/*

 * Copyright 2014 Google, Inc.  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 8062194

 * @summary Ensure Attribute iteration order is the insertion order.

 */

import java.util.Arrays;

import java.util.Map;

import java.util.jar.Attributes;

import java.util.jar.Attributes.Name;

public class IterationOrder {

    static void checkOrder(Attributes.Name k0, String v0,

                           Attributes.Name k1, String v1,

                           Attributes.Name k2, String v2) {

        Attributes x = new Attributes();

        x.put(k0, v0);

        x.put(k1, v1);

        x.put(k2, v2);

        Map.Entry<?,?>[] entries

            = x.entrySet().toArray(new Map.Entry<?,?>[3]);

        if (!(entries.length == 3

              && entries[0].getKey() == k0

              && entries[0].getValue() == v0

              && entries[1].getKey() == k1

              && entries[1].getValue() == v1

              && entries[2].getKey() == k2

              && entries[2].getValue() == v2)) {

            throw new AssertionError(Arrays.toString(entries));

        }

        Object[] keys = x.keySet().toArray();

        if (!(keys.length == 3

              && keys[0] == k0

              && keys[1] == k1

              && keys[2] == k2)) {

             throw new AssertionError(Arrays.toString(keys));

        }

    }

    public static void main(String[] args) throws Exception {

        Attributes.Name k0 = Name.MANIFEST_VERSION;

        Attributes.Name k1 = Name.MAIN_CLASS;

        Attributes.Name k2 = Name.SEALED;

        String v0 = "42.0";

        String v1 = "com.google.Hello";

        String v2 = "yes";

        checkOrder(k0, v0, k1, v1, k2, v2);

        checkOrder(k1, v1, k0, v0, k2, v2);

        checkOrder(k2, v2, k1, v1, k0, v0);

    }

}