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.fail;
21  
22  import org.apache.commons.functor.BaseFunctorTest;
23  import org.apache.commons.functor.core.Constant;
24  import org.apache.commons.functor.core.Identity;
25  import org.apache.commons.functor.core.NoOp;
26  
27  /**
28   * @version $Revision: 1171255 $ $Date: 2011-09-15 22:27:39 +0200 (Thu, 15 Sep 2011) $
29   * @author Rodney Waldhoff
30   */
31  public class TestCompositeUnaryProcedure extends BaseFunctorTest {
32  
33      // Functor Testing Framework
34      // ------------------------------------------------------------------------
35  
36      protected Object makeFunctor() {
37          return Composite.procedure(NoOp.instance(), Constant.TRUE);
38      }
39  
40      // Tests
41      // ------------------------------------------------------------------------
42  
43      public void testRun() throws Exception {
44          Composite.procedure(NoOp.instance(), Identity.instance()).run(null);
45      }
46  
47      @SuppressWarnings("unchecked")
48      public void testNullNotAllowed() throws Exception {
49          try {
50              new CompositeUnaryProcedure(null);
51              fail("Expected IllegalArgumentException");
52          } catch(IllegalArgumentException e) {
53              // expected
54          }
55          try {
56              new CompositeUnaryProcedure<Object>(NoOp.instance()).of(null);
57              fail("Expected IllegalArgumentException");
58          } catch(IllegalArgumentException e) {
59              // expected
60          }
61      }
62      public void testOf() throws Exception {
63          Composite.procedure(NoOp.instance()).of(Identity.instance()).run(null);
64      }
65  
66      public void testEquals() throws Exception {
67          CompositeUnaryProcedure<Object> f = Composite.procedure(NoOp.instance());
68          assertEquals(f,f);
69          CompositeUnaryProcedure<Object> g = Composite.procedure(NoOp.instance());
70          assertObjectsAreEqual(f,g);
71  
72          for (int i=0;i<3;i++) {
73              f = f.of(Constant.of("x"));
74              assertObjectsAreNotEqual(f,g);
75              g = g.of(Constant.of("x"));
76              assertObjectsAreEqual(f,g);
77              f = f.of(Constant.of("y")).of(Constant.of("z"));
78              assertObjectsAreNotEqual(f,g);
79              g = g.of(Constant.of("y")).of(Constant.of("z"));
80              assertObjectsAreEqual(f,g);
81          }
82  
83          assertObjectsAreNotEqual(f,Constant.FALSE);
84      }
85  
86  }