/*
    * 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.functors;
  
  import static org.apache.commons.collections4.functors.ComparatorPredicate.comparatorPredicate;
  
  import java.util.Comparator;
  
  import org.apache.commons.collections4.Predicate;
  import org.apache.commons.collections4.functors.ComparatorPredicate.Criterion;
  import org.junit.jupiter.api.Test;
  
  public class ComparatorPredicateTest extends AbstractPredicateTest {
      private static final class TestComparator<T extends Comparable<T>> implements Comparator<T> {
          @Override
          public int compare(final T first, final T second) {
              return first.compareTo(second);
          }
      }
  
      @Override
      protected Predicate<?> generatePredicate() {
          return comparatorPredicate(Integer.valueOf(10), new TestComparator<>());
      }
  
      @Test
      public void testCompareEquals() {
          final Integer value = Integer.valueOf(10);
          final Predicate<Integer> p = comparatorPredicate(value, new TestComparator<>());
          assertPredicateFalse(p, Integer.valueOf(value.intValue() - 1));
          assertPredicateTrue(p, Integer.valueOf(value.intValue()));
          assertPredicateFalse(p, Integer.valueOf(value.intValue() + 1));
      }
  
      @Test
      public void testCompareGreater() {
          final Integer value = Integer.valueOf(10);
          final Predicate<Integer> p = comparatorPredicate(value, new TestComparator<>(), Criterion.GREATER);
          assertPredicateTrue(p, Integer.valueOf(value.intValue() - 1));
          assertPredicateFalse(p, Integer.valueOf(value.intValue()));
          assertPredicateFalse(p, Integer.valueOf(value.intValue() + 1));
      }
  
      @Test
      public void testCompareGreaterOrEqual() {
          final Integer value = Integer.valueOf(10);
          final Predicate<Integer> p = comparatorPredicate(value, new TestComparator<>(), Criterion.GREATER_OR_EQUAL);
          assertPredicateTrue(p, Integer.valueOf(value.intValue() - 1));
          assertPredicateTrue(p, Integer.valueOf(value.intValue()));
          assertPredicateFalse(p, Integer.valueOf(value.intValue() + 1));
      }
  
      @Test
      public void testCompareLess() {
          final Integer value = Integer.valueOf(10);
          final Predicate<Integer> p = comparatorPredicate(value, new TestComparator<>(), Criterion.LESS);
          assertPredicateFalse(p, Integer.valueOf(value.intValue() - 1));
          assertPredicateFalse(p, Integer.valueOf(value.intValue()));
          assertPredicateTrue(p, Integer.valueOf(value.intValue() + 1));
      }
  
      @Test
      public void testCompareLessOrEqual() {
          final Integer value = Integer.valueOf(10);
          final Predicate<Integer> p = comparatorPredicate(value, new TestComparator<>(), Criterion.LESS_OR_EQUAL);
          assertPredicateFalse(p, Integer.valueOf(value.intValue() - 1));
          assertPredicateTrue(p, Integer.valueOf(value.intValue()));
          assertPredicateTrue(p, Integer.valueOf(value.intValue() + 1));
      }
  }