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128 lines
4.8 KiB
128 lines
4.8 KiB
4 months ago
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// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/metrics/histogram_functions.h"
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#include "base/metrics/histogram_macros.h"
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#include "base/test/metrics/histogram_tester.h"
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#include "base/time/time.h"
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#include "testing/gmock/include/gmock/gmock.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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enum UmaHistogramTestingEnum {
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UMA_HISTOGRAM_TESTING_ENUM_FIRST,
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UMA_HISTOGRAM_TESTING_ENUM_SECOND,
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UMA_HISTOGRAM_TESTING_ENUM_THIRD
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};
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TEST(HistogramFunctionsTest, ExactLinear) {
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std::string histogram("Testing.UMA.HistogramExactLinear");
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HistogramTester tester;
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UmaHistogramExactLinear(histogram, 10, 100);
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tester.ExpectUniqueSample(histogram, 10, 1);
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UmaHistogramExactLinear(histogram, 20, 100);
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UmaHistogramExactLinear(histogram, 10, 100);
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tester.ExpectBucketCount(histogram, 10, 2);
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tester.ExpectBucketCount(histogram, 20, 1);
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tester.ExpectTotalCount(histogram, 3);
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// Test linear buckets overflow.
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UmaHistogramExactLinear(histogram, 200, 100);
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tester.ExpectBucketCount(histogram, 101, 1);
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tester.ExpectTotalCount(histogram, 4);
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// Test linear buckets underflow.
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UmaHistogramExactLinear(histogram, 0, 100);
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tester.ExpectBucketCount(histogram, 0, 1);
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tester.ExpectTotalCount(histogram, 5);
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}
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TEST(HistogramFunctionsTest, Enumeration) {
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std::string histogram("Testing.UMA.HistogramEnumeration");
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HistogramTester tester;
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UmaHistogramEnumeration(histogram, UMA_HISTOGRAM_TESTING_ENUM_FIRST,
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UMA_HISTOGRAM_TESTING_ENUM_THIRD);
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tester.ExpectUniqueSample(histogram, UMA_HISTOGRAM_TESTING_ENUM_FIRST, 1);
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// Verify the overflow & underflow bucket exists.
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UMA_HISTOGRAM_ENUMERATION(
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histogram, static_cast<int>(UMA_HISTOGRAM_TESTING_ENUM_THIRD) + 10,
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static_cast<int>(UMA_HISTOGRAM_TESTING_ENUM_THIRD));
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tester.ExpectBucketCount(
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histogram, static_cast<int>(UMA_HISTOGRAM_TESTING_ENUM_THIRD) + 1, 1);
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tester.ExpectTotalCount(histogram, 2);
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}
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TEST(HistogramFunctionsTest, Boolean) {
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std::string histogram("Testing.UMA.HistogramBoolean");
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HistogramTester tester;
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UmaHistogramBoolean(histogram, true);
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tester.ExpectUniqueSample(histogram, 1, 1);
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UmaHistogramBoolean(histogram, false);
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tester.ExpectBucketCount(histogram, 0, 1);
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tester.ExpectTotalCount(histogram, 2);
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}
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TEST(HistogramFunctionsTest, Percentage) {
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std::string histogram("Testing.UMA.HistogramPercentage");
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HistogramTester tester;
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UmaHistogramPercentage(histogram, 50);
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tester.ExpectUniqueSample(histogram, 50, 1);
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// Test overflows.
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UmaHistogramPercentage(histogram, 110);
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tester.ExpectBucketCount(histogram, 101, 1);
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tester.ExpectTotalCount(histogram, 2);
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}
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TEST(HistogramFunctionsTest, Counts) {
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std::string histogram("Testing.UMA.HistogramCount.Custom");
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HistogramTester tester;
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UmaHistogramCustomCounts(histogram, 10, 1, 100, 10);
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tester.ExpectUniqueSample(histogram, 10, 1);
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UmaHistogramCustomCounts(histogram, 20, 1, 100, 10);
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UmaHistogramCustomCounts(histogram, 20, 1, 100, 10);
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UmaHistogramCustomCounts(histogram, 20, 1, 100, 10);
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tester.ExpectBucketCount(histogram, 20, 3);
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tester.ExpectTotalCount(histogram, 4);
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UmaHistogramCustomCounts(histogram, 110, 1, 100, 10);
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tester.ExpectBucketCount(histogram, 101, 1);
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tester.ExpectTotalCount(histogram, 5);
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}
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TEST(HistogramFunctionsTest, Times) {
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std::string histogram("Testing.UMA.HistogramTimes");
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HistogramTester tester;
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UmaHistogramTimes(histogram, TimeDelta::FromSeconds(1));
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tester.ExpectTimeBucketCount(histogram, TimeDelta::FromSeconds(1), 1);
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tester.ExpectTotalCount(histogram, 1);
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UmaHistogramTimes(histogram, TimeDelta::FromSeconds(9));
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tester.ExpectTimeBucketCount(histogram, TimeDelta::FromSeconds(9), 1);
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tester.ExpectTotalCount(histogram, 2);
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UmaHistogramTimes(histogram, TimeDelta::FromSeconds(10)); // Overflows
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tester.ExpectTimeBucketCount(histogram, TimeDelta::FromSeconds(10), 1);
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UmaHistogramTimes(histogram, TimeDelta::FromSeconds(20)); // Overflows.
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// Check the value by picking any overflow time.
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tester.ExpectTimeBucketCount(histogram, TimeDelta::FromSeconds(11), 2);
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tester.ExpectTotalCount(histogram, 4);
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}
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TEST(HistogramFunctionsTest, Sparse_SupportsLargeRange) {
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std::string histogram("Testing.UMA.HistogramSparse");
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HistogramTester tester;
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UmaHistogramSparse(histogram, 0);
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UmaHistogramSparse(histogram, 123456789);
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UmaHistogramSparse(histogram, 123456789);
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EXPECT_THAT(tester.GetAllSamples(histogram),
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testing::ElementsAre(Bucket(0, 1), Bucket(123456789, 2)));
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}
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TEST(HistogramFunctionsTest, Sparse_SupportsNegativeValues) {
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std::string histogram("Testing.UMA.HistogramSparse");
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HistogramTester tester;
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UmaHistogramSparse(histogram, -1);
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tester.ExpectUniqueSample(histogram, -1, 1);
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}
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} // namespace base.
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