace webrtc {
+
+// This test uses fake packet transports and a fake media engine, in order to
+// test the RtpTransportController at only an API level. Any end-to-end test
+// should go in ortcfactory_integrationtest.cc instead.
+//
+// Currently, this test mainly focuses on the limitations of the "adapter"
+// RtpTransportController implementation. Only one of each type of
+// sender/receiver can be created, and the sender/receiver of the same media
+// type must use the same transport.
+class RtpTransportControllerTest : public testing::Test {
+ public:
+  RtpTransportControllerTest() {
+    // Note: This doesn't need to use fake network classes, since it uses
+    // FakePacketTransports.
+    auto result =
+        OrtcFactory::Create(nullptr, nullptr, nullptr, nullptr, nullptr,
+                            std::unique_ptr<cricket::MediaEngineInterface>(
+                                new cricket::FakeMediaEngine()));
+    ortc_factory_ = result.MoveValue();
+    rtp_transport_controller_ =
+        ortc_factory_->CreateRtpTransportController().MoveValue();
+  }
+
+ protected:
+  std::unique_ptr<OrtcFactoryInterface> ortc_factory_;
+  std::unique_ptr<RtpTransportControllerInterface> rtp_transport_controller_;
+};
+
+TEST_F(RtpTransportControllerTest, GetTransports) {
+  rtc::FakePacketTransport packet_transport1("one");
+  rtc::FakePacketTransport packet_transport2("two");
+
+  auto rtp_transport_result1 = ortc_factory_->CreateRtpTransport(
+      MakeRtcpMuxParameters(), &packet_transport1, nullptr,
+      rtp_transport_controller_.get());
+  ASSERT_TRUE(rtp_transport_result1.ok());
+
+  auto rtp_transport_result2 = ortc_factory_->CreateRtpTransport(
+      MakeRtcpMuxParameters(), &packet_transport2, nullptr,
+      rtp_transport_controller_.get());
+  ASSERT_TRUE(rtp_transport_result2.ok());
+
+  auto returned_transports = rtp_transport_controller_->GetTransports();
+  ASSERT_EQ(2u, returned_transports.size());
+  EXPECT_EQ(rtp_transport_result1.value().get(), returned_transports[0]);
+  EXPECT_EQ(rtp_transport_result2.value().get(), returned_transports[1]);
+
+  // If a transport is deleted, it shouldn't be returned any more.
+  rtp_transport_result1.MoveValue().reset();
+  returned_transports = rtp_transport_controller_->GetTransports();
+  ASSERT_EQ(1u, returned_transports.size());
+  EXPECT_EQ(rtp_transport_result2.value().get(), returned_transports[0]);
+}
+
+// Create RtpSenders and RtpReceivers on top of RtpTransports controlled by the
+// same RtpTransportController. Currently only one each of audio/video is
+// supported.
+TEST_F(RtpTransportControllerTest, AttachMultipleSendersAndReceivers) {
+  rtc::FakePacketTransport audio_packet_transport("audio");
+  rtc::FakePacketTransport video_packet_transport("video");
+
+  auto audio_rtp_transport_result = ortc_factory_->CreateRtpTransport(
+      MakeRtcpMuxParameters(), &audio_packet_transport, nullptr,
+      rtp_transport_controller_.get());
+  ASSERT_TRUE(audio_rtp_transport_result.ok());
+  auto audio_rtp_transport = audio_rtp_transport_result.MoveValue();
+
+  auto video_rtp_transport_result = ortc_factory_->CreateRtpTransport(
+      MakeRtcpMuxParameters(), &video_packet_transport, nullptr,
+      rtp_transport_controller_.get());
+  ASSERT_TRUE(video_rtp_transport_result.ok());
+  auto video_rtp_transport = video_rtp_transport_result.MoveValue();
+
+  auto audio_sender_result = ortc_factory_->CreateRtpSender(
+      cricket::MEDIA_TYPE_AUDIO, audio_rtp_transport.get());
+  EXPECT_TRUE(audio_sender_result.ok());
+  auto audio_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_AUDIO, audio_rtp_transport.get());
+  EXPECT_TRUE(audio_receiver_result.ok());
+  auto video_sender_result = ortc_factory_->CreateRtpSender(
+      cricket::MEDIA_TYPE_VIDEO, video_rtp_transport.get());
+  EXPECT_TRUE(video_sender_result.ok());
+  auto video_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_VIDEO, video_rtp_transport.get());
+  EXPECT_TRUE(video_receiver_result.ok());
+
+  // Now that we have one each of audio/video senders/receivers, trying to
+  // create more on top of the same controller is expected to fail.
+  // TODO(deadbeef): Update this test once multiple senders/receivers on top of
+  // the same controller is supported.
