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Java > Open Source Codes > com > db4o > db4ounit > common > foundation > Stack4TestCase


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 public class Stack4TestCase implements TestCase {
29
30     public static void main(String JavaDoc[] args) {
31         new TestRunner(Stack4TestCase.class).run();
32     }
33     
34     public void testPushPop(){
35         final Stack4 stack = new Stack4();
36         assertEmpty(stack);
37         stack.push("a");
38         stack.push("b");
39         stack.push("c");
40         Assert.isFalse(stack.isEmpty());
41         Assert.areEqual("c", stack.peek());
42         Assert.areEqual("c", stack.peek());
43         Assert.areEqual("c", stack.pop());
44         Assert.areEqual("b", stack.pop());
45         Assert.areEqual("a", stack.peek());
46         Assert.areEqual("a", stack.pop());
47         assertEmpty(stack);
48     }
49
50     private void assertEmpty(final Stack4 stack) {
51         Assert.isTrue(stack.isEmpty());
52         Assert.isNull(stack.peek());
53         Assert.expect(IllegalStateException JavaDoc.class, new CodeBlock() {
54             public void run() throws Exception JavaDoc {
55                 stack.pop();
56             }
57         });
58     }
59
60 }
61
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