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// 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 <vector>
#include "base/metrics/histogram.h"
#include "base/metrics/histogram_base.h"
#include "base/metrics/sparse_histogram.h"
#include "base/metrics/statistics_recorder.h"
#include "base/pickle.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
class HistogramBaseTest : public testing::Test {
protected:
HistogramBaseTest() {
// Each test will have a clean state (no Histogram / BucketRanges
// registered).
statistics_recorder_ = NULL;
ResetStatisticsRecorder();
}
~HistogramBaseTest() override { delete statistics_recorder_; }
void ResetStatisticsRecorder() {
delete statistics_recorder_;
statistics_recorder_ = new StatisticsRecorder();
}
private:
StatisticsRecorder* statistics_recorder_;
};
TEST_F(HistogramBaseTest, DeserializeHistogram) {
HistogramBase* histogram = Histogram::FactoryGet(
"TestHistogram", 1, 1000, 10,
(HistogramBase::kUmaTargetedHistogramFlag |
HistogramBase::kIPCSerializationSourceFlag));
Pickle pickle;
ASSERT_TRUE(histogram->SerializeInfo(&pickle));
PickleIterator iter(pickle);
HistogramBase* deserialized = DeserializeHistogramInfo(&iter);
EXPECT_EQ(histogram, deserialized);
ResetStatisticsRecorder();
PickleIterator iter2(pickle);
deserialized = DeserializeHistogramInfo(&iter2);
EXPECT_TRUE(deserialized);
EXPECT_NE(histogram, deserialized);
EXPECT_EQ("TestHistogram", deserialized->histogram_name());
EXPECT_TRUE(deserialized->HasConstructionArguments(1, 1000, 10));
// kIPCSerializationSourceFlag will be cleared.
EXPECT_EQ(HistogramBase::kUmaTargetedHistogramFlag, deserialized->flags());
}
TEST_F(HistogramBaseTest, DeserializeLinearHistogram) {
HistogramBase* histogram = LinearHistogram::FactoryGet(
"TestHistogram", 1, 1000, 10,
HistogramBase::kIPCSerializationSourceFlag);
Pickle pickle;
ASSERT_TRUE(histogram->SerializeInfo(&pickle));
PickleIterator iter(pickle);
HistogramBase* deserialized = DeserializeHistogramInfo(&iter);
EXPECT_EQ(histogram, deserialized);
ResetStatisticsRecorder();
PickleIterator iter2(pickle);
deserialized = DeserializeHistogramInfo(&iter2);
EXPECT_TRUE(deserialized);
EXPECT_NE(histogram, deserialized);
EXPECT_EQ("TestHistogram", deserialized->histogram_name());
EXPECT_TRUE(deserialized->HasConstructionArguments(1, 1000, 10));
EXPECT_EQ(0, deserialized->flags());
}
TEST_F(HistogramBaseTest, DeserializeBooleanHistogram) {
HistogramBase* histogram = BooleanHistogram::FactoryGet(
"TestHistogram", HistogramBase::kIPCSerializationSourceFlag);
Pickle pickle;
ASSERT_TRUE(histogram->SerializeInfo(&pickle));
PickleIterator iter(pickle);
HistogramBase* deserialized = DeserializeHistogramInfo(&iter);
EXPECT_EQ(histogram, deserialized);
ResetStatisticsRecorder();
PickleIterator iter2(pickle);
deserialized = DeserializeHistogramInfo(&iter2);
EXPECT_TRUE(deserialized);
EXPECT_NE(histogram, deserialized);
EXPECT_EQ("TestHistogram", deserialized->histogram_name());
EXPECT_TRUE(deserialized->HasConstructionArguments(1, 2, 3));
EXPECT_EQ(0, deserialized->flags());
}
TEST_F(HistogramBaseTest, DeserializeCustomHistogram) {
std::vector<HistogramBase::Sample> ranges;
ranges.push_back(13);
ranges.push_back(5);
ranges.push_back(9);
HistogramBase* histogram = CustomHistogram::FactoryGet(
"TestHistogram", ranges, HistogramBase::kIPCSerializationSourceFlag);
Pickle pickle;
ASSERT_TRUE(histogram->SerializeInfo(&pickle));
PickleIterator iter(pickle);
HistogramBase* deserialized = DeserializeHistogramInfo(&iter);
EXPECT_EQ(histogram, deserialized);
ResetStatisticsRecorder();
PickleIterator iter2(pickle);
deserialized = DeserializeHistogramInfo(&iter2);
EXPECT_TRUE(deserialized);
EXPECT_NE(histogram, deserialized);
EXPECT_EQ("TestHistogram", deserialized->histogram_name());
EXPECT_TRUE(deserialized->HasConstructionArguments(5, 13, 4));
EXPECT_EQ(0, deserialized->flags());
}
TEST_F(HistogramBaseTest, DeserializeSparseHistogram) {
HistogramBase* histogram = SparseHistogram::FactoryGet(
"TestHistogram", HistogramBase::kIPCSerializationSourceFlag);
Pickle pickle;
ASSERT_TRUE(histogram->SerializeInfo(&pickle));
PickleIterator iter(pickle);
HistogramBase* deserialized = DeserializeHistogramInfo(&iter);
EXPECT_EQ(histogram, deserialized);
ResetStatisticsRecorder();
PickleIterator iter2(pickle);
deserialized = DeserializeHistogramInfo(&iter2);
EXPECT_TRUE(deserialized);
EXPECT_NE(histogram, deserialized);
EXPECT_EQ("TestHistogram", deserialized->histogram_name());
EXPECT_EQ(0, deserialized->flags());
}
} // namespace base
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