Rewrite PeerConnection integration tests using better testing practices.

webrtc/pc/peerconnectioninterface_unittest.cc

 /*
  *  Copyright 2012 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.
  */
 
@@ skipping 714 matching lines @@
     config.servers.push_back(server);
     CreatePeerConnection(config, nullptr);
   }
 
   void CreatePeerConnection(PeerConnectionInterface::RTCConfiguration config,
                             webrtc::MediaConstraintsInterface* constraints) {
     std::unique_ptr<cricket::FakePortAllocator> port_allocator(
         new cricket::FakePortAllocator(rtc::Thread::Current(), nullptr));
     port_allocator_ = port_allocator.get();
 
+    // Create certificate generator unless DTLS constraint is explicitly set to
+    // false.
     std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator;
     bool dtls;
     if (FindConstraint(constraints,
                        webrtc::MediaConstraintsInterface::kEnableDtlsSrtp,
                        &dtls,
                        nullptr) && dtls) {
       fake_certificate_generator_ = new FakeRTCCertificateGenerator();
       cert_generator.reset(fake_certificate_generator_);
     }
     pc_ = pc_factory_->CreatePeerConnection(
@@ skipping 897 matching lines @@
   stream->RemoveTrack(stream->GetVideoTracks()[0]);
 
   std::unique_ptr<SessionDescriptionInterface> offer;
   ASSERT_TRUE(DoCreateOffer(&offer, nullptr));
 
   const cricket::MediaContentDescription* video_desc =
       cricket::GetFirstVideoContentDescription(offer->description());
   EXPECT_TRUE(video_desc == nullptr);
 }
 
+// Verify that CreateDtmfSender only succeeds if called with a valid local
+// track. Other aspects of DtmfSenders are tested in
+// peerconnection_integrationtest.cc.
+TEST_F(PeerConnectionInterfaceTest, CreateDtmfSenderWithInvalidParams) {
+  CreatePeerConnection();
+  AddAudioVideoStream(kStreamLabel1, "audio_label", "video_label");
+  EXPECT_EQ(nullptr, pc_->CreateDtmfSender(nullptr));
+  rtc::scoped_refptr<webrtc::AudioTrackInterface> non_localtrack(
+      pc_factory_->CreateAudioTrack("dummy_track", nullptr));
+  EXPECT_EQ(nullptr, pc_->CreateDtmfSender(non_localtrack));
+}
+
 // Test creating a sender with a stream ID, and ensure the ID is populated
 // in the offer.
 TEST_F(PeerConnectionInterfaceTest, CreateSenderWithStream) {
   CreatePeerConnectionWithoutDtls();
   pc_->CreateSender("video", kStreamLabel1);
 
   std::unique_ptr<SessionDescriptionInterface> offer;
   ASSERT_TRUE(DoCreateOffer(&offer, nullptr));
 
   const cricket::MediaContentDescription* video_desc =
@@ skipping 1444 matching lines @@
   CreatePeerConnection();
   // The RtcEventLog will be reset when the PeerConnection is closed.
   pc_->Close();
 
   rtc::PlatformFile file = 0;
   int64_t max_size_bytes = 1024;
   EXPECT_FALSE(pc_->StartRtcEventLog(file, max_size_bytes));
   pc_->StopRtcEventLog();
 }
 
