iotdb-core/tsfile/src/test/java/org/apache/iotdb/tsfile/common/LRUCacheTest.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.iotdb.tsfile.common;

import org.apache.iotdb.tsfile.common.cache.LRUCache;

import org.junit.Assert;
import org.junit.Test;

import java.io.IOException;

public class LRUCacheTest {

  private LRUCache<Integer, Integer> cache;

  @Test
  public void test() {
    try {
      int testCount = 1000;
      int cacheSize = 5;
      cache =
          new LRUCache<Integer, Integer>(cacheSize) {

            @Override
            public Integer loadObjectByKey(Integer key) {
              return key * 10;
            }
          };

      for (int i = 1; i < testCount; i++) {
        Assert.assertEquals(i * 10, (int) cache.get(i));
        Assert.assertEquals((i - 1) * 10, (int) cache.get(i - 1));
      }
    } catch (IOException e) {
      e.printStackTrace();
      Assert.fail();
    }
  }
}