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.core.composite;
18  
19  import static org.junit.Assert.assertEquals;
20  import static org.junit.Assert.assertNotNull;
21  import static org.junit.Assert.assertNull;
22  
23  import org.apache.commons.functor.BaseFunctorTest;
24  import org.apache.commons.functor.BinaryPredicate;
25  import org.apache.commons.functor.adapter.BinaryFunctionBinaryPredicate;
26  import org.apache.commons.functor.core.Constant;
27  import org.apache.commons.functor.core.LeftIdentity;
28  import org.junit.Test;
29  
30  /**
31   * @version $Revision: 1171255 $ $Date: 2011-09-15 22:27:39 +0200 (Thu, 15 Sep 2011) $
32   * @author Rodney Waldhoff
33   */
34  public class TestTransposedPredicate extends BaseFunctorTest {
35  
36      // Functor Testing Framework
37      // ------------------------------------------------------------------------
38  
39      protected Object makeFunctor() {
40          return new TransposedPredicate<Object, Object>(Constant.TRUE);
41      }
42  
43      // Tests
44      // ------------------------------------------------------------------------
45  
46      @Test
47      public void testEvaluate() throws Exception {
48          BinaryPredicate<Boolean, Boolean> p = new TransposedPredicate<Boolean, Boolean>(BinaryFunctionBinaryPredicate
49                  .adapt(LeftIdentity.<Boolean, Boolean> function()));
50          assertEquals(true,p.test(Boolean.FALSE,Boolean.TRUE));
51          assertEquals(false,p.test(Boolean.TRUE,Boolean.FALSE));
52      }
53  
54      @Test
55      public void testEquals() throws Exception {
56          BinaryPredicate<Object, Object> p = new TransposedPredicate<Object, Object>(Constant.TRUE);
57          assertEquals(p,p);
58          assertObjectsAreEqual(p,new TransposedPredicate<Object, Object>(Constant.TRUE));
59          assertObjectsAreEqual(p,TransposedPredicate.transpose(Constant.TRUE));
60          assertObjectsAreNotEqual(p,new TransposedPredicate<Object, Object>(Constant.FALSE));
61          assertObjectsAreNotEqual(p,Constant.TRUE);
62      }
63  
64      @Test
65      public void testTransposeNull() throws Exception {
66          assertNull(TransposedPredicate.transpose(null));
67      }
68  
69      @Test
70      public void testTranspose() throws Exception {
71          assertNotNull(TransposedPredicate.transpose(Constant.TRUE));
72      }
73  }