1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.functor.adapter;
18  
19  import static org.junit.Assert.*;
20  
21  import org.apache.commons.functor.BaseFunctorTest;
22  import org.apache.commons.functor.UnaryFunction;
23  import org.apache.commons.functor.core.Constant;
24  import org.apache.commons.functor.core.IsNotSame;
25  import org.apache.commons.functor.core.IsSame;
26  import org.junit.Test;
27  
28  /**
29   * @version $Revision: 1171255 $ $Date: 2011-09-15 22:27:39 +0200 (Thu, 15 Sep 2011) $
30   * @author Matt Benson
31   */
32  public class TestBinaryFunctionUnaryFunction extends BaseFunctorTest {
33  
34      // Functor Testing Framework
35      // ------------------------------------------------------------------------
36  
37      protected Object makeFunctor() {
38          return new BinaryFunctionUnaryFunction<Object, Object>(BinaryPredicateBinaryFunction.adapt(IsSame.INSTANCE));
39      }
40  
41      // Tests
42      // ------------------------------------------------------------------------
43  
44      @Test
45      public void testTestWhenTrue() throws Exception {
46          UnaryFunction<Object, Boolean> f = new BinaryFunctionUnaryFunction<Object, Boolean>(BinaryPredicateBinaryFunction.adapt(IsSame.INSTANCE));
47          assertTrue(f.evaluate(null));
48      }
49  
50      @Test
51      public void testTestWhenFalse() throws Exception {
52          UnaryFunction<Object, Boolean> f = new BinaryFunctionUnaryFunction<Object, Boolean>(BinaryPredicateBinaryFunction.adapt(IsNotSame.INSTANCE));
53          assertFalse(f.evaluate(null));
54      }
55  
56      @Test
57      public void testEquals() throws Exception {
58          UnaryFunction<Object, Boolean> f = new BinaryFunctionUnaryFunction<Object, Boolean>(BinaryPredicateBinaryFunction.adapt(IsSame.INSTANCE));
59          assertEquals(f, f);
60          assertObjectsAreEqual(f, new BinaryFunctionUnaryFunction<Object, Boolean>(BinaryPredicateBinaryFunction.adapt(IsSame.INSTANCE)));
61          assertObjectsAreNotEqual(f, Constant.truePredicate());
62          assertObjectsAreNotEqual(f, new BinaryFunctionUnaryFunction<Object, Boolean>(BinaryPredicateBinaryFunction.adapt(IsNotSame.INSTANCE)));
63      }
64  
65      @Test
66      public void testAdaptNull() throws Exception {
67          assertNull(BinaryFunctionUnaryFunction.adapt(null));
68      }
69  
70      @Test
71      public void testAdapt() throws Exception {
72          assertNotNull(BinaryFunctionUnaryFunction.adapt(Constant.TRUE));
73      }
74  }