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* ownership. Elasticsearch licenses this file to you 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
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*/
package org.elasticsearch.common.util.concurrent;
import org.elasticsearch.common.Priority;
import org.elasticsearch.test.ESTestCase;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
import static org.hamcrest.Matchers.greaterThanOrEqualTo;
public class PrioritizedRunnableTests extends ESTestCase {
// test unit conversion with a controlled clock
public void testGetAgeInMillis() throws Exception {
AtomicLong time = new AtomicLong();
PrioritizedRunnable runnable = new PrioritizedRunnable(Priority.NORMAL, time::get) {
@Override
public void run() {
}
};
assertEquals(0, runnable.getAgeInMillis());
int milliseconds = randomIntBetween(1, 256);
time.addAndGet(TimeUnit.NANOSECONDS.convert(milliseconds, TimeUnit.MILLISECONDS));
assertEquals(milliseconds, runnable.getAgeInMillis());
}
// test age advances with System#nanoTime
public void testGetAgeInMillisWithRealClock() throws InterruptedException {
PrioritizedRunnable runnable = new PrioritizedRunnable(Priority.NORMAL) {
@Override
public void run() {
}
};
long elapsed = spinForAtLeastOneMillisecond();
// creation happened before start, so age will be at least as
// large as elapsed
assertThat(runnable.getAgeInMillis(), greaterThanOrEqualTo(TimeUnit.MILLISECONDS.convert(elapsed, TimeUnit.NANOSECONDS)));
}
}