140 lines
5.0 KiB
C++
140 lines
5.0 KiB
C++
/*
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* Copyright 2019 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/experiments/quality_rampup_experiment.h"
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#include "test/field_trial.h"
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#include "test/gtest.h"
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namespace webrtc {
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namespace {
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class QualityRampupExperimentTest : public ::testing::Test {
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protected:
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int64_t NowMs() const { return current_ms_; }
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int64_t AdvanceMs(int64_t delta_ms) {
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current_ms_ += delta_ms;
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return current_ms_;
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}
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int64_t current_ms_ = 2345;
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};
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TEST_F(QualityRampupExperimentTest, ValuesNotSetByDefault) {
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const auto settings = QualityRampupExperiment::ParseSettings();
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EXPECT_FALSE(settings.MinPixels());
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EXPECT_FALSE(settings.MinDurationMs());
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EXPECT_FALSE(settings.MaxBitrateFactor());
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}
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TEST_F(QualityRampupExperimentTest, ParseMinPixels) {
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test::ScopedFieldTrials field_trials(
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"WebRTC-Video-QualityRampupSettings/min_pixels:10000/");
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EXPECT_EQ(10000, QualityRampupExperiment::ParseSettings().MinPixels());
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}
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TEST_F(QualityRampupExperimentTest, ParseMinDuration) {
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test::ScopedFieldTrials field_trials(
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"WebRTC-Video-QualityRampupSettings/min_duration_ms:987/");
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EXPECT_EQ(987, QualityRampupExperiment::ParseSettings().MinDurationMs());
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}
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TEST_F(QualityRampupExperimentTest, ParseMaxBitrateFactor) {
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test::ScopedFieldTrials field_trials(
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"WebRTC-Video-QualityRampupSettings/max_bitrate_factor:1.23/");
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EXPECT_EQ(1.23, QualityRampupExperiment::ParseSettings().MaxBitrateFactor());
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}
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TEST_F(QualityRampupExperimentTest, ReportsBwHighWhenDurationPassed) {
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test::ScopedFieldTrials field_trials(
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"WebRTC-Video-QualityRampupSettings/"
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"min_pixels:10000,min_duration_ms:2000/");
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auto exp = QualityRampupExperiment::ParseSettings();
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EXPECT_EQ(10000, exp.MinPixels());
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EXPECT_EQ(2000, exp.MinDurationMs());
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const uint32_t kMaxKbps = 800;
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exp.SetMaxBitrate(/*pixels*/ 10000, kMaxKbps);
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const uint32_t kAvailableKbps = kMaxKbps;
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EXPECT_FALSE(exp.BwHigh(NowMs(), kAvailableKbps));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(2000 - 1), kAvailableKbps));
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EXPECT_TRUE(exp.BwHigh(AdvanceMs(1), kAvailableKbps));
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}
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TEST_F(QualityRampupExperimentTest, UsesMaxSetBitrate) {
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test::ScopedFieldTrials field_trials(
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"WebRTC-Video-QualityRampupSettings/"
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"min_pixels:10000,min_duration_ms:2000/");
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auto exp = QualityRampupExperiment::ParseSettings();
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const uint32_t kMaxKbps = 800;
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exp.SetMaxBitrate(/*pixels*/ 10000, kMaxKbps);
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exp.SetMaxBitrate(/*pixels*/ 10000, kMaxKbps - 1);
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EXPECT_FALSE(exp.BwHigh(NowMs(), kMaxKbps - 1));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(2000), kMaxKbps - 1));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(1), kMaxKbps));
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EXPECT_TRUE(exp.BwHigh(AdvanceMs(2000), kMaxKbps));
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}
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TEST_F(QualityRampupExperimentTest, DoesNotReportBwHighIfBelowMinPixels) {
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test::ScopedFieldTrials field_trials(
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"WebRTC-Video-QualityRampupSettings/"
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"min_pixels:10000,min_duration_ms:2000/");
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auto exp = QualityRampupExperiment::ParseSettings();
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const uint32_t kMaxKbps = 800;
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exp.SetMaxBitrate(/*pixels*/ 9999, kMaxKbps);
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const uint32_t kAvailableKbps = kMaxKbps;
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EXPECT_FALSE(exp.BwHigh(NowMs(), kAvailableKbps));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(2000), kAvailableKbps));
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}
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TEST_F(QualityRampupExperimentTest, ReportsBwHighWithMaxBitrateFactor) {
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test::ScopedFieldTrials field_trials(
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"WebRTC-Video-QualityRampupSettings/"
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"min_pixels:10000,min_duration_ms:2000,max_bitrate_factor:1.5/");
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auto exp = QualityRampupExperiment::ParseSettings();
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EXPECT_EQ(10000, exp.MinPixels());
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EXPECT_EQ(2000, exp.MinDurationMs());
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EXPECT_EQ(1.5, exp.MaxBitrateFactor());
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const uint32_t kMaxKbps = 800;
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exp.SetMaxBitrate(/*pixels*/ 10000, kMaxKbps);
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const uint32_t kAvailableKbps = kMaxKbps * 1.5;
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EXPECT_FALSE(exp.BwHigh(NowMs(), kAvailableKbps - 1));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(2000), kAvailableKbps - 1));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(1), kAvailableKbps));
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EXPECT_TRUE(exp.BwHigh(AdvanceMs(2000), kAvailableKbps));
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}
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TEST_F(QualityRampupExperimentTest, ReportsBwHigh) {
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test::ScopedFieldTrials field_trials(
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"WebRTC-Video-QualityRampupSettings/"
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"min_pixels:10000,min_duration_ms:2000/");
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auto exp = QualityRampupExperiment::ParseSettings();
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const uint32_t kMaxKbps = 800;
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exp.SetMaxBitrate(/*pixels*/ 10000, kMaxKbps);
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const uint32_t kAvailableKbps = kMaxKbps;
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EXPECT_FALSE(exp.BwHigh(NowMs(), kAvailableKbps));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(2000 - 1), kAvailableKbps));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(1), kAvailableKbps - 1)); // Below, reset.
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(1), kAvailableKbps));
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EXPECT_FALSE(exp.BwHigh(AdvanceMs(2000 - 1), kAvailableKbps));
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EXPECT_TRUE(exp.BwHigh(AdvanceMs(1), kAvailableKbps));
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}
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} // namespace
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} // namespace webrtc
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