f75d008235
Also fixes a crash on encoder Release. BUG=webrtc:4081 Review URL: https://codereview.webrtc.org/1660963002 Cr-Commit-Position: refs/heads/master@{#11729}
98 lines
3.0 KiB
C++
98 lines
3.0 KiB
C++
/*
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* Copyright (c) 2012 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 "testing/gtest/include/gtest/gtest.h"
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#include "webrtc/base/rate_statistics.h"
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namespace {
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using webrtc::RateStatistics;
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class RateStatisticsTest : public ::testing::Test {
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protected:
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RateStatisticsTest() : stats_(500, 8000) {}
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RateStatistics stats_;
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};
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TEST_F(RateStatisticsTest, TestStrictMode) {
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int64_t now_ms = 0;
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// Should be initialized to 0.
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EXPECT_EQ(0u, stats_.Rate(now_ms));
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stats_.Update(1500, now_ms);
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// Expecting 24 kbps given a 500 ms window with one 1500 bytes packet.
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EXPECT_EQ(24000u, stats_.Rate(now_ms));
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stats_.Reset();
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// Expecting 0 after init.
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EXPECT_EQ(0u, stats_.Rate(now_ms));
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for (int i = 0; i < 100000; ++i) {
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if (now_ms % 10 == 0) {
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stats_.Update(1500, now_ms);
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}
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// Approximately 1200 kbps expected. Not exact since when packets
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// are removed we will jump 10 ms to the next packet.
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if (now_ms > 0 && now_ms % 500 == 0) {
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EXPECT_NEAR(1200000u, stats_.Rate(now_ms), 24000u);
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}
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now_ms += 1;
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}
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now_ms += 500;
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// The window is 2 seconds. If nothing has been received for that time
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// the estimate should be 0.
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EXPECT_EQ(0u, stats_.Rate(now_ms));
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}
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TEST_F(RateStatisticsTest, IncreasingThenDecreasingBitrate) {
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int64_t now_ms = 0;
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stats_.Reset();
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// Expecting 0 after init.
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uint32_t bitrate = stats_.Rate(now_ms);
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EXPECT_EQ(0u, bitrate);
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// 1000 bytes per millisecond until plateau is reached.
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while (++now_ms < 10000) {
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stats_.Update(1000, now_ms);
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uint32_t new_bitrate = stats_.Rate(now_ms);
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if (new_bitrate != bitrate) {
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// New bitrate must be higher than previous one.
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EXPECT_GT(new_bitrate, bitrate);
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} else {
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// Plateau reached, 8000 kbps expected.
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EXPECT_NEAR(8000000u, bitrate, 80000u);
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break;
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}
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bitrate = new_bitrate;
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}
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// 1000 bytes per millisecond until 10-second mark, 8000 kbps expected.
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while (++now_ms < 10000) {
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stats_.Update(1000, now_ms);
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bitrate = stats_.Rate(now_ms);
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EXPECT_NEAR(8000000u, bitrate, 80000u);
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}
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// Zero bytes per millisecond until 0 is reached.
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while (++now_ms < 20000) {
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stats_.Update(0, now_ms);
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uint32_t new_bitrate = stats_.Rate(now_ms);
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if (new_bitrate != bitrate) {
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// New bitrate must be lower than previous one.
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EXPECT_LT(new_bitrate, bitrate);
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} else {
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// 0 kbps expected.
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EXPECT_EQ(0u, bitrate);
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break;
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}
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bitrate = new_bitrate;
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}
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// Zero bytes per millisecond until 20-second mark, 0 kbps expected.
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while (++now_ms < 20000) {
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stats_.Update(0, now_ms);
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EXPECT_EQ(0u, stats_.Rate(now_ms));
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}
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}
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} // namespace
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