87 lines
3.0 KiB
Java
87 lines
3.0 KiB
Java
/*
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* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.util.Objects;
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import java.util.Comparator;
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import sun.misc.JavaLangAccess;
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import sun.misc.SharedSecrets;
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/*
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* @test
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* @summary Test JavaLangAccess.newUnsafeString
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* @bug 8013528
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* @compile -XDignore.symbol.file NewUnsafeString.java
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*/
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public class NewUnsafeString {
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static final JavaLangAccess jla = SharedSecrets.getJavaLangAccess();
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public static void testNewUnsafeString() {
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String benchmark = "exemplar";
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String constructorCopy = new String(benchmark);
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char[] jlaChars = benchmark.toCharArray();
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String jlaCopy = jla.newStringUnsafe(jlaChars);
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if (benchmark == constructorCopy) {
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throw new Error("should be different instances");
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}
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if (!benchmark.equals(constructorCopy)) {
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throw new Error("Copy not equal");
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}
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if (0 != Objects.compare(benchmark, constructorCopy, Comparator.naturalOrder())) {
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throw new Error("Copy not equal");
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}
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if (benchmark == jlaCopy) {
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throw new Error("should be different instances");
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}
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if (!benchmark.equals(jlaCopy)) {
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throw new Error("Copy not equal");
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}
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if (0 != Objects.compare(benchmark, jlaCopy, Comparator.naturalOrder())) {
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throw new Error("Copy not equal");
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}
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if (constructorCopy == jlaCopy) {
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throw new Error("should be different instances");
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}
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if (!constructorCopy.equals(jlaCopy)) {
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throw new Error("Copy not equal");
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}
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if (0 != Objects.compare(constructorCopy, jlaCopy, Comparator.naturalOrder())) {
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throw new Error("Copy not equal");
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}
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// The following is extremely "evil". Never ever do this in non-test code.
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jlaChars[0] = 'X';
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if (!"Xxemplar".equals(jlaCopy)) {
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throw new Error("jla.newStringUnsafe did not use provided string");
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}
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}
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public static void main(String[] args) {
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testNewUnsafeString();
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}
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}
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