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Diffstat (limited to 'chromium/third_party/webrtc/base/bandwidthsmoother_unittest.cc')
-rw-r--r-- | chromium/third_party/webrtc/base/bandwidthsmoother_unittest.cc | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/chromium/third_party/webrtc/base/bandwidthsmoother_unittest.cc b/chromium/third_party/webrtc/base/bandwidthsmoother_unittest.cc new file mode 100644 index 00000000000..132c0b13a79 --- /dev/null +++ b/chromium/third_party/webrtc/base/bandwidthsmoother_unittest.cc @@ -0,0 +1,116 @@ +/* + * Copyright 2011 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 <limits.h> + +#include "webrtc/base/bandwidthsmoother.h" +#include "webrtc/base/gunit.h" + +namespace rtc { + +static const int kTimeBetweenIncrease = 10; +static const double kPercentIncrease = 1.1; +static const size_t kSamplesCountToAverage = 2; +static const double kMinSampleCountPercent = 1.0; + +TEST(BandwidthSmootherTest, TestSampleIncrease) { + BandwidthSmoother mon(1000, // initial_bandwidth_guess + kTimeBetweenIncrease, + kPercentIncrease, + kSamplesCountToAverage, + kMinSampleCountPercent); + + int bandwidth_sample = 1000; + EXPECT_EQ(bandwidth_sample, mon.get_bandwidth_estimation()); + bandwidth_sample = + static_cast<int>(bandwidth_sample * kPercentIncrease); + EXPECT_FALSE(mon.Sample(9, bandwidth_sample)); + EXPECT_TRUE(mon.Sample(10, bandwidth_sample)); + EXPECT_EQ(bandwidth_sample, mon.get_bandwidth_estimation()); + int next_expected_est = + static_cast<int>(bandwidth_sample * kPercentIncrease); + bandwidth_sample *= 2; + EXPECT_TRUE(mon.Sample(20, bandwidth_sample)); + EXPECT_EQ(next_expected_est, mon.get_bandwidth_estimation()); +} + +TEST(BandwidthSmootherTest, TestSampleIncreaseFromZero) { + BandwidthSmoother mon(0, // initial_bandwidth_guess + kTimeBetweenIncrease, + kPercentIncrease, + kSamplesCountToAverage, + kMinSampleCountPercent); + + const int kBandwidthSample = 1000; + EXPECT_EQ(0, mon.get_bandwidth_estimation()); + EXPECT_FALSE(mon.Sample(9, kBandwidthSample)); + EXPECT_TRUE(mon.Sample(10, kBandwidthSample)); + EXPECT_EQ(kBandwidthSample, mon.get_bandwidth_estimation()); +} + +TEST(BandwidthSmootherTest, TestSampleDecrease) { + BandwidthSmoother mon(1000, // initial_bandwidth_guess + kTimeBetweenIncrease, + kPercentIncrease, + kSamplesCountToAverage, + kMinSampleCountPercent); + + const int kBandwidthSample = 999; + EXPECT_EQ(1000, mon.get_bandwidth_estimation()); + EXPECT_FALSE(mon.Sample(1, kBandwidthSample)); + EXPECT_EQ(1000, mon.get_bandwidth_estimation()); + EXPECT_TRUE(mon.Sample(2, kBandwidthSample)); + EXPECT_EQ(kBandwidthSample, mon.get_bandwidth_estimation()); +} + +TEST(BandwidthSmootherTest, TestSampleTooFewSamples) { + BandwidthSmoother mon(1000, // initial_bandwidth_guess + kTimeBetweenIncrease, + kPercentIncrease, + 10, // 10 samples. + 0.5); // 5 min samples. + + const int kBandwidthSample = 500; + EXPECT_EQ(1000, mon.get_bandwidth_estimation()); + EXPECT_FALSE(mon.Sample(1, kBandwidthSample)); + EXPECT_FALSE(mon.Sample(2, kBandwidthSample)); + EXPECT_FALSE(mon.Sample(3, kBandwidthSample)); + EXPECT_FALSE(mon.Sample(4, kBandwidthSample)); + EXPECT_EQ(1000, mon.get_bandwidth_estimation()); + EXPECT_TRUE(mon.Sample(5, kBandwidthSample)); + EXPECT_EQ(kBandwidthSample, mon.get_bandwidth_estimation()); +} + +TEST(BandwidthSmootherTest, TestSampleRollover) { + const int kHugeBandwidth = 2000000000; // > INT_MAX/1.1 + BandwidthSmoother mon(kHugeBandwidth, + kTimeBetweenIncrease, + kPercentIncrease, + kSamplesCountToAverage, + kMinSampleCountPercent); + + EXPECT_FALSE(mon.Sample(10, INT_MAX)); + EXPECT_FALSE(mon.Sample(11, INT_MAX)); + EXPECT_EQ(kHugeBandwidth, mon.get_bandwidth_estimation()); +} + +TEST(BandwidthSmootherTest, TestSampleNegative) { + BandwidthSmoother mon(1000, // initial_bandwidth_guess + kTimeBetweenIncrease, + kPercentIncrease, + kSamplesCountToAverage, + kMinSampleCountPercent); + + EXPECT_FALSE(mon.Sample(10, -1)); + EXPECT_FALSE(mon.Sample(11, -1)); + EXPECT_EQ(1000, mon.get_bandwidth_estimation()); +} + +} // namespace rtc |