// Copyright (c) 2012 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 "base/metrics/sample_map.h" #include #include "base/test/gtest_util.h" #include "testing/gtest/include/gtest/gtest.h" namespace base { namespace { TEST(SampleMapTest, AccumulateTest) { SampleMap samples(1); samples.Accumulate(1, 100); samples.Accumulate(2, 200); samples.Accumulate(1, -200); EXPECT_EQ(-100, samples.GetCount(1)); EXPECT_EQ(200, samples.GetCount(2)); EXPECT_EQ(300, samples.sum()); EXPECT_EQ(100, samples.TotalCount()); EXPECT_EQ(samples.redundant_count(), samples.TotalCount()); } TEST(SampleMapTest, Accumulate_LargeValuesDontOverflow) { SampleMap samples(1); samples.Accumulate(250000000, 100); samples.Accumulate(500000000, 200); samples.Accumulate(250000000, -200); EXPECT_EQ(-100, samples.GetCount(250000000)); EXPECT_EQ(200, samples.GetCount(500000000)); EXPECT_EQ(75000000000LL, samples.sum()); EXPECT_EQ(100, samples.TotalCount()); EXPECT_EQ(samples.redundant_count(), samples.TotalCount()); } TEST(SampleMapTest, AddSubtractTest) { SampleMap samples1(1); SampleMap samples2(2); samples1.Accumulate(1, 100); samples1.Accumulate(2, 100); samples1.Accumulate(3, 100); samples2.Accumulate(1, 200); samples2.Accumulate(2, 200); samples2.Accumulate(4, 200); samples1.Add(samples2); EXPECT_EQ(300, samples1.GetCount(1)); EXPECT_EQ(300, samples1.GetCount(2)); EXPECT_EQ(100, samples1.GetCount(3)); EXPECT_EQ(200, samples1.GetCount(4)); EXPECT_EQ(2000, samples1.sum()); EXPECT_EQ(900, samples1.TotalCount()); EXPECT_EQ(samples1.redundant_count(), samples1.TotalCount()); samples1.Subtract(samples2); EXPECT_EQ(100, samples1.GetCount(1)); EXPECT_EQ(100, samples1.GetCount(2)); EXPECT_EQ(100, samples1.GetCount(3)); EXPECT_EQ(0, samples1.GetCount(4)); EXPECT_EQ(600, samples1.sum()); EXPECT_EQ(300, samples1.TotalCount()); EXPECT_EQ(samples1.redundant_count(), samples1.TotalCount()); } TEST(SampleMapIteratorTest, IterateTest) { SampleMap samples(1); samples.Accumulate(1, 100); samples.Accumulate(2, 200); samples.Accumulate(4, -300); samples.Accumulate(5, 0); std::unique_ptr it = samples.Iterator(); HistogramBase::Sample min; int64_t max; HistogramBase::Count count; it->Get(&min, &max, &count); EXPECT_EQ(1, min); EXPECT_EQ(2, max); EXPECT_EQ(100, count); EXPECT_FALSE(it->GetBucketIndex(nullptr)); it->Next(); it->Get(&min, &max, &count); EXPECT_EQ(2, min); EXPECT_EQ(3, max); EXPECT_EQ(200, count); it->Next(); it->Get(&min, &max, &count); EXPECT_EQ(4, min); EXPECT_EQ(5, max); EXPECT_EQ(-300, count); it->Next(); EXPECT_TRUE(it->Done()); } TEST(SampleMapIteratorTest, SkipEmptyRanges) { SampleMap samples(1); samples.Accumulate(5, 1); samples.Accumulate(10, 2); samples.Accumulate(15, 3); samples.Accumulate(20, 4); samples.Accumulate(25, 5); SampleMap samples2(2); samples2.Accumulate(5, 1); samples2.Accumulate(20, 4); samples2.Accumulate(25, 5); samples.Subtract(samples2); std::unique_ptr it = samples.Iterator(); EXPECT_FALSE(it->Done()); HistogramBase::Sample min; int64_t max; HistogramBase::Count count; it->Get(&min, &max, &count); EXPECT_EQ(10, min); EXPECT_EQ(11, max); EXPECT_EQ(2, count); it->Next(); EXPECT_FALSE(it->Done()); it->Get(&min, &max, &count); EXPECT_EQ(15, min); EXPECT_EQ(16, max); EXPECT_EQ(3, count); it->Next(); EXPECT_TRUE(it->Done()); } TEST(SampleMapIteratorDeathTest, IterateDoneTest) { SampleMap samples(1); std::unique_ptr it = samples.Iterator(); EXPECT_TRUE(it->Done()); HistogramBase::Sample min; int64_t max; HistogramBase::Count count; EXPECT_DCHECK_DEATH(it->Get(&min, &max, &count)); EXPECT_DCHECK_DEATH(it->Next()); samples.Accumulate(1, 100); it = samples.Iterator(); EXPECT_FALSE(it->Done()); } } // namespace } // namespace base