+  auto failed_sender_result = ortc_factory_->CreateRtpSender(
+      cricket::MEDIA_TYPE_AUDIO, audio_rtp_transport.get());
+  EXPECT_EQ(RTCErrorType::UNSUPPORTED_OPERATION,
+            failed_sender_result.error().type());
+  auto failed_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_AUDIO, audio_rtp_transport.get());
+  EXPECT_EQ(RTCErrorType::UNSUPPORTED_OPERATION,
+            failed_receiver_result.error().type());
+  failed_sender_result = ortc_factory_->CreateRtpSender(
+      cricket::MEDIA_TYPE_VIDEO, video_rtp_transport.get());
+  EXPECT_EQ(RTCErrorType::UNSUPPORTED_OPERATION,
+            failed_sender_result.error().type());
+  failed_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_VIDEO, video_rtp_transport.get());
+  EXPECT_EQ(RTCErrorType::UNSUPPORTED_OPERATION,
+            failed_receiver_result.error().type());
+
+  // If we destroy the existing sender/receiver using a transport controller,
+  // we should be able to make a new one, despite the above limitation.
+  audio_sender_result.MoveValue().reset();
+  audio_sender_result = ortc_factory_->CreateRtpSender(
+      cricket::MEDIA_TYPE_AUDIO, audio_rtp_transport.get());
+  EXPECT_TRUE(audio_sender_result.ok());
+  audio_receiver_result.MoveValue().reset();
+  audio_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_AUDIO, audio_rtp_transport.get());
+  EXPECT_TRUE(audio_receiver_result.ok());
+  video_sender_result.MoveValue().reset();
+  video_sender_result = ortc_factory_->CreateRtpSender(
+      cricket::MEDIA_TYPE_VIDEO, video_rtp_transport.get());
+  EXPECT_TRUE(video_sender_result.ok());
+  video_receiver_result.MoveValue().reset();
+  video_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_VIDEO, video_rtp_transport.get());
+  EXPECT_TRUE(video_receiver_result.ok());
+}
+
+// Given the current limitations of the BaseChannel-based implementation, it's
+// not possible for an audio sender and receiver to use different RtpTransports.
+// TODO(deadbeef): Once this is supported, update/replace this test.
+TEST_F(RtpTransportControllerTest,
+       SenderAndReceiverUsingDifferentTransportsUnsupported) {
+  rtc::FakePacketTransport packet_transport1("one");
+  rtc::FakePacketTransport packet_transport2("two");
+
+  auto rtp_transport_result1 = ortc_factory_->CreateRtpTransport(
+      MakeRtcpMuxParameters(), &packet_transport1, nullptr,
+      rtp_transport_controller_.get());
+  ASSERT_TRUE(rtp_transport_result1.ok());
+  auto rtp_transport1 = rtp_transport_result1.MoveValue();
+
+  auto rtp_transport_result2 = ortc_factory_->CreateRtpTransport(
+      MakeRtcpMuxParameters(), &packet_transport2, nullptr,
+      rtp_transport_controller_.get());
+  ASSERT_TRUE(rtp_transport_result2.ok());
+  auto rtp_transport2 = rtp_transport_result2.MoveValue();
+
+  // Create an audio sender on transport 1, then try to create a receiver on 2.
+  auto audio_sender_result = ortc_factory_->CreateRtpSender(
+      cricket::MEDIA_TYPE_AUDIO, rtp_transport1.get());
+  EXPECT_TRUE(audio_sender_result.ok());
+  auto audio_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_AUDIO, rtp_transport2.get());
+  EXPECT_EQ(RTCErrorType::UNSUPPORTED_OPERATION,
+            audio_receiver_result.error().type());
+  // Delete the sender; now we should be ok to create the receiver on 2.
+  audio_sender_result.MoveValue().reset();
+  audio_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_AUDIO, rtp_transport2.get());
+  EXPECT_TRUE(audio_receiver_result.ok());
+
+  // Do the same thing for video, reversing 1 and 2 (for variety).
+  auto video_sender_result = ortc_factory_->CreateRtpSender(
+      cricket::MEDIA_TYPE_VIDEO, rtp_transport2.get());
+  EXPECT_TRUE(video_sender_result.ok());
+  auto video_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_VIDEO, rtp_transport1.get());
+  EXPECT_EQ(RTCErrorType::UNSUPPORTED_OPERATION,
+            video_receiver_result.error().type());
+  video_sender_result.MoveValue().reset();
+  video_receiver_result = ortc_factory_->CreateRtpReceiver(
+      cricket::MEDIA_TYPE_VIDEO, rtp_transport1.get());
+  EXPECT_TRUE(video_receiver_result.ok());
+}
+
+}  // namespace webrtc