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.activemq.util;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotSame;
  import static org.junit.Assert.assertTrue;
  
  import org.junit.Test;
  
  public class StopWatchTest {
  
      @Test
      public void testStopWatch() throws Exception {
          StopWatch watch = new StopWatch();
          Thread.sleep(200);
          long taken = watch.stop();
  
          assertEquals(taken, watch.taken());
          assertTrue("Should take approx 200 millis, was: " + taken, taken > 150);
      }
  
      @Test
      public void testStopWatchNotStarted() throws Exception {
          StopWatch watch = new StopWatch(false);
          long taken = watch.stop();
          assertEquals(0, taken);
  
          watch.restart();
          Thread.sleep(200);
          taken = watch.stop();
  
          assertEquals(taken, watch.taken());
          assertTrue("Should take approx 200 millis, was: " + taken, taken > 150);
      }
  
      @Test
      public void testStopWatchRestart() throws Exception {
          StopWatch watch = new StopWatch();
          Thread.sleep(200);
          long taken = watch.stop();
  
          assertEquals(taken, watch.taken());
          assertTrue("Should take approx 200 millis, was: " + taken, taken > 150);
  
          watch.restart();
          Thread.sleep(100);
          taken = watch.stop();
  
          assertEquals(taken, watch.taken());
          assertTrue("Should take approx 100 millis, was: " + taken, taken > 50);
      }
  
      @Test
      public void testStopWatchTaken() throws Exception {
          StopWatch watch = new StopWatch();
          Thread.sleep(100);
          long taken = watch.taken();
          Thread.sleep(100);
          long taken2 = watch.taken();
          assertNotSame(taken, taken2);
          assertTrue(taken2 > taken);
      }
  }