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Java > Open Source Codes > com > db4o > db4ounit > common > foundation > Iterable4AdaptorTestCase


1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 package com.db4o.db4ounit.common.foundation;
22
23 import com.db4o.foundation.*;
24
25 import db4ounit.*;
26
27 /**
28  * @exclude
29  */
30 public class Iterable4AdaptorTestCase implements TestCase {
31     
32     public void testEmptyIterator() {
33         final Iterable4Adaptor adaptor = newAdaptor(new int[] {});
34         
35         Assert.isFalse(adaptor.hasNext());
36         Assert.isFalse(adaptor.hasNext());
37         
38         Assert.expect(IllegalStateException JavaDoc.class, new CodeBlock() {
39             public void run() throws Exception JavaDoc {
40                 adaptor.next();
41             }
42         });
43     }
44     
45     public void testHasNext() {
46         final int[] expected = new int[] { 1, 2, 3 };
47         final Iterable4Adaptor adaptor = newAdaptor(expected);
48         for (int i = 0; i < expected.length; i++) {
49             assertHasNext(adaptor);
50             Assert.areEqual(new Integer JavaDoc(expected[i]), adaptor.next());
51         }
52         Assert.isFalse(adaptor.hasNext());
53     }
54     
55     public void testNext() {
56         final int[] expected = new int[] { 1, 2, 3 };
57         final Iterable4Adaptor adaptor = newAdaptor(expected);
58         for (int i = 0; i < expected.length; i++) {
59             Assert.areEqual(new Integer JavaDoc(expected[i]), adaptor.next());
60         }
61         Assert.isFalse(adaptor.hasNext());
62     }
63     
64     private Iterable4Adaptor newAdaptor(final int[] expected) {
65         return new Iterable4Adaptor(newIterable(expected));
66     }
67
68     private void assertHasNext(final Iterable4Adaptor adaptor) {
69         for (int i=0; i<10; ++i) {
70             Assert.isTrue(adaptor.hasNext());
71         }
72     }
73
74     private Iterable4 newIterable(int[] values) {
75         final Collection4 collection = new Collection4();
76         collection.addAll(IntArrays4.toObjectArray(values));
77         return collection;
78     }
79 }
80
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