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// Copyright 2016 The Bazel Authors. All Rights Reserved.
//
// 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.
package com.google.testing.junit.runner.model;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
/**
* Implementation of an immutable time interval, representing a period of time between two instants.
*
* <p>This class is thread-safe and immutable.
*/
final class TestInterval {
private final long startInstant;
private final long endInstant;
TestInterval(long startInstant, long endInstant) {
if (startInstant > endInstant) {
throw new IllegalArgumentException("Start must be before end");
}
this.startInstant = startInstant;
this.endInstant = endInstant;
}
long getStartMillis() {
return startInstant;
}
long getEndMillis() {
return endInstant;
}
long toDurationMillis() {
return endInstant - startInstant;
}
TestInterval withEndMillis(long millis) {
return new TestInterval(startInstant, millis);
}
String startInstantToString() {
// Format as ISO8601 string
return startInstantToString(TimeZone.getDefault());
}
/** Exposed for testing because java Date does not allow setting of timezones. */
// VisibleForTesting
String startInstantToString(TimeZone tz) {
DateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX");
format.setTimeZone(tz);
return format.format(new Date(startInstant));
}
}