[rtp_rtcp] rtcp::Sdes moved into own file

webrtc/modules/rtp_rtcp/source/rtcp_packet/sdes_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/sdes.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+#include "webrtc/modules/rtp_rtcp/source/byte_io.h"
+#include "webrtc/test/rtcp_packet_parser.h"
+
+using webrtc::rtcp::RawPacket;
+using webrtc::rtcp::Sdes;
+using webrtc::test::RtcpPacketParser;
+
+namespace webrtc {
+const uint32_t kSenderSsrc = 0x12345678;
+
+TEST(RtcpPacketSdesTest, WithOneChunk) {
+  Sdes sdes;
+  EXPECT_TRUE(sdes.WithCName(kSenderSsrc, "alice@host"));
+
+  rtc::scoped_ptr<RawPacket> packet(sdes.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(1, parser.sdes()->num_packets());
+  EXPECT_EQ(1, parser.sdes_chunk()->num_packets());
+  EXPECT_EQ(kSenderSsrc, parser.sdes_chunk()->Ssrc());
+  EXPECT_EQ("alice@host", parser.sdes_chunk()->Cname());
+}
+
+TEST(RtcpPacketSdesTest, WithMultipleChunks) {
+  Sdes sdes;
+  EXPECT_TRUE(sdes.WithCName(kSenderSsrc, "a"));
+  EXPECT_TRUE(sdes.WithCName(kSenderSsrc + 1, "ab"));
+  EXPECT_TRUE(sdes.WithCName(kSenderSsrc + 2, "abc"));
+  EXPECT_TRUE(sdes.WithCName(kSenderSsrc + 3, "abcd"));
+  EXPECT_TRUE(sdes.WithCName(kSenderSsrc + 4, "abcde"));
+  EXPECT_TRUE(sdes.WithCName(kSenderSsrc + 5, "abcdef"));
+
+  rtc::scoped_ptr<RawPacket> packet(sdes.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(1, parser.sdes()->num_packets());
+  EXPECT_EQ(6, parser.sdes_chunk()->num_packets());
+  EXPECT_EQ(kSenderSsrc + 5, parser.sdes_chunk()->Ssrc());
+  EXPECT_EQ("abcdef", parser.sdes_chunk()->Cname());
+}
+
+TEST(RtcpPacketSdesTest, WithTooManyChunks) {
+  Sdes sdes;
+  const int kMaxChunks = (1 << 5) - 1;
+  for (int i = 0; i < kMaxChunks; ++i) {
+    uint32_t ssrc = kSenderSsrc + i;
+    std::ostringstream oss;
+    oss << "cname" << i;
+    EXPECT_TRUE(sdes.WithCName(ssrc, oss.str()));
+  }
+  EXPECT_FALSE(sdes.WithCName(kSenderSsrc + kMaxChunks, "foo"));
+}
+
+TEST(RtcpPacketSdesTest, CnameItemWithEmptyString) {
+  Sdes sdes;
+  EXPECT_TRUE(sdes.WithCName(kSenderSsrc, ""));
+
+  rtc::scoped_ptr<RawPacket> packet(sdes.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(1, parser.sdes()->num_packets());
+  EXPECT_EQ(1, parser.sdes_chunk()->num_packets());
+  EXPECT_EQ(kSenderSsrc, parser.sdes_chunk()->Ssrc());
+  EXPECT_EQ("", parser.sdes_chunk()->Cname());
+}
+
+}  // namespace webrtc