/*

 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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.

 *

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 */

/* @test

   @bug 4890726

   @summary Check the correctness of KOI8_U by comparing to KOI8_R

 */

import java.util.*;

import static java.lang.Character.UnicodeBlock;

public class UkrainianIsNotRussian {

    private static String decode(byte[] bytes, String encoding) throws Throwable {

        String s = new String(bytes, encoding);

        equal(s.length(), 1);

        check(Arrays.equals(s.getBytes(encoding), bytes));

        return s;

    }

    private static void realMain(String[] args) throws Throwable {

        final byte[] bytes = new byte[1];

        int differences = 0;

        for (int i = 0; i < 0xff; i++) {

            bytes[0] = (byte) i;

            final String r = decode(bytes, "KOI8_R");

            final String u = decode(bytes, "KOI8_U");

            if (! r.equals(u)) {

                differences++;

                final char rc = r.charAt(0);

                final char uc = u.charAt(0);

                final UnicodeBlock rcb = UnicodeBlock.of(rc);

                final UnicodeBlock ucb = UnicodeBlock.of(uc);

                System.out.printf("%02x => %04x %s, %04x %s%n",

                                  i, (int) rc, rcb, (int) uc, ucb);

                check(rcb == UnicodeBlock.BOX_DRAWING &&

                      ucb == UnicodeBlock.CYRILLIC);

            }

        }

        equal(differences, 8);

    }

    //--------------------- Infrastructure ---------------------------

    static volatile int passed = 0, failed = 0;

    static void pass() {passed++;}

    static void fail() {failed++; Thread.dumpStack();}

    static void fail(String msg) {System.out.println(msg); fail();}

    static void unexpected(Throwable t) {failed++; t.printStackTrace();}

    static void check(boolean cond) {if (cond) pass(); else fail();}

    static void equal(Object x, Object y) {

        if (x == null ? y == null : x.equals(y)) pass();

        else fail(x + " not equal to " + y);}

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

        try {realMain(args);} catch (Throwable t) {unexpected(t);}

        System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);

        if (failed > 0) throw new AssertionError("Some tests failed");}

}