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1 /* | |
2 * Copyright (c) 2012 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 | |
11 #include "testing/gmock/include/gmock/gmock.h" | |
12 #include "testing/gtest/include/gtest/gtest.h" | |
13 | |
14 #include "webrtc/base/scoped_ptr.h" | |
15 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" | |
16 #include "webrtc/system_wrappers/include/tick_util.h" | |
17 #include "webrtc/video_engine/call_stats.h" | |
18 | |
19 using ::testing::_; | |
20 using ::testing::AnyNumber; | |
21 using ::testing::Return; | |
22 | |
23 namespace webrtc { | |
24 | |
25 class MockStatsObserver : public CallStatsObserver { | |
26 public: | |
27 MockStatsObserver() {} | |
28 virtual ~MockStatsObserver() {} | |
29 | |
30 MOCK_METHOD2(OnRttUpdate, void(int64_t, int64_t)); | |
31 }; | |
32 | |
33 class CallStatsTest : public ::testing::Test { | |
34 protected: | |
35 virtual void SetUp() { | |
36 TickTime::UseFakeClock(12345); | |
37 call_stats_.reset(new CallStats()); | |
38 } | |
39 rtc::scoped_ptr<CallStats> call_stats_; | |
40 }; | |
41 | |
42 TEST_F(CallStatsTest, AddAndTriggerCallback) { | |
43 MockStatsObserver stats_observer; | |
44 RtcpRttStats* rtcp_rtt_stats = call_stats_->rtcp_rtt_stats(); | |
45 call_stats_->RegisterStatsObserver(&stats_observer); | |
46 TickTime::AdvanceFakeClock(1000); | |
47 EXPECT_EQ(0, rtcp_rtt_stats->LastProcessedRtt()); | |
48 | |
49 const int64_t kRtt = 25; | |
50 rtcp_rtt_stats->OnRttUpdate(kRtt); | |
51 EXPECT_CALL(stats_observer, OnRttUpdate(kRtt, kRtt)).Times(1); | |
52 call_stats_->Process(); | |
53 EXPECT_EQ(kRtt, rtcp_rtt_stats->LastProcessedRtt()); | |
54 | |
55 const int64_t kRttTimeOutMs = 1500 + 10; | |
56 TickTime::AdvanceFakeClock(kRttTimeOutMs); | |
57 EXPECT_CALL(stats_observer, OnRttUpdate(_, _)).Times(0); | |
58 call_stats_->Process(); | |
59 EXPECT_EQ(0, rtcp_rtt_stats->LastProcessedRtt()); | |
60 | |
61 call_stats_->DeregisterStatsObserver(&stats_observer); | |
62 } | |
63 | |
64 TEST_F(CallStatsTest, ProcessTime) { | |
65 MockStatsObserver stats_observer; | |
66 call_stats_->RegisterStatsObserver(&stats_observer); | |
67 RtcpRttStats* rtcp_rtt_stats = call_stats_->rtcp_rtt_stats(); | |
68 rtcp_rtt_stats->OnRttUpdate(100); | |
69 | |
70 // Time isn't updated yet. | |
71 EXPECT_CALL(stats_observer, OnRttUpdate(_, _)).Times(0); | |
72 call_stats_->Process(); | |
73 | |
74 // Advance clock and verify we get an update. | |
75 TickTime::AdvanceFakeClock(1000); | |
76 EXPECT_CALL(stats_observer, OnRttUpdate(_, _)).Times(1); | |
77 call_stats_->Process(); | |
78 | |
79 // Advance clock just too little to get an update. | |
80 TickTime::AdvanceFakeClock(999); | |
81 rtcp_rtt_stats->OnRttUpdate(100); | |
82 EXPECT_CALL(stats_observer, OnRttUpdate(_, _)).Times(0); | |
83 call_stats_->Process(); | |
84 | |
85 // Advance enough to trigger a new update. | |
86 TickTime::AdvanceFakeClock(1); | |
87 EXPECT_CALL(stats_observer, OnRttUpdate(_, _)).Times(1); | |
88 call_stats_->Process(); | |
89 | |
90 call_stats_->DeregisterStatsObserver(&stats_observer); | |
91 } | |
92 | |
93 // Verify all observers get correct estimates and observers can be added and | |
94 // removed. | |
95 TEST_F(CallStatsTest, MultipleObservers) { | |
96 MockStatsObserver stats_observer_1; | |
97 call_stats_->RegisterStatsObserver(&stats_observer_1); | |
98 // Add the second observer twice, there should still be only one report to the | |
99 // observer. | |
100 MockStatsObserver stats_observer_2; | |
101 call_stats_->RegisterStatsObserver(&stats_observer_2); | |
102 call_stats_->RegisterStatsObserver(&stats_observer_2); | |
103 | |
104 RtcpRttStats* rtcp_rtt_stats = call_stats_->rtcp_rtt_stats(); | |
105 const int64_t kRtt = 100; | |
106 rtcp_rtt_stats->OnRttUpdate(kRtt); | |
107 | |
108 // Verify both observers are updated. | |
109 TickTime::AdvanceFakeClock(1000); | |
110 EXPECT_CALL(stats_observer_1, OnRttUpdate(kRtt, kRtt)).Times(1); | |
111 EXPECT_CALL(stats_observer_2, OnRttUpdate(kRtt, kRtt)).Times(1); | |
112 call_stats_->Process(); | |
