jdk-24/hotspot/test/runtime/interned/SanityTest.java
Chris Plummer d78d0c4fa4 8140189: [TESTBUG] Get rid of "@library /../../test/lib" in jtreg tests
Use new external.lib.roots property in TEST.ROOT so /../../test/lib is not needed.

Reviewed-by: mseledtsov, sla, iklam
2015-10-29 12:04:04 -07:00

61 lines
2.2 KiB
Java

/*
* Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test SanityTest
* @summary Sanity check of String.intern() & GC
* @library /testlibrary /test/lib
* @build SanityTest
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI SanityTest
*/
import java.util.*;
import sun.hotspot.WhiteBox;
public class SanityTest {
public static Object tmp;
public static void main(String... args) {
WhiteBox wb = WhiteBox.getWhiteBox();
StringBuilder sb = new StringBuilder();
sb.append("1234x"); sb.append("x56789");
String str = sb.toString();
if (wb.isInStringTable(str)) {
throw new RuntimeException("String " + str + " is already interned");
}
str.intern();
if (!wb.isInStringTable(str)) {
throw new RuntimeException("String " + str + " is not interned");
}
str = sb.toString();
wb.fullGC();
if (wb.isInStringTable(str)) {
throw new RuntimeException("String " + str + " is in StringTable even after GC");
}
}
}