/*

 * Copyright (c) 2008, 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 6196991

 * @summary Roundtrip Encoding/Decoding of just one ASCII char

 * @author Martin Buchholz

 */

import java.util.*;

import java.nio.*;

import java.nio.charset.*;

public class FindASCIICodingBugs {

    private static int failures = 0;

    private static void check(boolean condition) {

        if (! condition) {

            new Error("test failed").printStackTrace();

            failures++;

        }

    }

    private static boolean equals(byte[] ba, ByteBuffer bb) {

        if (ba.length != bb.limit())

            return false;

        for (int i = 0; i < ba.length; i++)

            if (ba[i] != bb.get(i))

                return false;

        return true;

    }

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

        for (Map.Entry<String,Charset> e

                 : Charset.availableCharsets().entrySet()) {

            String csn = e.getKey();

            Charset cs = e.getValue();

            // Delete the following lines when these charsets are fixed!

            if (csn.equals("x-JIS0208"))      continue; // MalformedInput

            if (csn.equals("JIS_X0212-1990")) continue; // MalformedInput

            if (! cs.canEncode()) continue;

            CharsetEncoder enc = cs.newEncoder();

            CharsetDecoder dec = cs.newDecoder();

            if (! enc.canEncode('A')) continue;

            System.out.println(csn);

            try {

                byte[] bytes1 = "A".getBytes(csn);

                ByteBuffer bb = enc.encode(CharBuffer.wrap(new char[]{'A'}));

                check(equals(bytes1, bb));

                check(new String(bytes1, csn).equals("A"));

                CharBuffer cb = dec.decode(bb);

                check(cb.toString().equals("A"));

            } catch (Throwable t) {

                t.printStackTrace();

                failures++;

            }

        }

        if (failures > 0)

            throw new Exception(failures + "tests failed");

    }

}