1 /*
2 * Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10 #include "modules/rtp_rtcp/source/rtcp_packet/remote_estimate.h"
11
12 #include "test/gtest.h"
13
14 namespace webrtc {
15 namespace rtcp {
TEST(RemoteEstimateTest,EncodesCapacityBounds)16 TEST(RemoteEstimateTest, EncodesCapacityBounds) {
17 NetworkStateEstimate src;
18 src.link_capacity_lower = DataRate::KilobitsPerSec(10);
19 src.link_capacity_upper = DataRate::KilobitsPerSec(1000000);
20 rtc::Buffer data = GetRemoteEstimateSerializer()->Serialize(src);
21 NetworkStateEstimate dst;
22 EXPECT_TRUE(GetRemoteEstimateSerializer()->Parse(data, &dst));
23 EXPECT_EQ(src.link_capacity_lower, dst.link_capacity_lower);
24 EXPECT_EQ(src.link_capacity_upper, dst.link_capacity_upper);
25 }
26
TEST(RemoteEstimateTest,ExpandsToPlusInfinity)27 TEST(RemoteEstimateTest, ExpandsToPlusInfinity) {
28 NetworkStateEstimate src;
29 // White box testing: We know that the value is stored in an unsigned 24 int
30 // with kbps resolution. We expected it be represented as plus infinity.
31 src.link_capacity_lower = DataRate::KilobitsPerSec(2 << 24);
32 src.link_capacity_upper = DataRate::PlusInfinity();
33 rtc::Buffer data = GetRemoteEstimateSerializer()->Serialize(src);
34
35 NetworkStateEstimate dst;
36 EXPECT_TRUE(GetRemoteEstimateSerializer()->Parse(data, &dst));
37 EXPECT_TRUE(dst.link_capacity_lower.IsPlusInfinity());
38 EXPECT_TRUE(dst.link_capacity_upper.IsPlusInfinity());
39 }
40
TEST(RemoteEstimateTest,DoesNotEncodeNegative)41 TEST(RemoteEstimateTest, DoesNotEncodeNegative) {
42 NetworkStateEstimate src;
43 src.link_capacity_lower = DataRate::MinusInfinity();
44 src.link_capacity_upper = DataRate::MinusInfinity();
45 rtc::Buffer data = GetRemoteEstimateSerializer()->Serialize(src);
46 // Since MinusInfinity can't be represented, the buffer should be empty.
47 EXPECT_EQ(data.size(), 0u);
48 NetworkStateEstimate dst;
49 dst.link_capacity_lower = DataRate::KilobitsPerSec(300);
50 EXPECT_TRUE(GetRemoteEstimateSerializer()->Parse(data, &dst));
51 // The fields will be left unchanged by the parser as they were not encoded.
52 EXPECT_EQ(dst.link_capacity_lower, DataRate::KilobitsPerSec(300));
53 EXPECT_TRUE(dst.link_capacity_upper.IsMinusInfinity());
54 }
55 } // namespace rtcp
56 } // namespace webrtc
57