blob: 9be5b21ea69522c71cde1a1562b971fc15731262 [file] [log] [blame]
/*
* Copyright (c) 2018 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 "modules/congestion_controller/goog_cc/congestion_window_pushback_controller.h"
#include "api/transport/field_trial_based_config.h"
#include "test/gmock.h"
#include "test/gtest.h"
using testing::_;
namespace webrtc {
namespace test {
class CongestionWindowPushbackControllerTest : public ::testing::Test {
public:
CongestionWindowPushbackControllerTest()
: cwnd_controller_(&field_trial_based_config_) {}
protected:
FieldTrialBasedConfig field_trial_based_config_;
CongestionWindowPushbackController cwnd_controller_;
};
TEST_F(CongestionWindowPushbackControllerTest, FullCongestionWindow) {
cwnd_controller_.UpdateOutstandingData(100000);
cwnd_controller_.UpdateMaxOutstandingData(50000);
uint32_t bitrate_bps = 80000;
bitrate_bps = cwnd_controller_.UpdateTargetBitrate(bitrate_bps);
EXPECT_EQ(72000u, bitrate_bps);
cwnd_controller_.UpdateMaxOutstandingData(50000);
bitrate_bps = cwnd_controller_.UpdateTargetBitrate(bitrate_bps);
EXPECT_EQ(static_cast<uint32_t>(72000 * 0.9 * 0.9), bitrate_bps);
}
TEST_F(CongestionWindowPushbackControllerTest, NormalCongestionWindow) {
cwnd_controller_.UpdateOutstandingData(100000);
cwnd_controller_.SetDataWindow(DataSize::bytes(200000));
uint32_t bitrate_bps = 80000;
bitrate_bps = cwnd_controller_.UpdateTargetBitrate(bitrate_bps);
EXPECT_EQ(80000u, bitrate_bps);
cwnd_controller_.UpdateMaxOutstandingData(20000);
bitrate_bps = cwnd_controller_.UpdateTargetBitrate(bitrate_bps);
EXPECT_EQ(80000u, bitrate_bps);
}
TEST_F(CongestionWindowPushbackControllerTest, LowBitrate) {
cwnd_controller_.UpdateOutstandingData(100000);
cwnd_controller_.SetDataWindow(DataSize::bytes(50000));
uint32_t bitrate_bps = 35000;
bitrate_bps = cwnd_controller_.UpdateTargetBitrate(bitrate_bps);
EXPECT_EQ(static_cast<uint32_t>(35000 * 0.9), bitrate_bps);
cwnd_controller_.UpdateMaxOutstandingData(20000);
bitrate_bps = cwnd_controller_.UpdateTargetBitrate(bitrate_bps);
EXPECT_EQ(30000u, bitrate_bps);
}
} // namespace test
} // namespace webrtc