1 /* ====================================================================
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 2000 The Apache Software Foundation. All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>;.
53 *
54 * Portions of this software are based upon public domain software
55 * originally written at the National Center for Supercomputing Applications,
56 * University of Illinois, Urbana-Champaign.
57 */
58
59 package net.sourceforge.jane.jjtree;
60
61 import java.util.Enumeration;
62 import java.util.NoSuchElementException;
63 import junit.framework.TestCase;
64 import org.apache.commons.collections.Predicate;
65
66 /***
67 * Tests {@link TokenEnumeration}.
68 *
69 * @author Calvin Yu
70 */
71 public class TokenEnumerationTest extends TestCase
72 {
73
74 /***
75 * Create a new <code>TokenEnumerationTest</code>.
76 */
77 public TokenEnumerationTest(String name)
78 {
79 super(name);
80 }
81
82 /***
83 * Tests the enumeration.
84 */
85 public void testEnumeration()
86 {
87 Token token1 = new Token();
88 token1.image = "token1";
89
90 Token token2 = new Token();
91 token2.image = "token2";
92
93 Token token3 = new Token();
94 token3.image = "token3";
95
96 token1.next = token2;
97 token2.next = token3;
98
99 TokenEnumeration tokens = new TokenEnumeration(token1, token2, null);
100 assertEnumeration("1: enumeration", tokens, new Token[] {token1, token2});
101
102 tokens = new TokenEnumeration(token1, token3, null);
103 assertEnumeration("2: enumeration", tokens, new Token[] {token1, token2, token3});
104
105 tokens = new TokenEnumeration(token1, token3, new Predicate() {
106 public boolean evaluate(Object token) {
107 return ((Token) token).image.equals("token2");
108 }
109 });
110 assertEnumeration("3: enumeration", tokens, new Token[] {token2});
111 }
112
113 /***
114 * Assert the enumeration.
115 */
116 static private void assertEnumeration(String desc, Enumeration tokens,
117 Token[] expected)
118 {
119 assertNotNull(desc + " (null)", tokens);
120 for (int i=0; i<expected.length; i++) {
121 assertTrue(desc + " #" + i + "(hasMoreElements)", tokens.hasMoreElements());
122 assertEquals(desc + " #" + i + "(nextElement)", expected[i], tokens.nextElement());
123 }
124 assertTrue(desc + " (no more elements)", !tokens.hasMoreElements());
125 }
126
127 }
128
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