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- #ifndef BASE_TEST_METRICS_HISTOGRAM_TESTER_H_
- #define BASE_TEST_METRICS_HISTOGRAM_TESTER_H_
- #include <functional>
- #include <map>
- #include <memory>
- #include <ostream>
- #include <string>
- #include <utility>
- #include <vector>
- #include "base/macros.h"
- #include "base/metrics/histogram.h"
- #include "base/metrics/histogram_base.h"
- #include "base/strings/string_piece.h"
- #include "base/time/time.h"
- namespace base {
- struct Bucket;
- class HistogramSamples;
- class HistogramTester {
- public:
- using CountsMap = std::map<std::string, HistogramBase::Count, std::less<>>;
-
- HistogramTester();
- ~HistogramTester();
-
-
-
- void ExpectUniqueSample(StringPiece name,
- HistogramBase::Sample sample,
- HistogramBase::Count expected_count) const;
- template <typename T>
- void ExpectUniqueSample(StringPiece name,
- T sample,
- HistogramBase::Count expected_count) const {
- ExpectUniqueSample(name, static_cast<HistogramBase::Sample>(sample),
- expected_count);
- }
- void ExpectUniqueTimeSample(StringPiece name,
- TimeDelta sample,
- HistogramBase::Count expected_count) const;
-
-
-
- void ExpectBucketCount(StringPiece name,
- HistogramBase::Sample sample,
- HistogramBase::Count expected_count) const;
- template <typename T>
- void ExpectBucketCount(StringPiece name,
- T sample,
- HistogramBase::Count expected_count) const {
- ExpectBucketCount(name, static_cast<HistogramBase::Sample>(sample),
- expected_count);
- }
-
-
-
- void ExpectTotalCount(StringPiece name, HistogramBase::Count count) const;
-
-
- void ExpectTimeBucketCount(StringPiece name,
- TimeDelta sample,
- HistogramBase::Count count) const;
-
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- std::vector<Bucket> GetAllSamples(StringPiece name) const;
-
- HistogramBase::Count GetBucketCount(StringPiece name,
- HistogramBase::Sample sample) const;
- template <typename T>
- HistogramBase::Count GetBucketCount(StringPiece name, T sample) const {
- return GetBucketCount(name, static_cast<HistogramBase::Sample>(sample));
- }
-
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- CountsMap GetTotalCountsForPrefix(StringPiece prefix) const;
-
-
- std::unique_ptr<HistogramSamples> GetHistogramSamplesSinceCreation(
- StringPiece histogram_name) const;
-
-
-
- std::string GetAllHistogramsRecorded() const;
- private:
-
-
-
- void CheckBucketCount(StringPiece name,
- HistogramBase::Sample sample,
- Histogram::Count expected_count,
- const HistogramSamples& samples) const;
-
-
-
- void CheckTotalCount(StringPiece name,
- Histogram::Count expected_count,
- const HistogramSamples& samples) const;
-
-
-
- void GetBucketCountForSamples(StringPiece name,
- HistogramBase::Sample sample,
- const HistogramSamples& samples,
- HistogramBase::Count* count) const;
-
-
- std::map<std::string, std::unique_ptr<HistogramSamples>, std::less<>>
- histograms_snapshot_;
- DISALLOW_COPY_AND_ASSIGN(HistogramTester);
- };
- struct Bucket {
- Bucket(HistogramBase::Sample min, HistogramBase::Count count)
- : min(min), count(count) {}
- bool operator==(const Bucket& other) const;
- HistogramBase::Sample min;
- HistogramBase::Count count;
- };
- void PrintTo(const Bucket& value, std::ostream* os);
- }
- #endif
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