113 | |
114 // Deregister the second observer and verify update is only sent to the first | |
115 // observer. | |
116 call_stats_->DeregisterStatsObserver(&stats_observer_2); | |
117 rtcp_rtt_stats->OnRttUpdate(kRtt); | |
118 TickTime::AdvanceFakeClock(1000); | |
119 EXPECT_CALL(stats_observer_1, OnRttUpdate(kRtt, kRtt)).Times(1); | |
120 EXPECT_CALL(stats_observer_2, OnRttUpdate(kRtt, kRtt)).Times(0); | |
121 call_stats_->Process(); | |
122 | |
123 // Deregister the first observer. | |
124 call_stats_->DeregisterStatsObserver(&stats_observer_1); | |
125 rtcp_rtt_stats->OnRttUpdate(kRtt); | |
126 TickTime::AdvanceFakeClock(1000); | |
127 EXPECT_CALL(stats_observer_1, OnRttUpdate(kRtt, kRtt)).Times(0); | |
128 EXPECT_CALL(stats_observer_2, OnRttUpdate(kRtt, kRtt)).Times(0); | |
129 call_stats_->Process(); | |
130 } | |
131 | |
132 // Verify increasing and decreasing rtt triggers callbacks with correct values. | |
133 TEST_F(CallStatsTest, ChangeRtt) { | |
134 MockStatsObserver stats_observer; | |
135 call_stats_->RegisterStatsObserver(&stats_observer); | |
136 RtcpRttStats* rtcp_rtt_stats = call_stats_->rtcp_rtt_stats(); | |
137 | |
138 // Advance clock to be ready for an update. | |
139 TickTime::AdvanceFakeClock(1000); | |
140 | |
141 // Set a first value and verify the callback is triggered. | |
142 const int64_t kFirstRtt = 100; | |
143 rtcp_rtt_stats->OnRttUpdate(kFirstRtt); | |
144 EXPECT_CALL(stats_observer, OnRttUpdate(kFirstRtt, kFirstRtt)).Times(1); | |
145 call_stats_->Process(); | |
146 | |
147 // Increase rtt and verify the new value is reported. | |
148 TickTime::AdvanceFakeClock(1000); | |
149 const int64_t kHighRtt = kFirstRtt + 20; | |
150 const int64_t kAvgRtt1 = 103; | |
151 rtcp_rtt_stats->OnRttUpdate(kHighRtt); | |
152 EXPECT_CALL(stats_observer, OnRttUpdate(kAvgRtt1, kHighRtt)).Times(1); | |
153 call_stats_->Process(); | |
154 | |
155 // Increase time enough for a new update, but not too much to make the | |
156 // rtt invalid. Report a lower rtt and verify the old/high value still is sent | |
157 // in the callback. | |
158 TickTime::AdvanceFakeClock(1000); | |
159 const int64_t kLowRtt = kFirstRtt - 20; | |
160 const int64_t kAvgRtt2 = 102; | |
161 rtcp_rtt_stats->OnRttUpdate(kLowRtt); | |
162 EXPECT_CALL(stats_observer, OnRttUpdate(kAvgRtt2, kHighRtt)).Times(1); | |
163 call_stats_->Process(); | |
164 | |
165 // Advance time to make the high report invalid, the lower rtt should now be | |
166 // in the callback. | |
167 TickTime::AdvanceFakeClock(1000); | |
168 const int64_t kAvgRtt3 = 95; | |
169 EXPECT_CALL(stats_observer, OnRttUpdate(kAvgRtt3, kLowRtt)).Times(1); | |
170 call_stats_->Process(); | |
171 | |
172 call_stats_->DeregisterStatsObserver(&stats_observer); | |
173 } | |
174 | |
175 TEST_F(CallStatsTest, LastProcessedRtt) { | |
176 MockStatsObserver stats_observer; | |
177 call_stats_->RegisterStatsObserver(&stats_observer); | |
178 RtcpRttStats* rtcp_rtt_stats = call_stats_->rtcp_rtt_stats(); | |
179 TickTime::AdvanceFakeClock(1000); | |
180 | |
181 // Set a first values and verify that LastProcessedRtt initially returns the | |
182 // average rtt. | |
183 const int64_t kRttLow = 10; | |
184 const int64_t kRttHigh = 30; | |
185 const int64_t kAvgRtt = 20; | |
186 rtcp_rtt_stats->OnRttUpdate(kRttLow); | |
187 rtcp_rtt_stats->OnRttUpdate(kRttHigh); | |
188 EXPECT_CALL(stats_observer, OnRttUpdate(kAvgRtt, kRttHigh)).Times(1); | |
189 call_stats_->Process(); | |
190 EXPECT_EQ(kAvgRtt, rtcp_rtt_stats->LastProcessedRtt()); | |
191 | |
192 // Update values and verify LastProcessedRtt. | |
193 TickTime::AdvanceFakeClock(1000); | |
194 rtcp_rtt_stats->OnRttUpdate(kRttLow); | |
195 rtcp_rtt_stats->OnRttUpdate(kRttHigh); | |
196 EXPECT_CALL(stats_observer, OnRttUpdate(kAvgRtt, kRttHigh)).Times(1); | |
197 call_stats_->Process(); | |
198 EXPECT_EQ(kAvgRtt, rtcp_rtt_stats->LastProcessedRtt()); | |
199 | |
200 call_stats_->DeregisterStatsObserver(&stats_observer); | |
201 } | |
202 | |
203 } // namespace webrtc | |
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