67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
// Copyright 2014 Google LLC. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "packager/mpd/base/bandwidth_estimator.h"
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#include <gtest/gtest.h>
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namespace shaka {
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namespace {
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const uint64_t kBitsInByte = 8;
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} // namespace
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TEST(BandwidthEstimatorTest, AllBlocks) {
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const double kDuration = 1.0;
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BandwidthEstimator be;
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const uint64_t kNumBlocksToAdd = 100;
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uint64_t total_bytes = 0;
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for (uint64_t i = 1; i <= kNumBlocksToAdd; ++i) {
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be.AddBlock(i, kDuration);
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total_bytes += i;
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}
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const uint64_t kExptectedEstimate =
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total_bytes * kBitsInByte / kNumBlocksToAdd;
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EXPECT_EQ(kExptectedEstimate, be.Estimate());
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const uint64_t kMax = kNumBlocksToAdd * kBitsInByte;
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EXPECT_EQ(kMax, be.Max());
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}
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TEST(BandwidthEstimatorTest, ExcludeShortBlocks) {
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const double kDuration = 1.0;
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BandwidthEstimator be;
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// Add 4 blocks with duration 0.1, 0.8, 1.8 and 0.2 respectively. The first
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// and the last blocks are excluded as they are too short.
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be.AddBlock(1, 0.1 * kDuration);
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be.AddBlock(1, 0.8 * kDuration);
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be.AddBlock(1, 1.8 * kDuration);
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be.AddBlock(1, 0.2 * kDuration);
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const uint64_t kExpectedMax = 1 / 0.8 * kBitsInByte;
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EXPECT_EQ(kExpectedMax, be.Max());
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}
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TEST(BandwidthEstimatorTest, ExcludeShortBlocksMore) {
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const double kDuration = 1.0;
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BandwidthEstimator be;
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for (int k = 0; k < 100; k++) {
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// Add 4 blocks with duration 0.1, 0.8, 1.8 and 0.2 respectively. The first
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// and the last blocks are excluded as they are too short.
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be.AddBlock(1, 0.1 * kDuration);
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be.AddBlock(1, 0.8 * kDuration);
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be.AddBlock(1, 1.8 * kDuration);
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be.AddBlock(1, 0.2 * kDuration);
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}
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const uint64_t kExpectedMax = 1 / 0.8 * kBitsInByte;
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EXPECT_EQ(kExpectedMax, be.Max());
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}
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} // namespace shaka
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