/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 under the License.
*/
package com.twitter.distributedlog.util;
import org.junit.Test;
import static org.junit.Assert.*;
public class TestTimeSequencer {
@Test(timeout = 60000)
public void testNonDecreasingId() {
TimeSequencer sequencer = new TimeSequencer();
long lastId = System.currentTimeMillis() + 3600000;
sequencer.setLastId(lastId);
for (int i = 0; i < 10; i++) {
assertEquals(lastId, sequencer.nextId());
}
sequencer.setLastId(15);
long prevId = 15;
for (int i = 0; i < 10; i++) {
long newId = sequencer.nextId();
assertTrue("id should not decrease",
newId >= prevId);
prevId = newId;
}
}
}