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


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 IteratorsTestCase implements TestCase {
31     
32     public void testMap() {
33         final int[] array = new int[] { 1, 2, 3 };
34         final Collection4 args = new Collection4();
35         final Iterator4 iterator = Iterators.map(
36             IntArrays4.newIterator(array),
37             new Function4() {
38                 public Object JavaDoc apply(Object JavaDoc arg) {
39                     args.add(arg);
40                     return new Integer JavaDoc(((Integer JavaDoc)arg).intValue()*2);
41                 }
42             }
43         );
44         Assert.isNotNull(iterator);
45         Assert.areEqual(0, args.size());
46         
47         for (int i=0; i<array.length; ++i) {
48             Assert.isTrue(iterator.moveNext());
49             Assert.areEqual(i+1, args.size());
50             Assert.areEqual(new Integer JavaDoc(array[i]*2), iterator.current());
51         }
52     }
53
54 }
55
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