+// Test that ICE renomination isn't offered if it's not enabled in the PC's
+// RTCConfiguration.
+TEST_F(PeerConnectionInterfaceTest, IceRenominationNotOffered) {
+  PeerConnectionInterface::RTCConfiguration config;
+  config.enable_ice_renomination = false;
+  CreatePeerConnection(config, nullptr);
+  AddVoiceStream("foo");
+
+  std::unique_ptr<SessionDescriptionInterface> offer;
+  ASSERT_TRUE(DoCreateOffer(&offer, nullptr));
+  cricket::SessionDescription* desc = offer->description();
+  EXPECT_EQ(1u, desc->transport_infos().size());
+  EXPECT_FALSE(
+      desc->transport_infos()[0].description.GetIceParameters().renomination);
+}
+
+// Test that the ICE renomination option is present in generated offers/answers
+// if it's enabled in the PC's RTCConfiguration.
+TEST_F(PeerConnectionInterfaceTest, IceRenominationOptionInOfferAndAnswer) {
+  PeerConnectionInterface::RTCConfiguration config;
+  config.enable_ice_renomination = true;
+  CreatePeerConnection(config, nullptr);
+  AddVoiceStream("foo");
+
+  std::unique_ptr<SessionDescriptionInterface> offer;
+  ASSERT_TRUE(DoCreateOffer(&offer, nullptr));
+  cricket::SessionDescription* desc = offer->description();
+  EXPECT_EQ(1u, desc->transport_infos().size());
+  EXPECT_TRUE(
+      desc->transport_infos()[0].description.GetIceParameters().renomination);
+
+  // Set the offer as a remote description, then create an answer and ensure it
+  // has the renomination flag too.
+  EXPECT_TRUE(DoSetRemoteDescription(offer.release()));
+  std::unique_ptr<SessionDescriptionInterface> answer;
+  ASSERT_TRUE(DoCreateAnswer(&answer, nullptr));
+  desc = answer->description();
+  EXPECT_EQ(1u, desc->transport_infos().size());
+  EXPECT_TRUE(
+      desc->transport_infos()[0].description.GetIceParameters().renomination);
+}
+
+// Test that if CreateOffer is called with the deprecated "offer to receive
+// audio/video" constraints, they're processed and result in an offer with
+// audio/video sections just as if RTCOfferAnswerOptions had been used.
+TEST_F(PeerConnectionInterfaceTest, CreateOfferWithOfferToReceiveConstraints) {
+  CreatePeerConnection();
+
+  FakeConstraints constraints;
+  constraints.SetMandatoryReceiveAudio(true);
+  constraints.SetMandatoryReceiveVideo(true);
+  std::unique_ptr<SessionDescriptionInterface> offer;
+  ASSERT_TRUE(DoCreateOffer(&offer, &constraints));
+
+  cricket::SessionDescription* desc = offer->description();
+  const cricket::ContentInfo* audio = cricket::GetFirstAudioContent(desc);
+  const cricket::ContentInfo* video = cricket::GetFirstVideoContent(desc);
+  ASSERT_NE(nullptr, audio);
+  ASSERT_NE(nullptr, video);
+  EXPECT_FALSE(audio->rejected);
+  EXPECT_FALSE(video->rejected);
+}
+
+// Test that if CreateAnswer is called with the deprecated "offer to receive
+// audio/video" constraints, they're processed and can be used to reject an
+// offered m= section just as can be done with RTCOfferAnswerOptions;
+TEST_F(PeerConnectionInterfaceTest, CreateAnswerWithOfferToReceiveConstraints) {
+  CreatePeerConnection();
+
+  // First, create an offer with audio/video and apply it as a remote
+  // description.
+  FakeConstraints constraints;
+  constraints.SetMandatoryReceiveAudio(true);
+  constraints.SetMandatoryReceiveVideo(true);
+  std::unique_ptr<SessionDescriptionInterface> offer;
+  ASSERT_TRUE(DoCreateOffer(&offer, &constraints));
+  EXPECT_TRUE(DoSetRemoteDescription(offer.release()));
+
+  // Now create answer that rejects audio/video.
+  constraints.SetMandatoryReceiveAudio(false);
+  constraints.SetMandatoryReceiveVideo(false);
+  std::unique_ptr<SessionDescriptionInterface> answer;
+  ASSERT_TRUE(DoCreateAnswer(&answer, &constraints));
+
+  cricket::SessionDescription* desc = answer->description();
+  const cricket::ContentInfo* audio = cricket::GetFirstAudioContent(desc);
+  const cricket::ContentInfo* video = cricket::GetFirstVideoContent(desc);
+  ASSERT_NE(nullptr, audio);
+  ASSERT_NE(nullptr, video);
+  EXPECT_TRUE(audio->rejected);
+  EXPECT_TRUE(video->rejected);
+}
+
 class PeerConnectionMediaConfigTest : public testing::Test {
  protected:
   void SetUp() override {
     pcf_ = new rtc::RefCountedObject<PeerConnectionFactoryForTest>();
     pcf_->Initialize();
   }
   const cricket::MediaConfig& TestCreatePeerConnection(
       const PeerConnectionInterface::RTCConfiguration& config,
       const MediaConstraintsInterface *constraints) {
     pcf_->create_media_controller_called_ = false;
@@ skipping 274 matching lines @@
   EXPECT_NE(a, f);
 
   PeerConnectionInterface::RTCConfiguration g;
   g.disable_ipv6 = true;
   EXPECT_NE(a, g);
 
   PeerConnectionInterface::RTCConfiguration h(
       PeerConnectionInterface::RTCConfigurationType::kAggressive);
   EXPECT_NE(a, h);
 }