/*
    * 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.collections4.collection;
  
  import static java.util.Arrays.asList;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collection;
  
  import org.apache.commons.collections4.Transformer;
  import org.junit.jupiter.api.Test;
  
  /**
   * Extension of {@link AbstractCollectionTest} for exercising the
   * {@link IndexedCollection} implementation.
   */
  @SuppressWarnings("boxing")
  public class IndexedCollectionTest extends AbstractCollectionTest<String> {
  
      private static final class IntegerTransformer implements Transformer<String, Integer>, Serializable {
          private static final long serialVersionUID = 809439581555072949L;
  
          @Override
          public Integer transform(final String input) {
              return Integer.valueOf(input);
          }
      }
  
      protected Collection<String> decorateCollection(final Collection<String> collection) {
          return IndexedCollection.nonUniqueIndexedCollection(collection, new IntegerTransformer());
      }
  
      protected IndexedCollection<Integer, String> decorateUniqueCollection(final Collection<String> collection) {
          return IndexedCollection.uniqueIndexedCollection(collection, new IntegerTransformer());
      }
  
      @Override
      public String[] getFullElements() {
          return new String[] { "1", "3", "5", "7", "2", "4", "6" };
      }
  
      @Override
      public String[] getOtherElements() {
          return new String[] {"9", "88", "678", "87", "98", "78", "99"};
      }
  
      @Override
      public Collection<String> makeConfirmedCollection() {
          return new ArrayList<>();
      }
  
      @Override
      public Collection<String> makeConfirmedFullCollection() {
          return new ArrayList<>(Arrays.asList(getFullElements()));
      }
  
      @Override
      public Collection<String> makeFullCollection() {
          return decorateCollection(new ArrayList<>(Arrays.asList(getFullElements())));
      }
  
      @Override
      public Collection<String> makeObject() {
          return decorateCollection(new ArrayList<>());
      }
  
      public Collection<String> makeTestCollection() {
          return decorateCollection(new ArrayList<>());
      }
  
      public Collection<String> makeUniqueTestCollection() {
          return decorateUniqueCollection(new ArrayList<>());
      }
  
      @Override
      protected boolean skipSerializedCanonicalTests() {
          // FIXME: support canonical tests
          return true;
      }
  
     @Test
     public void testAddedObjectsCanBeRetrievedByKey() throws Exception {
         final Collection<String> coll = makeTestCollection();
         coll.add("12");
         coll.add("16");
         coll.add("1");
         coll.addAll(asList("2", "3", "4"));
 
         @SuppressWarnings("unchecked")
         final IndexedCollection<Integer, String> indexed = (IndexedCollection<Integer, String>) coll;
         assertEquals("12", indexed.get(12));
         assertEquals("16", indexed.get(16));
         assertEquals("1", indexed.get(1));
         assertEquals("2", indexed.get(2));
         assertEquals("3", indexed.get(3));
         assertEquals("4", indexed.get(4));
     }
 
     @Test
     public void testDecoratedCollectionIsIndexedOnCreation() throws Exception {
         final Collection<String> original = makeFullCollection();
         final IndexedCollection<Integer, String> indexed = decorateUniqueCollection(original);
 
         assertEquals("1", indexed.get(1));
         assertEquals("2", indexed.get(2));
         assertEquals("3", indexed.get(3));
     }
 
     @Test
     public void testEnsureDuplicateObjectsCauseException() throws Exception {
         final Collection<String> coll = makeUniqueTestCollection();
 
         coll.add("1");
 
         assertThrows(IllegalArgumentException.class, () -> coll.add("1"));
     }
 
     @Test
     public void testReindexUpdatesIndexWhenDecoratedCollectionIsModifiedSeparately() throws Exception {
         final Collection<String> original = new ArrayList<>();
         final IndexedCollection<Integer, String> indexed = decorateUniqueCollection(original);
 
         original.add("1");
         original.add("2");
         original.add("3");
 
         assertNull(indexed.get(1));
         assertNull(indexed.get(2));
         assertNull(indexed.get(3));
 
         indexed.reindex();
 
         assertEquals("1", indexed.get(1));
         assertEquals("2", indexed.get(2));
         assertEquals("3", indexed.get(3));
     }
 
 }