d650f3c6de
Bug: webrtc:42232595 Change-Id: I774efbe2bbe5d29e7eac500acf1fa4c99ebc74a8 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/378041 Commit-Queue: Evan Shrubsole <eshr@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43936}
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/*
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* Copyright 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/numerics/sample_counter.h"
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#include <initializer_list>
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#include <optional>
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#include "test/gmock.h"
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#include "test/gtest.h"
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using ::testing::Eq;
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namespace webrtc {
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TEST(SampleCounterTest, ProcessesNoSamples) {
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constexpr int kMinSamples = 1;
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SampleCounter counter;
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EXPECT_THAT(counter.Avg(kMinSamples), Eq(std::nullopt));
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EXPECT_THAT(counter.Max(), Eq(std::nullopt));
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EXPECT_THAT(counter.Min(), Eq(std::nullopt));
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}
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TEST(SampleCounterTest, NotEnoughSamples) {
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constexpr int kMinSamples = 6;
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SampleCounter counter;
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for (int value : {1, 2, 3, 4, 5}) {
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counter.Add(value);
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}
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EXPECT_THAT(counter.Avg(kMinSamples), Eq(std::nullopt));
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EXPECT_THAT(counter.Sum(kMinSamples), Eq(std::nullopt));
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EXPECT_THAT(counter.Max(), Eq(5));
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EXPECT_THAT(counter.Min(), Eq(1));
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}
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TEST(SampleCounterTest, EnoughSamples) {
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constexpr int kMinSamples = 5;
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SampleCounter counter;
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for (int value : {1, 2, 3, 4, 5}) {
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counter.Add(value);
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}
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EXPECT_THAT(counter.Avg(kMinSamples), Eq(3));
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EXPECT_THAT(counter.Sum(kMinSamples), Eq(15));
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EXPECT_THAT(counter.Max(), Eq(5));
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EXPECT_THAT(counter.Min(), Eq(1));
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}
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TEST(SampleCounterTest, ComputesVariance) {
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constexpr int kMinSamples = 5;
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SampleCounterWithVariance counter;
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for (int value : {1, 2, 3, 4, 5}) {
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counter.Add(value);
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}
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EXPECT_THAT(counter.Variance(kMinSamples), Eq(2));
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}
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TEST(SampleCounterTest, AggregatesTwoCounters) {
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constexpr int kMinSamples = 5;
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SampleCounterWithVariance counter1;
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for (int value : {1, 2, 3}) {
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counter1.Add(value);
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}
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SampleCounterWithVariance counter2;
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for (int value : {4, 5}) {
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counter2.Add(value);
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}
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// Before aggregation there is not enough samples.
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EXPECT_THAT(counter1.Avg(kMinSamples), Eq(std::nullopt));
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EXPECT_THAT(counter1.Variance(kMinSamples), Eq(std::nullopt));
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// Aggregate counter2 in counter1.
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counter1.Add(counter2);
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EXPECT_THAT(counter1.Avg(kMinSamples), Eq(3));
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EXPECT_THAT(counter1.Max(), Eq(5));
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EXPECT_THAT(counter1.Min(), Eq(1));
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EXPECT_THAT(counter1.Variance(kMinSamples), Eq(2));
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}
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} // namespace webrtc
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