RangeStatisticTest.java

/**
 * 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.management;

public class RangeStatisticTest extends StatisticTestSupport {

   private static final org.apache.commons.logging.Log LOG = org.apache.commons.logging.LogFactory.getLog(RangeStatisticTest.class);

   /**
    * Use case for RangeStatisticImpl class.
    *
    * @throws Exception
    */
   public void testStatistic() throws Exception {
      RangeStatisticImpl stat = new RangeStatisticImpl("myRange", "millis", "myDescription");
      assertStatistic(stat, "myRange", "millis", "myDescription");

      assertRangeStatistic(stat);
   }

   protected void assertRangeStatistic(RangeStatisticImpl stat) throws InterruptedException {
      assertEquals(0, stat.getCurrent());
      assertEquals(0, stat.getLowWaterMark());
      assertEquals(0, stat.getHighWaterMark());

      stat.setCurrent(100);
      assertEquals(100, stat.getCurrent());
      assertEquals(100, stat.getLowWaterMark());
      assertEquals(100, stat.getHighWaterMark());

      stat.setCurrent(50);
      assertEquals(50, stat.getCurrent());
      assertEquals(50, stat.getLowWaterMark());
      assertEquals(100, stat.getHighWaterMark());

      stat.setCurrent(200);
      assertEquals(200, stat.getCurrent());
      assertEquals(50, stat.getLowWaterMark());
      assertEquals(200, stat.getHighWaterMark());

      Thread.sleep(500);

      stat.setCurrent(10);
      assertEquals(10, stat.getCurrent());
      assertEquals(10, stat.getLowWaterMark());
      assertEquals(200, stat.getHighWaterMark());

      assertLastTimeNotStartTime(stat);

      LOG.info("Stat is: " + stat);

      stat.reset();

      assertEquals(0, stat.getCurrent());
      assertEquals(0, stat.getLowWaterMark());
      assertEquals(0, stat.getHighWaterMark());

      stat.setCurrent(100);
      assertEquals(100, stat.getCurrent());
      assertEquals(100, stat.getLowWaterMark());
      assertEquals(100, stat.getHighWaterMark());
   }
}