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// Copyright (C) 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef ICING_TESTING_FAKE_CLOCK_H_
#define ICING_TESTING_FAKE_CLOCK_H_
#include "icing/util/clock.h"
namespace icing {
namespace lib {
// A fake timer class for tests. It makes sure that the elapsed time changes
// every time it's requested.
class FakeTimer : public Timer {
public:
int64_t GetElapsedMilliseconds() override {
return fake_elapsed_milliseconds_;
}
void SetElapsedMilliseconds(int64_t elapsed_milliseconds) {
fake_elapsed_milliseconds_ = elapsed_milliseconds;
}
private:
int64_t fake_elapsed_milliseconds_ = 0;
};
// Wrapper around real-time clock functions. This is separated primarily so
// tests can override this clock and inject it into the class under test.
class FakeClock : public Clock {
public:
int64_t GetSystemTimeMilliseconds() const override { return milliseconds_; }
void SetSystemTimeMilliseconds(int64_t milliseconds) {
milliseconds_ = milliseconds;
}
std::unique_ptr<Timer> GetNewTimer() const override {
return std::make_unique<FakeTimer>(fake_timer_);
}
void SetTimerElapsedMilliseconds(int64_t timer_elapsed_milliseconds) {
fake_timer_.SetElapsedMilliseconds(timer_elapsed_milliseconds);
}
private:
int64_t milliseconds_ = 0;
FakeTimer fake_timer_;
};
} // namespace lib
} // namespace icing
#endif // ICING_TESTING_FAKE_CLOCK_H_
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