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.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.BinaryFunction;
25  import org.apache.commons.functor.BinaryProcedure;
26  import org.apache.commons.functor.core.Constant;
27  import org.apache.commons.functor.core.NoOp;
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 TestBinaryFunctionBinaryProcedure extends BaseFunctorTest {
35  
36      // Functor Testing Framework
37      // ------------------------------------------------------------------------
38  
39      protected Object makeFunctor() {
40          return new BinaryFunctionBinaryProcedure<Object, Object>(Constant.of("K"));
41      }
42  
43      // Tests
44      // ------------------------------------------------------------------------
45  
46      @Test
47      public void testRun() throws Exception {
48          class EvaluateCounter implements BinaryFunction<Object, Object, Integer> {
49              int count = 0;
50              public Integer evaluate(Object a, Object b) { return new Integer(count++); }
51          }
52          EvaluateCounter counter = new EvaluateCounter();
53          BinaryProcedure<Object, Object> p = new BinaryFunctionBinaryProcedure<Object, Object>(counter);
54          assertEquals(0,counter.count);
55          p.run(null,null);
56          assertEquals(1,counter.count);
57          p.run("x","y");
58          assertEquals(2,counter.count);
59      }
60  
61      @Test
62      public void testEquals() throws Exception {
63          BinaryProcedure<Object, Object> p = new BinaryFunctionBinaryProcedure<Object, Object>(Constant.of("K"));
64          assertEquals(p,p);
65          assertObjectsAreEqual(p,new BinaryFunctionBinaryProcedure<Object, Object>(Constant.of("K")));
66          assertObjectsAreNotEqual(p,new NoOp());
67          assertObjectsAreNotEqual(p,new BinaryFunctionBinaryProcedure<Object, Object>(Constant.of("J")));
68      }
69  
70      @Test
71      public void testAdaptNull() throws Exception {
72          assertNull(BinaryFunctionBinaryProcedure.adapt(null));
73      }
74  
75      @Test
76      public void testAdapt() throws Exception {
77          assertNotNull(BinaryFunctionBinaryProcedure.adapt(Constant.of("K")));
78      }
79  }