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      1 /*
      2  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #include "testing/gtest/include/gtest/gtest.h"
     12 
     13 #include "webrtc/base/constructormagic.h"
     14 #include "webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_unittest_helper.h"
     15 
     16 namespace webrtc {
     17 
     18 class RemoteBitrateEstimatorSingleTest : public RemoteBitrateEstimatorTest {
     19  public:
     20   static const uint32_t kRemoteBitrateEstimatorMinBitrateBps = 30000;
     21 
     22   RemoteBitrateEstimatorSingleTest() {}
     23   virtual void SetUp() {
     24     bitrate_estimator_.reset(RemoteBitrateEstimatorFactory().Create(
     25         bitrate_observer_.get(),
     26         &clock_,
     27         kMimdControl,
     28         kRemoteBitrateEstimatorMinBitrateBps));
     29   }
     30  protected:
     31   DISALLOW_COPY_AND_ASSIGN(RemoteBitrateEstimatorSingleTest);
     32 };
     33 
     34 TEST_F(RemoteBitrateEstimatorSingleTest, InitialBehavior) {
     35   InitialBehaviorTestHelper(498075);
     36 }
     37 
     38 TEST_F(RemoteBitrateEstimatorSingleTest, RateIncreaseReordering) {
     39   RateIncreaseReorderingTestHelper(498136);
     40 }
     41 
     42 TEST_F(RemoteBitrateEstimatorSingleTest, RateIncreaseRtpTimestamps) {
     43   RateIncreaseRtpTimestampsTestHelper();
     44 }
     45 
     46 // Verify that the time it takes for the estimator to reduce the bitrate when
     47 // the capacity is tightened stays the same.
     48 TEST_F(RemoteBitrateEstimatorSingleTest, CapacityDropOneStream) {
     49   CapacityDropTestHelper(1, false, 956214, 367);
     50 }
     51 
     52 // Verify that the time it takes for the estimator to reduce the bitrate when
     53 // the capacity is tightened stays the same. This test also verifies that we
     54 // handle wrap-arounds in this scenario.
     55 TEST_F(RemoteBitrateEstimatorSingleTest, CapacityDropOneStreamWrap) {
     56   CapacityDropTestHelper(1, true, 956214, 367);
     57 }
     58 
     59 // Verify that the time it takes for the estimator to reduce the bitrate when
     60 // the capacity is tightened stays the same. This test also verifies that we
     61 // handle wrap-arounds in this scenario. This is a multi-stream test.
     62 TEST_F(RemoteBitrateEstimatorSingleTest, CapacityDropTwoStreamsWrap) {
     63   CapacityDropTestHelper(2, true, 927088, 267);
     64 }
     65 
     66 // Verify that the time it takes for the estimator to reduce the bitrate when
     67 // the capacity is tightened stays the same. This test also verifies that we
     68 // handle wrap-arounds in this scenario. This is a multi-stream test.
     69 TEST_F(RemoteBitrateEstimatorSingleTest, CapacityDropThreeStreamsWrap) {
     70   CapacityDropTestHelper(3, true, 920944, 333);
     71 }
     72 
     73 TEST_F(RemoteBitrateEstimatorSingleTest, CapacityDropThirteenStreamsWrap) {
     74   CapacityDropTestHelper(13, true, 938944, 300);
     75 }
     76 
     77 TEST_F(RemoteBitrateEstimatorSingleTest, CapacityDropNineteenStreamsWrap) {
     78   CapacityDropTestHelper(19, true, 926718, 300);
     79 }
     80 
     81 TEST_F(RemoteBitrateEstimatorSingleTest, CapacityDropThirtyStreamsWrap) {
     82   CapacityDropTestHelper(30, true, 927016, 300);
     83 }
     84 }  // namespace webrtc
     85