/*
    * 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.set;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.Iterator;
  import java.util.Set;
  
  import org.apache.commons.collections4.map.LinkedMap;
  import org.junit.jupiter.api.Test;
  
  /**
   * JUnit test.
   */
  public class MapBackedSet2Test<E> extends AbstractSetTest<E> {
  
      public MapBackedSet2Test() {
          super(MapBackedSet2Test.class.getSimpleName());
      }
  
      @Override
      public Set<E> makeObject() {
          return MapBackedSet.mapBackedSet(new LinkedMap<>());
      }
  
      @SuppressWarnings("unchecked")
      protected Set<E> setupSet() {
          final Set<E> set = makeObject();
  
          for (int i = 0; i < 10; i++) {
              set.add((E) Integer.toString(i));
          }
          return set;
      }
  
      @Test
      @Override
      public void testCanonicalEmptyCollectionExists() {
      }
  
      @Test
      @Override
      public void testCanonicalFullCollectionExists() {
      }
  
      @Test
      @SuppressWarnings("unchecked")
      public void testOrdering() {
          final Set<E> set = setupSet();
          Iterator<E> it = set.iterator();
  
          for (int i = 0; i < 10; i++) {
              assertEquals(Integer.toString(i), it.next(), "Sequence is wrong");
          }
  
          for (int i = 0; i < 10; i += 2) {
              assertTrue(set.remove(Integer.toString(i)), "Must be able to remove int");
          }
  
          it = set.iterator();
          for (int i = 1; i < 10; i += 2) {
              assertEquals(Integer.toString(i), it.next(), "Sequence is wrong after remove ");
          }
  
          for (int i = 0; i < 10; i++) {
              set.add((E) Integer.toString(i));
          }
  
          assertEquals(10, set.size(), "Size of set is wrong!");
  
          it = set.iterator();
          for (int i = 1; i < 10; i += 2) {
              assertEquals(Integer.toString(i), it.next(), "Sequence is wrong");
          }
          for (int i = 0; i < 10; i += 2) {
              assertEquals(Integer.toString(i), it.next(), "Sequence is wrong");
          }
      }
  
  }