1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/metrics/sample_map.h" 6 7 #include "base/memory/scoped_ptr.h" 8 #include "testing/gtest/include/gtest/gtest.h" 9 10 namespace base { 11 namespace { 12 13 TEST(SampleMapTest, AccumulateTest) { 14 SampleMap samples(1); 15 16 samples.Accumulate(1, 100); 17 samples.Accumulate(2, 200); 18 samples.Accumulate(1, -200); 19 EXPECT_EQ(-100, samples.GetCount(1)); 20 EXPECT_EQ(200, samples.GetCount(2)); 21 22 EXPECT_EQ(300, samples.sum()); 23 EXPECT_EQ(100, samples.TotalCount()); 24 EXPECT_EQ(samples.redundant_count(), samples.TotalCount()); 25 } 26 27 TEST(SampleMapTest, AddSubtractTest) { 28 SampleMap samples1(1); 29 SampleMap samples2(2); 30 31 samples1.Accumulate(1, 100); 32 samples1.Accumulate(2, 100); 33 samples1.Accumulate(3, 100); 34 35 samples2.Accumulate(1, 200); 36 samples2.Accumulate(2, 200); 37 samples2.Accumulate(4, 200); 38 39 samples1.Add(samples2); 40 EXPECT_EQ(300, samples1.GetCount(1)); 41 EXPECT_EQ(300, samples1.GetCount(2)); 42 EXPECT_EQ(100, samples1.GetCount(3)); 43 EXPECT_EQ(200, samples1.GetCount(4)); 44 EXPECT_EQ(2000, samples1.sum()); 45 EXPECT_EQ(900, samples1.TotalCount()); 46 EXPECT_EQ(samples1.redundant_count(), samples1.TotalCount()); 47 48 samples1.Subtract(samples2); 49 EXPECT_EQ(100, samples1.GetCount(1)); 50 EXPECT_EQ(100, samples1.GetCount(2)); 51 EXPECT_EQ(100, samples1.GetCount(3)); 52 EXPECT_EQ(0, samples1.GetCount(4)); 53 EXPECT_EQ(600, samples1.sum()); 54 EXPECT_EQ(300, samples1.TotalCount()); 55 EXPECT_EQ(samples1.redundant_count(), samples1.TotalCount()); 56 } 57 58 TEST(SampleMapIteratorTest, IterateTest) { 59 SampleMap samples(1); 60 samples.Accumulate(1, 100); 61 samples.Accumulate(2, 200); 62 samples.Accumulate(4, -300); 63 samples.Accumulate(5, 0); 64 65 scoped_ptr<SampleCountIterator> it = samples.Iterator(); 66 67 HistogramBase::Sample min; 68 HistogramBase::Sample max; 69 HistogramBase::Count count; 70 71 it->Get(&min, &max, &count); 72 EXPECT_EQ(1, min); 73 EXPECT_EQ(2, max); 74 EXPECT_EQ(100, count); 75 EXPECT_FALSE(it->GetBucketIndex(NULL)); 76 77 it->Next(); 78 it->Get(&min, &max, &count); 79 EXPECT_EQ(2, min); 80 EXPECT_EQ(3, max); 81 EXPECT_EQ(200, count); 82 83 it->Next(); 84 it->Get(&min, &max, &count); 85 EXPECT_EQ(4, min); 86 EXPECT_EQ(5, max); 87 EXPECT_EQ(-300, count); 88 89 it->Next(); 90 EXPECT_TRUE(it->Done()); 91 } 92 93 TEST(SampleMapIteratorTest, SkipEmptyRanges) { 94 SampleMap samples(1); 95 samples.Accumulate(5, 1); 96 samples.Accumulate(10, 2); 97 samples.Accumulate(15, 3); 98 samples.Accumulate(20, 4); 99 samples.Accumulate(25, 5); 100 101 SampleMap samples2(2); 102 samples2.Accumulate(5, 1); 103 samples2.Accumulate(20, 4); 104 samples2.Accumulate(25, 5); 105 106 samples.Subtract(samples2); 107 108 scoped_ptr<SampleCountIterator> it = samples.Iterator(); 109 EXPECT_FALSE(it->Done()); 110 111 HistogramBase::Sample min; 112 HistogramBase::Sample max; 113 HistogramBase::Count count; 114 115 it->Get(&min, &max, &count); 116 EXPECT_EQ(10, min); 117 EXPECT_EQ(11, max); 118 EXPECT_EQ(2, count); 119 120 it->Next(); 121 EXPECT_FALSE(it->Done()); 122 123 it->Get(&min, &max, &count); 124 EXPECT_EQ(15, min); 125 EXPECT_EQ(16, max); 126 EXPECT_EQ(3, count); 127 128 it->Next(); 129 EXPECT_TRUE(it->Done()); 130 } 131 132 #if (!defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)) && GTEST_HAS_DEATH_TEST 133 134 TEST(SampleMapIteratorDeathTest, IterateDoneTest) { 135 SampleMap samples(1); 136 137 scoped_ptr<SampleCountIterator> it = samples.Iterator(); 138 139 EXPECT_TRUE(it->Done()); 140 141 HistogramBase::Sample min; 142 HistogramBase::Sample max; 143 HistogramBase::Count count; 144 EXPECT_DEATH(it->Get(&min, &max, &count), ""); 145 146 EXPECT_DEATH(it->Next(), ""); 147 148 samples.Accumulate(1, 100); 149 it = samples.Iterator(); 150 EXPECT_FALSE(it->Done()); 151 } 152 153 #endif 154 // (!defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)) && GTEST_HAS_DEATH_TEST 155 156 } // namespace 157 } // namespace base 158
