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/*
* Copyright (C) 2016, Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.junit.time;
import java.time.Duration;
import java.util.concurrent.TimeUnit;
import org.eclipse.jgit.util.time.MonotonicClock;
import org.eclipse.jgit.util.time.ProposedTimestamp;
/**
* Fake {@link org.eclipse.jgit.util.time.MonotonicClock} for testing code that
* uses Clock.
*
* @since 4.6
*/
public class MonotonicFakeClock implements MonotonicClock {
private long now = TimeUnit.SECONDS.toMicros(42);
/**
* Advance the time returned by future calls to {@link #propose()}.
*
* @param add
* amount of time to add; must be {@code > 0}.
* @param unit
* unit of {@code add}.
*/
public void tick(long add, TimeUnit unit) {
if (add <= 0) {
throw new IllegalArgumentException();
}
now += unit.toMillis(add);
}
/** {@inheritDoc} */
@Override
public ProposedTimestamp propose() {
long t = now++;
return new ProposedTimestamp() {
@Override
public long read(TimeUnit unit) {
return unit.convert(t, TimeUnit.MILLISECONDS);
}
@Override
public void blockUntil(Duration maxWait) {
// Nothing to do, since fake time does not go backwards.
}
};
}
}
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