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Java > Open Source Codes > com > db4o > db4ounit > common > btree > BTreeFreeTestCase


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.btree;
22
23 import com.db4o.*;
24 import com.db4o.foundation.*;
25 import com.db4o.inside.slots.*;
26
27 import db4ounit.*;
28
29
30 public class BTreeFreeTestCase extends BTreeTestCaseBase {
31
32     private static final int[] VALUES = new int[] { 1, 2, 5, 7, 8, 9, 12 };
33
34     public static void main(String JavaDoc[] args) {
35         new BTreeFreeTestCase().runSolo();
36     }
37     
38     public void test(){
39         
40         add(VALUES);
41         
42         Iterator4 allSlotIDs = _btree.allNodeIds(systemTrans());
43         
44         Collection4 allSlots = new Collection4();
45         
46         while(allSlotIDs.moveNext()){
47             Integer JavaDoc slotID = (Integer JavaDoc)allSlotIDs.current();
48             Slot slot = fileTransaction().getCurrentSlotOfID(slotID.intValue());
49             allSlots.add(slot);
50         }
51         
52         YapFile yapFile = (YapFile)stream();
53         
54         
55         final Collection4 freedSlots = new Collection4();
56         
57         yapFile.installDebugFreespaceManager(
58             new FreespaceManagerForDebug(yapFile, new SlotListener() {
59                 public void onFree(Slot slot) {
60                     freedSlots.add(slot);
61                 }
62         }));
63         
64         _btree.free(systemTrans());
65         
66         systemTrans().commit();
67         
68         Assert.isTrue(freedSlots.containsAll(allSlots.iterator()));
69         
70     }
71
72     private YapFileTransaction fileTransaction() {
73         return ((YapFileTransaction)trans());
74     }
75
76 }
77
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