/*
    * 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.functor.core.comparator;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  
  import java.util.Collections;
  
  import org.apache.commons.functor.BaseFunctorTest;
  import org.apache.commons.functor.Function;
  import org.junit.Test;
  
  /**
   * @version $Revision: 1541658 $ $Date: 2013-11-13 19:54:05 +0100 (Mi, 13 Nov 2013) $
   */
  public class TestMax extends BaseFunctorTest {
  
      // Framework
      // ------------------------------------------------------------------------
  
      @Override
      protected Object makeFunctor() {
          return Max.instance();
      }
  
      private Integer MIN = Integer.valueOf(Integer.MIN_VALUE);
      private Integer MINUS_TWO = Integer.valueOf(-2);
      private Integer ZERO = Integer.valueOf(0);
      private Integer ONE = Integer.valueOf(1);
      private Integer MAX = Integer.valueOf(Integer.MAX_VALUE);
      // Tests
      // ------------------------------------------------------------------------
  
      @Test
      public void testEvaluate() {
          Max<Integer> f = Max.instance();
          assertEquals(ONE,f.evaluate(ONE,ONE));
          assertEquals(ONE,f.evaluate(ZERO,ONE));
          assertEquals(ONE,f.evaluate(ONE,ZERO));
          assertEquals(MAX,f.evaluate(ONE,MAX));
          assertEquals(MAX,f.evaluate(MIN,MAX));
          assertEquals(MINUS_TWO,f.evaluate(MIN,MINUS_TWO));
      }
  
      @Test
      public void testEquals() {
          Max<Comparable<?>> f = Max.instance();
          assertObjectsAreEqual(f,f);
          assertObjectsAreEqual(f,Max.instance());
          assertObjectsAreEqual(f,new Max<Integer>(ComparableComparator.<Integer>instance()));
          assertObjectsAreNotEqual(f,new Max<Comparable<?>>(Collections.<Comparable<?>>reverseOrder()));
          assertFalse(f.equals(null));
      }
  
      @Test
      public void testFunctionMin() {
          Function<Integer, Integer> max = Max.instance(ONE);
          assertEquals(ONE,max.evaluate(ZERO));
      }
  }