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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_FEEDBACK_REDACTION_TOOL_METRICS_TESTER_H_
#define COMPONENTS_FEEDBACK_REDACTION_TOOL_METRICS_TESTER_H_
#include <memory>
#include <string_view>
#include "components/feedback/redaction_tool/redaction_tool_metrics_recorder.h"
namespace redaction {
// A helper class for testing metric collection on Chromium and ChromiumOS.
class MetricsTester {
public:
// Create a new instance of the default implementation for this platform.
static std::unique_ptr<MetricsTester> Create();
MetricsTester() = default;
MetricsTester(const MetricsTester&) = delete;
MetricsTester& operator=(const MetricsTester&) = delete;
virtual ~MetricsTester() = default;
// Get the number of times a histogram value was recorded while this instance
// exists and the values are recorded with the recorder from
// `SetupRecorder()`.
virtual size_t GetBucketCount(std::string_view histogram_name,
int histogram_value) = 0;
// Get the number of entries for the `histogram_name`.
virtual size_t GetNumBucketEntries(std::string_view histogram_name) = 0;
// Create a `RedactionToolMetricsRecorder` that is configured so it can return
// metric values in `GetBucketCount()`.
virtual std::unique_ptr<RedactionToolMetricsRecorder> SetupRecorder() = 0;
};
} // namespace redaction
#endif // COMPONENTS_FEEDBACK_REDACTION_TOOL_METRICS_TESTER_H_
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