1 /***
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions are
4 * met :
5 *
6 * . Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 *
9 * . Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * . The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $Id: RandomIteratorTest.java,v 1.3 2005/08/26 18:09:36 mat007 Exp $
29 */
30
31 package jtge.util.random;
32
33 import java.util.NoSuchElementException;
34 import java.util.Vector;
35 import jtge.util.EasyMockTestCase;
36 import org.easymock.MockControl;
37
38 /***
39 * @author Mathieu Champlon
40 * @version $Revision: 1.3 $ $Date: 2005/08/26 18:09:36 $
41 */
42 public class RandomIteratorTest extends EasyMockTestCase
43 {
44 /***
45 * Tested object.
46 */
47 private RandomIterator iterator;
48 /***
49 * Mock objects.
50 */
51 private IRandom mockRandom;
52
53 protected void setUp()
54 {
55 mockRandom = (IRandom)createMock( IRandom.class );
56 }
57
58 public void testRandomizeNullIterator()
59 {
60 iterator = new RandomIterator( mockRandom, null );
61 assertFalse( iterator.hasNext() );
62 try
63 {
64 iterator.next();
65 }
66 catch( NoSuchElementException e )
67 {
68 return;
69 }
70 fail();
71 }
72
73 public void testRemoveThrowsUnsupportedOperationException()
74 {
75 Vector vector = new Vector();
76 iterator = new RandomIterator( mockRandom, vector.iterator() );
77 try
78 {
79 iterator.remove();
80 }
81 catch( UnsupportedOperationException e )
82 {
83 return;
84 }
85 fail();
86 }
87
88 public void testRandomizeEmptyList()
89 {
90 Vector vector = new Vector();
91 iterator = new RandomIterator( mockRandom, vector.iterator() );
92 assertFalse( iterator.hasNext() );
93 try
94 {
95 iterator.next();
96 }
97 catch( NoSuchElementException e )
98 {
99 return;
100 }
101 fail();
102 }
103
104 public void testRandomizeListWithOneElement()
105 {
106 Vector vector = new Vector();
107 Object object = new Object();
108 vector.add( object );
109 mockRandom.nextInt( 0 );
110 control( mockRandom ).setMatcher( MockControl.ALWAYS_MATCHER );
111 control( mockRandom ).setReturnValue( 0 );
112 replay();
113 iterator = new RandomIterator( mockRandom, vector.iterator() );
114 assertTrue( iterator.hasNext() );
115 try
116 {
117 assertEquals( iterator.next(), object );
118 }
119 catch( NoSuchElementException e )
120 {
121 fail( e.getMessage() );
122 }
123 assertFalse( iterator.hasNext() );
124 }
125
126 public void testRandomizeListWithTwoElementsReversingThem()
127 {
128 Vector vector = new Vector();
129 Object object1 = new Object();
130 Object object2 = new Object();
131 vector.add( object1 );
132 vector.add( object2 );
133 mockRandom.nextInt( 0 );
134 control( mockRandom ).setMatcher( MockControl.ALWAYS_MATCHER );
135 control( mockRandom ).setReturnValue( 0 );
136 mockRandom.nextInt( 0 );
137 control( mockRandom ).setMatcher( MockControl.ALWAYS_MATCHER );
138 control( mockRandom ).setReturnValue( 0 );
139 replay();
140 iterator = new RandomIterator( mockRandom, vector.iterator() );
141 assertTrue( iterator.hasNext() );
142 try
143 {
144 assertEquals( iterator.next(), object2 );
145 }
146 catch( NoSuchElementException e )
147 {
148 fail( e.getMessage() );
149 }
150 assertTrue( iterator.hasNext() );
151 try
152 {
153 assertEquals( iterator.next(), object1 );
154 }
155 catch( NoSuchElementException e )
156 {
157 fail( e.getMessage() );
158 }
159 assertFalse( iterator.hasNext() );
160 }
161 }