/*
    * 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.bag;
  
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.Arrays;
  
  import org.apache.commons.collections4.Bag;
  import org.apache.commons.collections4.Unmodifiable;
  import org.apache.commons.collections4.collection.AbstractCollectionTest;
  import org.junit.jupiter.api.Test;
  
  /**
   * Extension of {@link AbstractCollectionTest} for exercising the
   * {@link UnmodifiableBag} implementation.
   */
  public class UnmodifiableBagTest<E> extends AbstractBagTest<E> {
  
      @Override
      public Bag<E> getCollection() {
          return super.getCollection();
      }
  
      @Override
      public String getCompatibilityVersion() {
          return "4";
      }
  
      @Override
      protected int getIterationBehaviour() {
          return UNORDERED;
      }
  
      @Override
      public boolean isAddSupported() {
          return false;
      }
  
      @Override
      public boolean isNullSupported() {
          return false;
      }
  
      @Override
      public boolean isRemoveSupported() {
          return false;
      }
  
      @Override
      public Bag<E> makeFullCollection() {
          final Bag<E> bag = new HashBag<>();
          bag.addAll(Arrays.asList(getFullElements()));
          return UnmodifiableBag.unmodifiableBag(bag);
      }
  
      @Override
      public Bag<E> makeObject() {
          return UnmodifiableBag.unmodifiableBag(new HashBag<>());
      }
  
      @Test
      public void testDecorateFactory() {
          final Bag<E> queue = makeFullCollection();
          assertSame(queue, UnmodifiableBag.unmodifiableBag(queue));
  
          assertThrows(NullPointerException.class, () -> UnmodifiableBag.unmodifiableBag(null));
      }
  
      @Test
      public void testUnmodifiable() {
          assertTrue(makeObject() instanceof Unmodifiable);
          assertTrue(makeFullCollection() instanceof Unmodifiable);
      }
  
  //    public void testCreate() throws Exception {
  //        Bag<E> bag = makeObject();
  //        writeExternalFormToDisk((java.io.Serializable) bag, "src/test/resources/data/test/UnmodifiableBag.emptyCollection.version4.obj");
  //        bag = makeFullCollection();
  //        writeExternalFormToDisk((java.io.Serializable) bag, "src/test/resources/data/test/UnmodifiableBag.fullCollection.version4.obj");
  //    }
  
  }