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/*
* Copyright (c) 2021 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 "audio/test/audio_end_to_end_test.h"
#include "system_wrappers/include/sleep.h"
#include "test/gtest.h"
namespace webrtc {
namespace test {
using NackTest = CallTest;
TEST_F(NackTest, ShouldNackInLossyNetwork) {
class NackTest : public AudioEndToEndTest {
public:
const int kTestDurationMs = 2000;
const int64_t kRttMs = 30;
const int64_t kLossPercent = 30;
const int kNackHistoryMs = 1000;
BuiltInNetworkBehaviorConfig GetSendTransportConfig() const override {
BuiltInNetworkBehaviorConfig pipe_config;
pipe_config.queue_delay_ms = kRttMs / 2;
pipe_config.loss_percent = kLossPercent;
return pipe_config;
}
void ModifyAudioConfigs(AudioSendStream::Config* send_config,
std::vector<AudioReceiveStreamInterface::Config>*
receive_configs) override {
ASSERT_EQ(receive_configs->size(), 1U);
(*receive_configs)[0].rtp.nack.rtp_history_ms = kNackHistoryMs;
AudioEndToEndTest::ModifyAudioConfigs(send_config, receive_configs);
}
void PerformTest() override { SleepMs(kTestDurationMs); }
void OnStreamsStopped() override {
AudioReceiveStreamInterface::Stats recv_stats =
receive_stream()->GetStats(/*get_and_clear_legacy_stats=*/true);
EXPECT_GT(recv_stats.nacks_sent, 0U);
AudioSendStream::Stats send_stats = send_stream()->GetStats();
EXPECT_GT(send_stats.retransmitted_packets_sent, 0U);
EXPECT_GT(send_stats.nacks_rcvd, 0U);
}
} test;
RunBaseTest(&test);
}
} // namespace test
} // namespace webrtc
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