Mercurial > hg > truffle
comparison test/runtime/interned/SanityTest.java @ 8850:ede380e13960
8009763: Add WB test for String.intern()
Summary: Add convenience method in StringTable, add WhiteBox method and simple sanity test
Reviewed-by: mgerdin, zgu
Contributed-by: leonid.mesnik@oracle.com
author | mgerdin |
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date | Tue, 02 Apr 2013 11:28:33 +0200 |
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8849:e458120c6e1a | 8850:ede380e13960 |
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1 /* | |
2 * Copyright (c) 2013, 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 SanityTest | |
26 * @summary Sanity check of String.intern() & GC | |
27 * @library /testlibrary /testlibrary/whitebox | |
28 * @build SanityTest | |
29 * @run main ClassFileInstaller sun.hotspot.WhiteBox | |
30 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI SanityTest | |
31 */ | |
32 | |
33 import java.util.*; | |
34 import sun.hotspot.WhiteBox; | |
35 | |
36 | |
37 public class SanityTest { | |
38 public static Object tmp; | |
39 public static void main(String... args) { | |
40 | |
41 WhiteBox wb = WhiteBox.getWhiteBox(); | |
42 StringBuilder sb = new StringBuilder(); | |
43 sb.append("1234x"); sb.append("x56789"); | |
44 String str = sb.toString(); | |
45 | |
46 if (wb.isInStringTable(str)) { | |
47 throw new RuntimeException("String " + str + " is already interned"); | |
48 } | |
49 str.intern(); | |
50 if (!wb.isInStringTable(str)) { | |
51 throw new RuntimeException("String " + str + " is not interned"); | |
52 } | |
53 str = sb.toString(); | |
54 wb.fullGC(); | |
55 if (wb.isInStringTable(str)) { | |
56 throw new RuntimeException("String " + str + " is in StringTable even after GC"); | |
57 } | |
58 } | |
59 } |