TestUnmodifiableIterator


1   /*
2    *  Copyright 2001-2004 The Apache Software Foundation
3    *
4    *  Licensed under the Apache License, Version 2.0 (the "License");
5    *  you may not use this file except in compliance with the License.
6    *  You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   *  Unless required by applicable law or agreed to in writing, software
11   *  distributed under the License is distributed on an "AS IS" BASIS,
12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *  See the License for the specific language governing permissions and
14   *  limitations under the License.
15   */
16  package org.apache.commons.collections.iterators;
17  
18  import java.util.ArrayList  ;
19  import java.util.Arrays  ;
20  import java.util.Collections  ;
21  import java.util.Iterator  ;
22  import java.util.List  ;
23  
24  import junit.framework.Test;
25  import junit.framework.TestSuite;
26  
27  import org.apache.commons.collections.Unmodifiable;
28  
29  /**
30   * Tests the UnmodifiableIterator.
31   * 
32   * @version $Revision: 1.3 $ $Date: 2004/02/18 01:20:33 $
33   * 
34   * @author Stephen Colebourne
35   */
36  public class TestUnmodifiableIterator extends AbstractTestIterator {
37  
38      protected String  [] testArray = { "One", "Two", "Three" };
39      protected List   testList = new ArrayList  (Arrays.asList(testArray));
40  
41      public static Test suite() {
42          return new TestSuite(TestUnmodifiableIterator.class);
43      }
44  
45      public TestUnmodifiableIterator(String   testName) {
46          super(testName);
47      }
48  
49      public Iterator   makeEmptyIterator() {
50          return UnmodifiableIterator.decorate(Collections.EMPTY_LIST.iterator());
51      }
52  
53      public Iterator   makeFullIterator() {
54          return UnmodifiableIterator.decorate(testList.iterator());
55      }
56  
57      public boolean supportsRemove() {
58          return false;
59      }
60  
61      //-----------------------------------------------------------------------
62      public void testIterator() {
63          assertTrue(makeEmptyIterator() instanceof Unmodifiable);
64      }
65      
66      public void testDecorateFactory() {
67          Iterator   it = makeFullIterator();
68          assertSame(it, UnmodifiableIterator.decorate(it));
69          
70          it = testList.iterator();
71          assertTrue(it != UnmodifiableIterator.decorate(it));
72          
73          try {
74              UnmodifiableIterator.decorate(null);
75              fail();
76          } catch (IllegalArgumentException   ex) {}
77      }
78  
79  }
80
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