bug6938813.java revision 12278:6fb5ee377870 
1/*
2 * Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 * @test
26 * @bug 6938813
27 * @summary Swing mutable statics
28 * @author Pavel Porvatov
29 * @modules java.desktop/sun.awt
30 */
31
32import sun.awt.AppContext;
33import sun.awt.SunToolkit;
34
35import javax.swing.text.html.HTMLEditorKit;
36import javax.swing.text.html.StyleSheet;
37import javax.swing.text.html.parser.DTD;
38import javax.swing.text.html.parser.ParserDelegator;
39import java.lang.reflect.Field;
40
41public class bug6938813 {
42    public static final String DTD_KEY = "dtd_key";
43
44    private static volatile StyleSheet styleSheet;
45
46    public static void main(String[] args) throws Exception {
47        // Run validation and init values for this AppContext
48        validate();
49
50        Thread thread = new ThreadInAnotherAppContext();
51
52        thread.start();
53        thread.join();
54    }
55
56    private static void validate() throws Exception {
57        AppContext appContext = AppContext.getAppContext();
58
59        assertTrue(DTD.getDTD(DTD_KEY).getName().equals(DTD_KEY), "DTD.getDTD() mixed AppContexts");
60
61        // Spoil hash value
62        DTD invalidDtd = DTD.getDTD("invalid DTD");
63
64        DTD.putDTDHash(DTD_KEY, invalidDtd);
65
66        assertTrue(DTD.getDTD(DTD_KEY) == invalidDtd, "Something wrong with DTD.getDTD()");
67
68        Object dtdKey = getParserDelegator_DTD_KEY();
69
70        assertTrue(appContext.get(dtdKey) == null, "ParserDelegator mixed AppContexts");
71
72        // Init default DTD
73        new ParserDelegator();
74
75        Object dtdValue = appContext.get(dtdKey);
76
77        assertTrue(dtdValue != null, "ParserDelegator.defaultDTD isn't initialized");
78
79        // Try reinit default DTD
80        new ParserDelegator();
81
82        assertTrue(dtdValue == appContext.get(dtdKey), "ParserDelegator.defaultDTD created a duplicate");
83
84        HTMLEditorKit htmlEditorKit = new HTMLEditorKit();
85
86        if (styleSheet == null) {
87            // First AppContext
88            styleSheet = htmlEditorKit.getStyleSheet();
89
90            assertTrue(styleSheet != null, "htmlEditorKit.getStyleSheet() returns null");
91            assertTrue(htmlEditorKit.getStyleSheet() == styleSheet, "Something wrong with htmlEditorKit.getStyleSheet()");
92        } else {
93            assertTrue(htmlEditorKit.getStyleSheet() != styleSheet, "HtmlEditorKit.getStyleSheet() mixed AppContexts");
94        }
95    }
96
97    private static void assertTrue(boolean b, String msg) {
98        if (!b) {
99            throw new RuntimeException("Test failed: " + msg);
100        }
101    }
102
103    private static Object getParserDelegator_DTD_KEY() throws Exception {
104        Field field = ParserDelegator.class.getDeclaredField("DTD_KEY");
105
106        field.setAccessible(true);
107
108        return field.get(null);
109    }
110
111    private static class ThreadInAnotherAppContext extends Thread {
112        public ThreadInAnotherAppContext() {
113            super(new ThreadGroup("6938813"), "ThreadInAnotherAppContext");
114        }
115
116        public void run() {
117            SunToolkit.createNewAppContext();
118
119            try {
120                validate();
121            } catch (Exception e) {
122                throw new RuntimeException(e);
123            }
124        }
125    }
126}
127