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;
18  
19  import static org.junit.Assert.assertTrue;
20  import static org.junit.Assert.fail;
21  
22  import org.apache.commons.functor.BaseFunctorTest;
23  import org.apache.commons.functor.BinaryPredicate;
24  import org.apache.commons.functor.Predicate;
25  import org.apache.commons.functor.UnaryPredicate;
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 TestLimit extends BaseFunctorTest {
33  
34  
35      // Functor Testing Framework
36      // ------------------------------------------------------------------------
37  
38      protected Object makeFunctor() {
39          return new Limit(3);
40      }
41  
42      // Tests
43      // ------------------------------------------------------------------------
44  
45      @Test
46      public void testZero() throws Exception {
47          Predicate p = new Limit(0);
48          assertTrue(! p.test());
49          assertTrue(! p.test());
50          assertTrue(! p.test());
51      }
52  
53      @Test
54      public void testBadArgs() throws Exception {
55          try {
56              new Limit(-1);
57              fail("Expected IllegalArgumentException");
58          } catch(IllegalArgumentException e) {
59              // expected
60          }
61      }
62  
63      @Test
64      public void testTestNullary() throws Exception {
65          Predicate p = new Limit(3);
66          assertTrue(p.test());
67          assertTrue(p.test());
68          assertTrue(p.test());
69          assertTrue(! p.test());
70      }
71  
72      @Test
73      public void testTestUnary() throws Exception {
74          UnaryPredicate<Object> p = new Limit(3);
75          assertTrue(p.test(null));
76          assertTrue(p.test(null));
77          assertTrue(p.test(null));
78          assertTrue(! p.test(null));
79      }
80  
81      @Test
82      public void testTestBinary() throws Exception {
83          BinaryPredicate<Object, Object> p = new Limit(3);
84          assertTrue(p.test(null,null));
85          assertTrue(p.test(null,null));
86          assertTrue(p.test(null,null));
87          assertTrue(! p.test(null,null));
88      }
89  }