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    *  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.commons.compress.harmony.unpack200;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.util.List;
  
  import org.junit.jupiter.api.Test;
  
  public class SegmentConstantPoolArrayCacheTest {
  
      @Test
      public void testMultipleArrayMultipleHit() {
          final SegmentConstantPoolArrayCache arrayCache = new SegmentConstantPoolArrayCache();
          final String[] arrayOne = { "Zero", "Shared", "Two", "Shared", "Shared" };
          final String[] arrayTwo = { "Shared", "One", "Shared", "Shared", "Shared" };
  
          List<Integer> listOne = arrayCache.indexesForArrayKey(arrayOne, "Shared");
          List<Integer> listTwo = arrayCache.indexesForArrayKey(arrayTwo, "Shared");
          // Make sure we're using the cached values. First trip
          // through builds the cache.
          listOne = arrayCache.indexesForArrayKey(arrayOne, "Two");
          listTwo = arrayCache.indexesForArrayKey(arrayTwo, "Shared");
  
          assertEquals(1, listOne.size());
          assertEquals(2, listOne.get(0).intValue());
  
          // Now look for a different element in list one
          listOne = arrayCache.indexesForArrayKey(arrayOne, "Shared");
          assertEquals(3, listOne.size());
          assertEquals(1, listOne.get(0).intValue());
          assertEquals(3, listOne.get(1).intValue());
          assertEquals(4, listOne.get(2).intValue());
  
          assertEquals(4, listTwo.size());
          assertEquals(0, listTwo.get(0).intValue());
          assertEquals(2, listTwo.get(1).intValue());
          assertEquals(3, listTwo.get(2).intValue());
          assertEquals(4, listTwo.get(3).intValue());
  
          final List<Integer> listThree = arrayCache.indexesForArrayKey(arrayOne, "Not found");
          assertEquals(0, listThree.size());
      }
  
      @Test
      public void testSingleMultipleHitArray() {
          final SegmentConstantPoolArrayCache arrayCache = new SegmentConstantPoolArrayCache();
          final String[] array = { "Zero", "OneThreeFour", "Two", "OneThreeFour", "OneThreeFour" };
          final List<Integer> list = arrayCache.indexesForArrayKey(array, "OneThreeFour");
          assertEquals(3, list.size());
          assertEquals(1, list.get(0).intValue());
          assertEquals(3, list.get(1).intValue());
          assertEquals(4, list.get(2).intValue());
      }
  
      @Test
      public void testSingleSimpleArray() {
          final SegmentConstantPoolArrayCache arrayCache = new SegmentConstantPoolArrayCache();
          final String[] array = { "Zero", "One", "Two", "Three", "Four" };
          final List<Integer> list = arrayCache.indexesForArrayKey(array, "Three");
          assertEquals(1, list.size());
          assertEquals(3, list.get(0).intValue());
      }
  
  }