content: /*
   * 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 org.apache.distributedlog.util;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  import org.junit.Test;
  
  
  /**
   * Test Case for {@link TimeSequencer}.
   */
  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;
          }
      }
  }
  