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| 1 /* |
| 2 * Copyright (c) 2016 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 "webrtc/modules/video_coding/utility/moving_average.h" |
| 12 |
| 13 #include "testing/gtest/include/gtest/gtest.h" |
| 14 |
| 15 TEST(MovingAverageTest, EmptyAverage) { |
| 16 webrtc::MovingAverage moving_average(1); |
| 17 EXPECT_EQ(0u, moving_average.size()); |
| 18 EXPECT_FALSE(moving_average.GetAverage(0)); |
| 19 } |
| 20 |
| 21 // Test single value. |
| 22 TEST(MovingAverageTest, OneElement) { |
| 23 webrtc::MovingAverage moving_average(1); |
| 24 moving_average.AddSample(3); |
| 25 EXPECT_EQ(1u, moving_average.size()); |
| 26 EXPECT_EQ(3, *moving_average.GetAverage()); |
| 27 EXPECT_EQ(3, *moving_average.GetAverage(1)); |
| 28 EXPECT_FALSE(moving_average.GetAverage(2)); |
| 29 } |
| 30 |
| 31 TEST(MovingAverageTest, GetAverage) { |
| 32 webrtc::MovingAverage moving_average(1024); |
| 33 moving_average.AddSample(1); |
| 34 moving_average.AddSample(1); |
| 35 moving_average.AddSample(3); |
| 36 moving_average.AddSample(3); |
| 37 EXPECT_EQ(*moving_average.GetAverage(4), 2); |
| 38 EXPECT_EQ(*moving_average.GetAverage(2), 3); |
| 39 EXPECT_FALSE(moving_average.GetAverage(0)); |
| 40 } |
| 41 |
| 42 TEST(MovingAverageTest, Reset) { |
| 43 webrtc::MovingAverage moving_average(5); |
| 44 moving_average.AddSample(1); |
| 45 EXPECT_EQ(1, *moving_average.GetAverage(1)); |
| 46 moving_average.Reset(); |
| 47 EXPECT_FALSE(moving_average.GetAverage(1)); |
| 48 EXPECT_FALSE(moving_average.GetAverage(6)); |
| 49 } |
| 50 |
| 51 TEST(MovingAverageTest, ManySamples) { |
| 52 webrtc::MovingAverage moving_average(10); |
| 53 for (int i = 1; i < 11; i++) { |
| 54 moving_average.AddSample(i); |
| 55 } |
| 56 EXPECT_EQ(*moving_average.GetAverage(), 5); |
| 57 moving_average.Reset(); |
| 58 for (int i = 1; i < 2001; i++) { |
| 59 moving_average.AddSample(i); |
| 60 } |
| 61 EXPECT_EQ(*moving_average.GetAverage(), 1995); |
| 62 } |
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