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 org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.junit.Test;
  
  public class LRUCacheTest {
      protected static final Logger LOG = LoggerFactory.getLogger(LRUCacheTest.class);
      
      @Test
      public void testResize() throws Exception {
          LRUCache<Long, Long> underTest = new LRUCache<Long, Long>(1000);
          
          Long count = 0L;
          long max = 0;
          for (; count < 27276827; count++) {
              long start = System.currentTimeMillis();
              if (!underTest.containsKey(count)) {
                  underTest.put(count, count);
              }
              long duration = System.currentTimeMillis() - start;
              if (duration > max) {
                  LOG.info("count: " + count + ", new max=" + duration);
                  max = duration;
              }
              if (count % 100000000 == 0) {
                  LOG.info("count: " + count + ", max=" + max);
              }
          }
          assertEquals("size is still in order", 1000, underTest.size());
      }
  }
  