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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.test;
import com.google.inject.Inject;
import java.time.Clock;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAmount;
/**
* A clock which initially has the time of its creation but can only be advanced by calling advance
*
* @author bratseth
*/
public class ManualClock extends Clock {
private Instant currentTime = Instant.now();
@Inject
public ManualClock() {}
public ManualClock(String utcIsoTime) {
this(at(utcIsoTime));
}
public ManualClock(Instant currentTime) {
this.currentTime = currentTime;
}
public void advance(TemporalAmount temporal) {
currentTime = currentTime.plus(temporal);
}
public void setInstant(Instant time) {
currentTime = time;
}
@Override
public Instant instant() { return currentTime; }
@Override
public ZoneId getZone() { return null; }
@Override
public Clock withZone(ZoneId zone) { return null; }
@Override
public long millis() { return currentTime.toEpochMilli(); }
public static Instant at(String utcIsoTime) {
return LocalDateTime.parse(utcIsoTime, DateTimeFormatter.ISO_DATE_TIME).atZone(ZoneOffset.UTC).toInstant();
}
}
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