[rtp_rtcp] rtcp::Empty moved into own file and renamed to CompoundPacket on the way

webrtc/modules/rtp_rtcp/source/rtcp_packet/compound_packet_unittest.cc

+/*
+ *  Copyright (c) 2016 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 "webrtc/modules/rtp_rtcp/source/rtcp_packet/compound_packet.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h"
+#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/bye.h"
+#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.h"
+#include "webrtc/test/rtcp_packet_parser.h"
+
+using webrtc::rtcp::Bye;
+using webrtc::rtcp::CompoundPacket;
+using webrtc::rtcp::Fir;
+using webrtc::rtcp::RawPacket;
+using webrtc::rtcp::ReceiverReport;
+using webrtc::rtcp::ReportBlock;
+using webrtc::rtcp::SenderReport;
+using webrtc::test::RtcpPacketParser;
+
+namespace webrtc {
+
+const uint32_t kSenderSsrc = 0x12345678;
+
+TEST(RtcpCompoundPacketTest, AppendPacket) {
+  Fir fir;
+  ReportBlock rb;
+  ReceiverReport rr;
+  rr.From(kSenderSsrc);
+  EXPECT_TRUE(rr.WithReportBlock(rb));
+  rr.Append(&fir);
+
+  rtc::scoped_ptr<RawPacket> packet(rr.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(1, parser.receiver_report()->num_packets());
+  EXPECT_EQ(kSenderSsrc, parser.receiver_report()->Ssrc());
+  EXPECT_EQ(1, parser.report_block()->num_packets());
+  EXPECT_EQ(1, parser.fir()->num_packets());
+}
+
+TEST(RtcpCompoundPacketTest, AppendPacketOnEmpty) {
+  CompoundPacket empty;
+  ReceiverReport rr;
+  rr.From(kSenderSsrc);
+  empty.Append(&rr);
+
+  rtc::scoped_ptr<RawPacket> packet(empty.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(1, parser.receiver_report()->num_packets());
+  EXPECT_EQ(0, parser.report_block()->num_packets());
+}
+
+TEST(RtcpCompoundPacketTest, AppendPacketWithOwnAppendedPacket) {
+  Fir fir;
+  Bye bye;
+  ReportBlock rb;
+
+  ReceiverReport rr;
+  EXPECT_TRUE(rr.WithReportBlock(rb));
+  rr.Append(&fir);
+
+  SenderReport sr;
+  sr.Append(&bye);
+  sr.Append(&rr);
+
+  rtc::scoped_ptr<RawPacket> packet(sr.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(1, parser.sender_report()->num_packets());
+  EXPECT_EQ(1, parser.receiver_report()->num_packets());
+  EXPECT_EQ(1, parser.report_block()->num_packets());
+  EXPECT_EQ(1, parser.bye()->num_packets());
+  EXPECT_EQ(1, parser.fir()->num_packets());
+}
+
+TEST(RtcpCompoundPacketTest, BuildWithInputBuffer) {
+  Fir fir;
+  ReportBlock rb;
+  ReceiverReport rr;
+  rr.From(kSenderSsrc);
+  EXPECT_TRUE(rr.WithReportBlock(rb));
+  rr.Append(&fir);
+
+  const size_t kRrLength = 8;
+  const size_t kReportBlockLength = 24;
+  const size_t kFirLength = 20;
+
+  class Verifier : public rtcp::RtcpPacket::PacketReadyCallback {
+   public:
+    void OnPacketReady(uint8_t* data, size_t length) override {
+      RtcpPacketParser parser;
+      parser.Parse(data, length);
+      EXPECT_EQ(1, parser.receiver_report()->num_packets());
+      EXPECT_EQ(1, parser.report_block()->num_packets());
+      EXPECT_EQ(1, parser.fir()->num_packets());
+      ++packets_created_;
+    }
+
+    int packets_created_ = 0;
+  } verifier;
+  const size_t kBufferSize = kRrLength + kReportBlockLength + kFirLength;
+  uint8_t buffer[kBufferSize];
+  EXPECT_TRUE(rr.BuildExternalBuffer(buffer, kBufferSize, &verifier));
+  EXPECT_EQ(1, verifier.packets_created_);
+}
+
+TEST(RtcpCompoundPacketTest, BuildWithTooSmallBuffer_FragmentedSend) {
+  Fir fir;
+  ReportBlock rb;
+  ReceiverReport rr;
+  rr.From(kSenderSsrc);
+  EXPECT_TRUE(rr.WithReportBlock(rb));
+  rr.Append(&fir);
+
+  const size_t kRrLength = 8;
+  const size_t kReportBlockLength = 24;
+
+  class Verifier : public rtcp::RtcpPacket::PacketReadyCallback {
+   public:
+    void OnPacketReady(uint8_t* data, size_t length) override {
+      RtcpPacketParser parser;
+      parser.Parse(data, length);
+      switch (packets_created_++) {
+        case 0:
+          EXPECT_EQ(1, parser.receiver_report()->num_packets());
+          EXPECT_EQ(1, parser.report_block()->num_packets());
+          EXPECT_EQ(0, parser.fir()->num_packets());
+          break;
+        case 1:
+          EXPECT_EQ(0, parser.receiver_report()->num_packets());
+          EXPECT_EQ(0, parser.report_block()->num_packets());
+          EXPECT_EQ(1, parser.fir()->num_packets());
+          break;
+        default:
+          ADD_FAILURE() << "OnPacketReady not expected to be called "
+                        << packets_created_ << " times.";
+      }
+    }
+
+    int packets_created_ = 0;
+  } verifier;
+  const size_t kBufferSize = kRrLength + kReportBlockLength;
+  uint8_t buffer[kBufferSize];
+  EXPECT_TRUE(rr.BuildExternalBuffer(buffer, kBufferSize, &verifier));
+  EXPECT_EQ(2, verifier.packets_created_);
+}
+
+}  // namespace webrtc