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.UnaryFunction;
25  import org.apache.commons.functor.core.Constant;
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 Rodney Waldhoff
31   */
32  public class TestFunctionUnaryFunction extends BaseFunctorTest {
33  
34      // Functor Testing Framework
35      // ------------------------------------------------------------------------
36  
37      protected Object makeFunctor() {
38          return new FunctionUnaryFunction<Object, Object>(Constant.of("xyzzy"));
39      }
40  
41      // Tests
42      // ------------------------------------------------------------------------
43  
44      @Test
45      public void testEvaluate() throws Exception {
46          UnaryFunction<Object, Object> f = new FunctionUnaryFunction<Object, Object>(Constant.of("xyzzy"));
47          assertEquals("xyzzy",f.evaluate(null));
48          assertEquals("xyzzy",f.evaluate("abc"));
49      }
50  
51      @Test
52      public void testEquals() throws Exception {
53          UnaryFunction<Object, Object> f = new FunctionUnaryFunction<Object, Object>(Constant.of("xyzzy"));
54          assertEquals(f,f);
55          assertObjectsAreEqual(f,new FunctionUnaryFunction<Object, Object>(Constant.of("xyzzy")));
56          assertObjectsAreNotEqual(f,Constant.of("x"));
57          assertObjectsAreNotEqual(f,new FunctionUnaryFunction<Object, Object>(Constant.of(null)));
58          assertObjectsAreNotEqual(f,Constant.of(null));
59      }
60  
61      @Test
62      public void testAdaptNull() throws Exception {
63          assertNull(FunctionUnaryFunction.adapt(null));
64      }
65  
66      @Test
67      public void testAdapt() throws Exception {
68          assertNotNull(FunctionUnaryFunction.adapt(Constant.of("xyzzy")));
69      }
70  }