/*

 * Copyright (c) 2018, 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 4153987 6354525

 * @summary Malformed surrogates should be handled by the converter in

 * substitution mode.

 */

import java.io.ByteArrayOutputStream;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

public class MalformedSurrogateStringTest {

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

        String fe = System.getProperty("file.encoding");

        if (  fe.equalsIgnoreCase("UTF8")

              || fe.equalsIgnoreCase("UTF-8")

              || fe.equalsIgnoreCase("UTF_8"))

            // This test is meaningless if the default charset

            // does handle surrogates

            return;

        System.out.println("Testing string conversion...");

        /* Example with malformed surrogate, and an offset */

        String t = "abc\uD800\uDB00efgh";

        String t2 = t.substring(2);

        byte[] b = t2.getBytes();

        System.err.println(b.length);

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

            System.err.println("[" + i + "]" + "=" + (char) b[i]

                               + "=" + (int) b[i]);

        if (b.length != 7) {

            throw new Exception("Bad string conversion for bad surrogate");

        }

        /* Example with a proper surrogate, no offset. Always worked */

        String t3 = "abc\uD800\uDC00efgh";

        byte[] b2 = t3.getBytes();

        System.out.println(b2.length);

        for(int i = 0; i < b2.length; i++)

            System.err.println("[" + i + "]" + "=" + (char) b2[i]);

        if (b2.length != 8) {

            throw new Exception("Bad string conversion for good surrogate");

        }

        OutputStream os = new ByteArrayOutputStream();

        OutputStreamWriter osw = new OutputStreamWriter(os);

        System.out.println("Testing flush....");

        /* Check for the case where the converter has a left over

           high surrogate when flush is called on the converter */

        osw.flush();

        String s = "abc\uD800"; // High surrogate

        char[] c = s.toCharArray();

        osw.write(s, 0, 4);

        osw.flush();

        System.out.println("Testing convert...");

        /* Verify that all other characters go through */

        for (int k = 1; k < 65535 ; k++) {

            osw.write("Char[" + k + "]=\"" + ((char) k) + "\"");

        }

    }

}