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96e3b991da
Bug: webrtc:12338 Change-Id: I72fcb505a92f03b2ace7160ee33d555a977eddfd Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/226955 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34587}
44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
/*
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* Copyright 2017 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/histogram_percentile_counter.h"
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#include <cstdint>
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#include <utility>
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#include <vector>
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#include "test/gtest.h"
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TEST(HistogramPercentileCounterTest, ReturnsCorrectPercentiles) {
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rtc::HistogramPercentileCounter counter(10);
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const std::vector<int> kTestValues = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
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11, 12, 13, 14, 15, 16, 17, 18, 19, 20};
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EXPECT_FALSE(counter.GetPercentile(0.5f));
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// Pairs of {fraction, percentile value} computed by hand
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// for `kTestValues`.
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const std::vector<std::pair<float, uint32_t>> kTestPercentiles = {
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{0.0f, 1}, {0.01f, 1}, {0.5f, 10}, {0.9f, 18},
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{0.95f, 19}, {0.99f, 20}, {1.0f, 20}};
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for (int value : kTestValues) {
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counter.Add(value);
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}
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for (const auto& test_percentile : kTestPercentiles) {
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EXPECT_EQ(test_percentile.second,
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counter.GetPercentile(test_percentile.first).value_or(0));
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}
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}
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TEST(HistogramPercentileCounterTest, HandlesEmptySequence) {
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rtc::HistogramPercentileCounter counter(10);
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EXPECT_FALSE(counter.GetPercentile(0.5f));
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counter.Add(1u);
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EXPECT_TRUE(counter.GetPercentile(0.5f));
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}
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