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| 1 // Copyright 2014 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/histogram_snapshot_manager.h" | |
| 6 | |
| 7 #include <string> | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/metrics/histogram_delta_serialization.h" | |
| 11 #include "base/metrics/histogram_macros.h" | |
| 12 #include "base/metrics/statistics_recorder.h" | |
| 13 #include "testing/gtest/include/gtest/gtest.h" | |
| 14 | |
| 15 namespace base { | |
| 16 | |
| 17 class HistogramFlattenerDeltaRecorder : public HistogramFlattener { | |
| 18 public: | |
| 19 HistogramFlattenerDeltaRecorder() {} | |
| 20 | |
| 21 void RecordDelta(const HistogramBase& histogram, | |
| 22 const HistogramSamples& snapshot) override { | |
| 23 recorded_delta_histogram_names_.push_back(histogram.histogram_name()); | |
| 24 } | |
| 25 | |
| 26 void InconsistencyDetected(HistogramBase::Inconsistency problem) override { | |
| 27 ASSERT_TRUE(false); | |
| 28 } | |
| 29 | |
| 30 void UniqueInconsistencyDetected( | |
| 31 HistogramBase::Inconsistency problem) override { | |
| 32 ASSERT_TRUE(false); | |
| 33 } | |
| 34 | |
| 35 void InconsistencyDetectedInLoggedCount(int amount) override { | |
| 36 ASSERT_TRUE(false); | |
| 37 } | |
| 38 | |
| 39 std::vector<std::string> GetRecordedDeltaHistogramNames() { | |
| 40 return recorded_delta_histogram_names_; | |
| 41 } | |
| 42 | |
| 43 private: | |
| 44 std::vector<std::string> recorded_delta_histogram_names_; | |
| 45 | |
| 46 DISALLOW_COPY_AND_ASSIGN(HistogramFlattenerDeltaRecorder); | |
| 47 }; | |
| 48 | |
| 49 class HistogramSnapshotManagerTest : public testing::Test { | |
| 50 protected: | |
| 51 HistogramSnapshotManagerTest() | |
| 52 : histogram_snapshot_manager_(&histogram_flattener_delta_recorder_) {} | |
| 53 | |
| 54 ~HistogramSnapshotManagerTest() override {} | |
| 55 | |
| 56 StatisticsRecorder statistics_recorder_; | |
| 57 HistogramFlattenerDeltaRecorder histogram_flattener_delta_recorder_; | |
| 58 HistogramSnapshotManager histogram_snapshot_manager_; | |
| 59 }; | |
| 60 | |
| 61 TEST_F(HistogramSnapshotManagerTest, PrepareDeltasNoFlagsFilter) { | |
| 62 // kNoFlags filter should record all histograms. | |
| 63 UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 2); | |
| 64 UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2); | |
| 65 | |
| 66 histogram_snapshot_manager_.PrepareDeltas(HistogramBase::kNoFlags, | |
| 67 HistogramBase::kNoFlags); | |
| 68 | |
| 69 const std::vector<std::string>& histograms = | |
| 70 histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames(); | |
| 71 EXPECT_EQ(2U, histograms.size()); | |
| 72 EXPECT_EQ("UmaHistogram", histograms[0]); | |
| 73 EXPECT_EQ("UmaStabilityHistogram", histograms[1]); | |
| 74 } | |
| 75 | |
| 76 TEST_F(HistogramSnapshotManagerTest, PrepareDeltasUmaHistogramFlagFilter) { | |
| 77 // Note that kUmaStabilityHistogramFlag includes kUmaTargetedHistogramFlag. | |
| 78 UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 2); | |
| 79 UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2); | |
| 80 | |
| 81 histogram_snapshot_manager_.PrepareDeltas( | |
| 82 HistogramBase::kNoFlags, HistogramBase::kUmaTargetedHistogramFlag); | |
| 83 | |
| 84 const std::vector<std::string>& histograms = | |
| 85 histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames(); | |
| 86 EXPECT_EQ(2U, histograms.size()); | |
| 87 EXPECT_EQ("UmaHistogram", histograms[0]); | |
| 88 EXPECT_EQ("UmaStabilityHistogram", histograms[1]); | |
| 89 } | |
| 90 | |
| 91 TEST_F(HistogramSnapshotManagerTest, | |
| 92 PrepareDeltasUmaStabilityHistogramFlagFilter) { | |
| 93 UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 2); | |
| 94 UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2); | |
| 95 | |
| 96 histogram_snapshot_manager_.PrepareDeltas( | |
| 97 HistogramBase::kNoFlags, HistogramBase::kUmaStabilityHistogramFlag); | |
| 98 | |
| 99 const std::vector<std::string>& histograms = | |
| 100 histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames(); | |
| 101 EXPECT_EQ(1U, histograms.size()); | |
| 102 EXPECT_EQ("UmaStabilityHistogram", histograms[0]); | |
| 103 } | |
| 104 | |
| 105 } // namespace base | |
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