OLD | NEW |
(Empty) | |
| 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 <string> |
| 6 |
| 7 #include "base/memory/scoped_ptr.h" |
| 8 #include "base/metrics/sparse_histogram.h" |
| 9 #include "testing/gtest/include/gtest/gtest.h" |
| 10 |
| 11 namespace base { |
| 12 |
| 13 class SparseHistogramTest : public testing::Test { |
| 14 protected: |
| 15 scoped_ptr<SparseHistogram> NewSparseHistogram(const std::string& name) { |
| 16 return scoped_ptr<SparseHistogram>(new SparseHistogram(name)); |
| 17 } |
| 18 }; |
| 19 |
| 20 TEST_F(SparseHistogramTest, BasicTest) { |
| 21 scoped_ptr<SparseHistogram> histogram(NewSparseHistogram("Sparse1")); |
| 22 std::map<HistogramBase::Sample, HistogramBase::Count> sample; |
| 23 histogram->SnapshotSample(&sample); |
| 24 |
| 25 ASSERT_EQ(0u, sample.size()); |
| 26 |
| 27 histogram->Add(100); |
| 28 histogram->SnapshotSample(&sample); |
| 29 ASSERT_EQ(1u, sample.size()); |
| 30 EXPECT_EQ(1, sample[100]); |
| 31 |
| 32 histogram->Add(100); |
| 33 histogram->Add(101); |
| 34 histogram->SnapshotSample(&sample); |
| 35 ASSERT_EQ(2u, sample.size()); |
| 36 EXPECT_EQ(2, sample[100]); |
| 37 EXPECT_EQ(1, sample[101]); |
| 38 } |
| 39 |
| 40 } // namespace base |
OLD | NEW |