/*

 * Copyright (c) 2012, 2017, 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

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 * questions.

 */

import java.util.Objects;

import java.util.Comparator;

import jdk.internal.misc.JavaLangAccess;

import jdk.internal.misc.SharedSecrets;

/*

 * @test

 * @bug 8013528

 * @summary Test JavaLangAccess.newUnsafeString

 * @modules java.base/jdk.internal.misc

 * @compile -XDignore.symbol.file NewUnsafeString.java

 * @run main NewUnsafeString

 */

public class NewUnsafeString {

    static final JavaLangAccess jla = SharedSecrets.getJavaLangAccess();

    public static void testNewUnsafeString() {

        String benchmark = "exemplar";

        String constructorCopy = new String(benchmark);

        char[] jlaChars = benchmark.toCharArray();

        String jlaCopy = jla.newStringUnsafe(jlaChars);

        if (benchmark == constructorCopy) {

            throw new Error("should be different instances");

        }

        if (!benchmark.equals(constructorCopy)) {

            throw new Error("Copy not equal");

        }

        if (0 != Objects.compare(benchmark, constructorCopy, Comparator.naturalOrder())) {

            throw new Error("Copy not equal");

        }

        if (benchmark == jlaCopy) {

            throw new Error("should be different instances");

        }

        if (!benchmark.equals(jlaCopy)) {

            throw new Error("Copy not equal");

        }

        if (0 != Objects.compare(benchmark, jlaCopy, Comparator.naturalOrder())) {

            throw new Error("Copy not equal");

        }

        if (constructorCopy == jlaCopy) {

            throw new Error("should be different instances");

        }

        if (!constructorCopy.equals(jlaCopy)) {

            throw new Error("Copy not equal");

        }

        if (0 != Objects.compare(constructorCopy, jlaCopy, Comparator.naturalOrder())) {

            throw new Error("Copy not equal");

        }

        // The following is extremely "evil". Never ever do this in non-test code.

        jlaChars[0] = 'X';

        if (!"Xxemplar".equals(jlaCopy)) {

            throw new Error("jla.newStringUnsafe did not use provided string");

        }

    }

    public static void main(String[] args) {

        testNewUnsafeString();

    }

}