98 lines
3.3 KiB
Java
98 lines
3.3 KiB
Java
/*
|
|
* Copyright (c) 2021, 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
|
|
* @bug 8265237
|
|
* @summary tests StringJoiner OOME when joining sub-max-length Strings
|
|
* @modules java.base/jdk.internal.util
|
|
* @requires vm.bits == "64" & os.maxMemory > 4G
|
|
* @run testng/othervm -Xmx4g -XX:+CompactStrings StringJoinerOomUtf16Test
|
|
*/
|
|
|
|
import org.testng.annotations.Test;
|
|
|
|
import static jdk.internal.util.ArraysSupport.SOFT_MAX_ARRAY_LENGTH;
|
|
import static org.testng.Assert.fail;
|
|
|
|
import java.util.StringJoiner;
|
|
|
|
|
|
@Test(groups = {"unit","string","util","libs"})
|
|
public class StringJoinerOomUtf16Test {
|
|
|
|
// the sum of lengths of the following two strings is way less than
|
|
// SOFT_MAX_ARRAY_LENGTH, but the byte[] array holding the UTF16 representation
|
|
// would need to be bigger than Integer.MAX_VALUE...
|
|
private static final String HALF_MAX_LATIN1_STRING =
|
|
"*".repeat(SOFT_MAX_ARRAY_LENGTH >> 1);
|
|
private static final String OVERFLOW_UTF16_STRING =
|
|
"\u017D".repeat(((Integer.MAX_VALUE - SOFT_MAX_ARRAY_LENGTH) >> 1) + 1);
|
|
|
|
public void OOM1() {
|
|
try {
|
|
new StringJoiner("")
|
|
.add(HALF_MAX_LATIN1_STRING)
|
|
.add(OVERFLOW_UTF16_STRING)
|
|
.toString();
|
|
fail("Should have thrown OutOfMemoryError");
|
|
} catch (OutOfMemoryError ex) {
|
|
System.out.println("Expected: " + ex);
|
|
}
|
|
}
|
|
|
|
public void OOM2() {
|
|
try {
|
|
new StringJoiner(HALF_MAX_LATIN1_STRING)
|
|
.add("")
|
|
.add(OVERFLOW_UTF16_STRING)
|
|
.toString();
|
|
fail("Should have thrown OutOfMemoryError");
|
|
} catch (OutOfMemoryError ex) {
|
|
System.out.println("Expected: " + ex);
|
|
}
|
|
}
|
|
|
|
public void OOM3() {
|
|
try {
|
|
new StringJoiner(OVERFLOW_UTF16_STRING)
|
|
.add("")
|
|
.add(HALF_MAX_LATIN1_STRING)
|
|
.toString();
|
|
fail("Should have thrown OutOfMemoryError");
|
|
} catch (OutOfMemoryError ex) {
|
|
System.out.println("Expected: " + ex);
|
|
}
|
|
}
|
|
|
|
public void OOM4() {
|
|
try {
|
|
new StringJoiner("", HALF_MAX_LATIN1_STRING, OVERFLOW_UTF16_STRING)
|
|
.toString();
|
|
fail("Should have thrown OutOfMemoryError");
|
|
} catch (OutOfMemoryError ex) {
|
|
System.out.println("Expected: " + ex);
|
|
}
|
|
}
|
|
}
|
|
|