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/*
* Copyright (c) 2016 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 "modules/video_coding/utility/moving_average.h"
#include "test/gtest.h"
TEST(MovingAverageTest, EmptyAverage) {
webrtc::MovingAverage moving_average(1);
EXPECT_EQ(0u, moving_average.size());
EXPECT_FALSE(moving_average.GetAverage(0));
}
// Test single value.
TEST(MovingAverageTest, OneElement) {
webrtc::MovingAverage moving_average(1);
moving_average.AddSample(3);
EXPECT_EQ(1u, moving_average.size());
EXPECT_EQ(3, *moving_average.GetAverage());
EXPECT_EQ(3, *moving_average.GetAverage(1));
EXPECT_FALSE(moving_average.GetAverage(2));
}
TEST(MovingAverageTest, GetAverage) {
webrtc::MovingAverage moving_average(1024);
moving_average.AddSample(1);
moving_average.AddSample(1);
moving_average.AddSample(3);
moving_average.AddSample(3);
EXPECT_EQ(*moving_average.GetAverage(4), 2);
EXPECT_EQ(*moving_average.GetAverage(2), 3);
EXPECT_FALSE(moving_average.GetAverage(0));
}
TEST(MovingAverageTest, Reset) {
webrtc::MovingAverage moving_average(5);
moving_average.AddSample(1);
EXPECT_EQ(1, *moving_average.GetAverage(1));
moving_average.Reset();
EXPECT_FALSE(moving_average.GetAverage(1));
EXPECT_FALSE(moving_average.GetAverage(6));
}
TEST(MovingAverageTest, ManySamples) {
webrtc::MovingAverage moving_average(10);
for (int i = 1; i < 11; i++) {
moving_average.AddSample(i);
}
EXPECT_EQ(*moving_average.GetAverage(), 5);
moving_average.Reset();
for (int i = 1; i < 2001; i++) {
moving_average.AddSample(i);
}
EXPECT_EQ(*moving_average.GetAverage(), 1995);
}
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