EncodingNothing.java

/*
 * Copyright (c) 2010, 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.
 *
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 */

/*
 * @test
 * @bug 6415373
 * @summary Encoding nothing should output nothing
 */

import java.io.*;
import java.nio.charset.*;

public class EncodingNothing {

    public static void main(String[] args) throws Throwable {
        int failed = 0;
        for (Charset cs : Charset.availableCharsets().values()) {
            if (! cs.canEncode())
                continue;
            System.out.printf("%s: ", cs.name());
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            OutputStreamWriter osw = new OutputStreamWriter(baos, cs);
            osw.close();
            if (baos.size() != 0) {
                System.out.printf(" Failed:  output bytes=%d", baos.size());
                failed++;
            }
            System.out.println();
        }
        if (failed != 0)
            throw new AssertionError("Some tests failed");
    }
}