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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include "mongo/util/tick_source.h"
#include "mongo/util/time_support.h"
namespace mongo {
/**
* Mock tick source that can be parameterized on a duration type.
*
* Its internal tick count will be tracked in the unit of the duration type parameter. For example,
* for TickSourceMock<Milliseconds>, 1 tick = 1 millisecond. It gives a fixed tick count until the
* advance method is called.
*/
template <typename D = Milliseconds>
class TickSourceMock final : public TickSource {
public:
TickSource::Tick getTicks() override {
return _currentTicks;
};
TickSource::Tick getTicksPerSecond() override {
static_assert(D::period::num == 1,
"Cannot measure ticks per second for duration types larger than 1 second.");
return D::period::den;
};
/**
* Advance the ticks by the given amount of milliseconds.
*/
void advance(const D& duration) {
_currentTicks += duration.count();
}
/**
* Resets the tick count to the given value.
*/
void reset(TickSource::Tick tick) {
_currentTicks = std::move(tick);
}
private:
TickSource::Tick _currentTicks = 0;
};
} // namespace mongo
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