TestMethodIterator


1   // Copyright 2004, 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.hivemind.impl;
16  
17  import java.io.IOException  ;
18  import java.util.NoSuchElementException  ;
19  
20  import org.apache.hivemind.service.MethodIterator;
21  import org.apache.hivemind.service.MethodSignature;
22  import org.apache.hivemind.test.HiveMindTestCase;
23  
24  /**
25   * Tests for {@link org.apache.hivemind.service.MethodIterator}.
26   * 
27   * @author Howard Lewis Ship
28   * @since 1.0
29   */
30  public class TestMethodIterator extends HiveMindTestCase
31  {
32      static interface Play extends Runnable  
33      {
34          public void jump();
35      }
36  
37      static interface Runnable2
38      {
39          public void run();
40      }
41  
42      static interface Runnable3 extends Runnable  , Runnable2
43      {
44      }
45  
46      static interface ToString
47      {
48          public String   toString();
49      }
50  
51      /** @since 1.1 */
52      static interface Openable
53      {
54          public void open();
55      }
56  
57      /** @since 1.1 */
58      static interface OpenableWithError
59      {
60          public void open() throws IOException  ;
61      }
62  
63      /** @since 1.1 */
64      static interface CombinedOpeneable extends Openable, OpenableWithError
65      {
66      }
67  
68      public void testNormal()
69      {
70          MethodIterator mi = new MethodIterator(Runnable  .class);
71  
72          assertTrue(mi.hasNext());
73  
74          MethodSignature actual = mi.next();
75  
76          assertEquals(new MethodSignature(void.class, "run", null, null), actual);
77  
78          assertFalse(mi.hasNext());
79  
80          try
81          {
82              mi.next();
83          }
84          catch (NoSuchElementException   ex)
85          {
86              //
87          }
88  
89          assertEquals(false, mi.getToString());
90      }
91  
92      public void testInherited()
93      {
94          MethodIterator mi = new MethodIterator(Play.class);
95  
96          assertTrue(mi.hasNext());
97  
98          // Problematic because the order in which they are returned is
99          // JDK specific and not defined!
100 
101         MethodSignature actual = mi.next();
102 
103         assertEquals(new MethodSignature(void.class, "jump", null, null), actual);
104 
105         assertTrue(mi.hasNext());
106 
107         actual = mi.next();
108 
109         assertEquals(new MethodSignature(void.class, "run", null, null), actual);
110 
111         assertFalse(mi.hasNext());
112 
113         assertEquals(false, mi.getToString());
114     }
115 
116     public void testFiltersFuplication()
117     {
118         MethodIterator mi = new MethodIterator(Runnable3.class);
119 
120         MethodSignature actual = mi.next();
121 
122         assertEquals(new MethodSignature(void.class, "run", null, null), actual);
123 
124         assertEquals(false, mi.getToString());
125     }
126 
127     public void testToString()
128     {
129         MethodIterator mi = new MethodIterator(ToString.class);
130 
131         MethodSignature actual = mi.next();
132 
133         assertEquals(new MethodSignature(String  .class, "toString", null, null), actual);
134 
135         assertEquals(true, mi.getToString());
136     }
137 
138     /** @since 1.1 */
139     public void testFilterInheritedMethods()
140     {
141         MethodIterator mi = new MethodIterator(CombinedOpeneable.class);
142 
143         MethodSignature actual = mi.next();
144 
145         assertEquals(new MethodSignature(void.class, "open", null, new Class  []
146         { IOException  .class }), actual);
147 
148         assertEquals(false, mi.hasNext());
149     }
150 }
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