/*
    * 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.list;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import java.util.ListIterator;
  
  import org.apache.commons.collections4.Transformer;
  import org.apache.commons.collections4.collection.TransformedCollectionTest;
  import org.junit.jupiter.api.Test;
  
  /**
   * Extension of {@link AbstractListTest} for exercising the {@link TransformedList}
   * implementation.
   */
  public class TransformedListTest<E> extends AbstractListTest<E> {
  
      @Override
      public String getCompatibilityVersion() {
          return "4";
      }
  
      @Override
      public List<E> makeConfirmedCollection() {
          return new ArrayList<>();
      }
  
      @Override
      public List<E> makeConfirmedFullCollection() {
          return new ArrayList<>(Arrays.asList(getFullElements()));
      }
  
      @Override
      @SuppressWarnings("unchecked")
      public List<E> makeFullCollection() {
          final List<E> list = new ArrayList<>(Arrays.asList(getFullElements()));
          return TransformedList.transformingList(list, (Transformer<E, E>) TransformedCollectionTest.NOOP_TRANSFORMER);
      }
  
      @Override
      @SuppressWarnings("unchecked")
      public List<E> makeObject() {
          return TransformedList.transformingList(new ArrayList<>(), (Transformer<E, E>) TransformedCollectionTest.NOOP_TRANSFORMER);
      }
  
      @Test
      public void testSubList() {
          final List<E> list = makeObject();
          List<E> subList = list.subList(0, 0);
          assertNotNull(subList);
          list.add((E) "zero");
          //subList without any element of list
          subList = list.subList(0, 0);
          assertNotNull(subList);
          assertEquals(0, subList.size());
  
          //subList with one element oif list
          subList = list.subList(0, 1);
          assertEquals(1, subList.size());
  
          final List<E> elements = new ArrayList<>();
          elements.add((E) "one");
          elements.add((E) "two");
          elements.add((E) "three");
          list.addAll(1, elements);
          //subList with all elements of list
          subList = list.subList(0, list.size());
          assertEquals(list.size(), subList.size());
      }
  
      @Test
      @SuppressWarnings("unchecked")
      public void testTransformedList() {
          final List<E> list = TransformedList.transformingList(new ArrayList<>(), (Transformer<E, E>) TransformedCollectionTest.STRING_TO_INTEGER_TRANSFORMER);
          assertEquals(0, list.size());
          final E[] els = (E[]) new Object[] {"1", "3", "5", "7", "2", "4", "6"};
          for (int i = 0; i < els.length; i++) {
             list.add(els[i]);
             assertEquals(i + 1, list.size());
             assertTrue(list.contains(Integer.valueOf((String) els[i])));
             assertFalse(list.contains(els[i]));
         }
 
         assertFalse(list.remove(els[0]));
         assertTrue(list.remove(Integer.valueOf((String) els[0])));
 
         list.clear();
         for (int i = 0; i < els.length; i++) {
             list.add(0, els[i]);
             assertEquals(i + 1, list.size());
             assertEquals(Integer.valueOf((String) els[i]), list.get(0));
         }
 
         list.set(0, (E) "22");
         assertEquals(Integer.valueOf(22), list.get(0));
 
         final ListIterator<E> it = list.listIterator();
         it.next();
         it.set((E) "33");
         assertEquals(Integer.valueOf(33), list.get(0));
         it.add((E) "44");
         assertEquals(Integer.valueOf(44), list.get(1));
 
         final List<E> adds = new ArrayList<>();
         adds.add((E) "1");
         adds.add((E) "2");
         list.clear();
         list.addAll(adds);
         assertEquals(Integer.valueOf(1), list.get(0));
         assertEquals(Integer.valueOf(2), list.get(1));
 
         adds.clear();
         adds.add((E) "3");
         list.addAll(1, adds);
         assertEquals(Integer.valueOf(1), list.get(0));
         assertEquals(Integer.valueOf(3), list.get(1));
         assertEquals(Integer.valueOf(2), list.get(2));
     }
 
     @Test
     public void testTransformedList_decorateTransform() {
         final List<Object> originalList = new ArrayList<>();
         final Object[] els = {"1", "3", "5", "7", "2", "4", "6"};
         Collections.addAll(originalList, els);
         final List<?> list = TransformedList.transformedList(originalList, TransformedCollectionTest.STRING_TO_INTEGER_TRANSFORMER);
         assertEquals(els.length, list.size());
         for (final Object el : els) {
             assertTrue(list.contains(Integer.valueOf((String) el)));
             assertFalse(list.contains(el));
         }
 
         assertFalse(list.remove(els[0]));
         assertTrue(list.remove(Integer.valueOf((String) els[0])));
     }
 
 //    public void testCreate() throws Exception {
 //        resetEmpty();
 //        writeExternalFormToDisk((java.io.Serializable) getCollection(), "src/test/resources/data/test/TransformedList.emptyCollection.version4.obj");
 //        resetFull();
 //        writeExternalFormToDisk((java.io.Serializable) getCollection(), "src/test/resources/data/test/TransformedList.fullCollection.version4.obj");
 //    }
 
 }