blob: 9d4cd7080658135a63fbcb534bc9abc4f8589429 [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/base/weighted_samples.h"
#include "base/stl_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting {
TEST(WeightedSamplesTest, CalculateWeightedAverage) {
static constexpr double kWeightFactor = 0.9;
static constexpr double kExpected[] = {
1,
1.5263157894736843,
2.0701107011070110,
2.6312881651642916,
};
WeightedSamples samples(kWeightFactor);
for (size_t i = 0; i < base::size(kExpected); i++) {
samples.Record(i + 1);
EXPECT_DOUBLE_EQ(kExpected[i], samples.WeightedAverage());
}
}
TEST(WeightedSamplesTest, CalculateWeightedAverage_SameValues) {
WeightedSamples samples(0.9);
for (int i = 0; i < 100; i++) {
samples.Record(100);
}
EXPECT_EQ(samples.WeightedAverage(), 100);
}
TEST(WeightedSamplesTest, ReturnZeroIfNoRecords) {
WeightedSamples samples(0.9);
EXPECT_EQ(samples.WeightedAverage(), 0);
}
} // namespace remoting