/*
    * 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.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import org.apache.commons.collections4.Predicate;
  import org.apache.commons.collections4.functors.TruePredicate;
  import org.junit.jupiter.api.Test;
  
  /**
   * Extension of {@link AbstractSetTest} for exercising the
   * {@link PredicatedSet} implementation.
   */
  public class PredicatedSetTest<E> extends AbstractSetTest<E> {
  
      protected Predicate<E> truePredicate = TruePredicate.<E>truePredicate();
  
      protected Predicate<E> testPredicate =
          String.class::isInstance;
  
      protected PredicatedSet<E> decorateSet(final Set<E> set, final Predicate<? super E> predicate) {
          return PredicatedSet.predicatedSet(set, predicate);
      }
  
      @Override
      public String getCompatibilityVersion() {
          return "4";
      }
  
      @Override
      @SuppressWarnings("unchecked")
      public E[] getFullElements() {
          return (E[]) new Object[] {"1", "3", "5", "7", "2", "4", "6"};
      }
  
      @Override
      protected int getIterationBehaviour() {
          return UNORDERED;
      }
  
      @Override
      public PredicatedSet<E> makeObject() {
          return decorateSet(new HashSet<>(), truePredicate);
      }
  
      protected PredicatedSet<E> makeTestSet() {
          return decorateSet(new HashSet<>(), testPredicate);
      }
  
      @Test
      public void testGetSet() {
          final PredicatedSet<E> set = makeTestSet();
          assertNotNull(set.decorated(), "returned set should not be null");
      }
  
      @Test
      @SuppressWarnings("unchecked")
      public void testIllegalAdd() {
          final Set<E> set = makeTestSet();
          final Integer i = Integer.valueOf(3);
          assertThrows(IllegalArgumentException.class, () -> set.add((E) i),
                  "Integer should fail string predicate.");
          assertFalse(set.contains(i), "Collection shouldn't contain illegal element");
      }
  
      @Test
      @SuppressWarnings("unchecked")
      public void testIllegalAddAll() {
          final Set<E> set = makeTestSet();
          final Set<E> elements = new HashSet<>();
          elements.add((E) "one");
          elements.add((E) "two");
          elements.add((E) Integer.valueOf(3));
          elements.add((E) "four");
          assertThrows(IllegalArgumentException.class, () -> set.addAll(elements),
                  "Integer should fail string predicate.");
          assertFalse(set.contains("one"), "Set shouldn't contain illegal element");
          assertFalse(set.contains("two"), "Set shouldn't contain illegal element");
          assertFalse(set.contains(Integer.valueOf(3)), "Set shouldn't contain illegal element");
         assertFalse(set.contains("four"), "Set shouldn't contain illegal element");
     }
 
 //    public void testCreate() throws Exception {
 //        resetEmpty();
 //        writeExternalFormToDisk((java.io.Serializable) getCollection(), "src/test/resources/data/test/PredicatedSet.emptyCollection.version4.obj");
 //        resetFull();
 //        writeExternalFormToDisk((java.io.Serializable) getCollection(), "src/test/resources/data/test/PredicatedSet.fullCollection.version4.obj");
 //    }
 
 }