/*

 * Copyright (c) 2015, 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 8030179

   @summary test if the charset encoder deails with surrogate correctly

 * @run testng/othervm -esa StreamEncoderOut

 */

import org.testng.annotations.DataProvider;

import org.testng.annotations.Test;

import java.io.IOException;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.nio.charset.Charset;

import java.util.stream.Stream;

import static java.util.stream.Collectors.joining;

@Test

public class StreamEncoderOut {

    enum Input {

        HIGH("\ud834"),

        LOW("\udd1e"),

        HIGH_LOW("\ud834\udd1e");

        final String value;

        Input(String value) {

            this.value = value;

        }

        @Override

        public String toString() {

            return name() + " : \'" + value + "\"";

        }

    }

    @DataProvider(name = "CharsetAndString")

    // [Charset, Input]

    public static Object[][] makeStreamTestData() {

        // Cross product of supported charsets and inputs

        return Charset.availableCharsets().values().stream().

                filter(Charset::canEncode).

                flatMap(cs -> Stream.of(Input.values()).map(i -> new Object[]{cs, i})).

                toArray(Object[][]::new);

    }

    private static String generate(String s, int n) {

        return Stream.generate(() -> s).limit(n).collect(joining());

    }

    static final OutputStream DEV_NULL = new OutputStream() {

        @Override

        public void write(byte b[], int off, int len) throws IOException {}

        @Override

        public void write(int b) throws IOException {}

    };

    @Test(dataProvider = "CharsetAndString")

    public void test(Charset cs, Input input) throws IOException {

        OutputStreamWriter w = new OutputStreamWriter(DEV_NULL, cs);

        String t = generate(input.value, 8193);

        for (int i = 0; i < 10; i++) {

            w.append(t);

        }

    }

}