Ilya Nikolaevskiy | 2634199 | 2018-11-05 12:55:18 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2018 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 "rtc_base/numerics/moving_average.h" |
| 12 | |
| 13 | #include "test/gtest.h" |
| 14 | |
| 15 | namespace test { |
| 16 | |
| 17 | TEST(MovingAverageTest, EmptyAverage) { |
| 18 | rtc::MovingAverage moving_average(1); |
| 19 | EXPECT_EQ(0u, moving_average.Size()); |
| 20 | EXPECT_EQ(absl::nullopt, moving_average.GetAverageRoundedDown()); |
| 21 | } |
| 22 | |
| 23 | // Test single value. |
| 24 | TEST(MovingAverageTest, OneElement) { |
| 25 | rtc::MovingAverage moving_average(1); |
| 26 | moving_average.AddSample(3); |
| 27 | EXPECT_EQ(1u, moving_average.Size()); |
| 28 | EXPECT_EQ(3, *moving_average.GetAverageRoundedDown()); |
| 29 | } |
| 30 | |
| 31 | TEST(MovingAverageTest, GetAverage) { |
| 32 | rtc::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.GetAverageRoundedDown(), 2); |
| 38 | EXPECT_EQ(*moving_average.GetAverageRoundedToClosest(), 2); |
| 39 | } |
| 40 | |
| 41 | TEST(MovingAverageTest, GetAverageRoundedDownRounds) { |
| 42 | rtc::MovingAverage moving_average(1024); |
| 43 | moving_average.AddSample(1); |
| 44 | moving_average.AddSample(2); |
| 45 | moving_average.AddSample(2); |
| 46 | moving_average.AddSample(2); |
| 47 | EXPECT_EQ(*moving_average.GetAverageRoundedDown(), 1); |
| 48 | } |
| 49 | |
| 50 | TEST(MovingAverageTest, GetAverageRoundedToClosestRounds) { |
| 51 | rtc::MovingAverage moving_average(1024); |
| 52 | moving_average.AddSample(1); |
| 53 | moving_average.AddSample(2); |
| 54 | moving_average.AddSample(2); |
| 55 | moving_average.AddSample(2); |
| 56 | EXPECT_EQ(*moving_average.GetAverageRoundedToClosest(), 2); |
| 57 | } |
| 58 | |
| 59 | TEST(MovingAverageTest, Reset) { |
| 60 | rtc::MovingAverage moving_average(5); |
| 61 | moving_average.AddSample(1); |
| 62 | EXPECT_EQ(1, *moving_average.GetAverageRoundedDown()); |
| 63 | EXPECT_EQ(1, *moving_average.GetAverageRoundedToClosest()); |
| 64 | |
| 65 | moving_average.Reset(); |
| 66 | |
| 67 | EXPECT_FALSE(moving_average.GetAverageRoundedDown()); |
| 68 | moving_average.AddSample(10); |
| 69 | EXPECT_EQ(10, *moving_average.GetAverageRoundedDown()); |
| 70 | EXPECT_EQ(10, *moving_average.GetAverageRoundedToClosest()); |
| 71 | } |
| 72 | |
| 73 | TEST(MovingAverageTest, ManySamples) { |
| 74 | rtc::MovingAverage moving_average(10); |
| 75 | for (int i = 1; i < 11; i++) { |
| 76 | moving_average.AddSample(i); |
| 77 | } |
| 78 | EXPECT_EQ(*moving_average.GetAverageRoundedDown(), 5); |
| 79 | EXPECT_EQ(*moving_average.GetAverageRoundedToClosest(), 6); |
| 80 | for (int i = 1; i < 2001; i++) { |
| 81 | moving_average.AddSample(i); |
| 82 | } |
| 83 | EXPECT_EQ(*moving_average.GetAverageRoundedDown(), 1995); |
| 84 | EXPECT_EQ(*moving_average.GetAverageRoundedToClosest(), 1996); |
| 85 | } |
| 86 | |
| 87 | } // namespace test |