/*

 * 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  4181483

 *  @summary Test if InputStream methods will check if the stream

 *          has been closed.

 */

import java.io.*;

public enum OpsAfterClose {

        READ { boolean check(InputStream is) {

                    try {

                        int read = is.read();

                        System.out.println("read returns: " + read);

                    } catch (IOException io) {

                        System.out.print("Excep Msg: "+ io.getMessage() + ", ");

                        return true;

                    }

                    return false;

             } },

        READ_BUF { boolean check(InputStream is) {

                    try {

                        byte buf[] = new byte[2];

                        int read = is.read(buf);

                        System.out.println("read(buf) returns: " + read);

                    } catch (IOException io) {

                        System.out.print("Excep Msg: "+ io.getMessage() + ", ");

                        return true;

                    }

                    return false;

            } },

        READ_BUF_OFF { boolean check(InputStream is) {

                    try {

                        byte buf[] = new byte[2];

                        int len = 1;

                        int read = is.read(buf, 0, len);

                        System.out.println("read(buf, 0, len) returns: " + read);

                    } catch (IOException io) {

                        System.out.print("Excep Msg: "+ io.getMessage() + ", ");

                        return true;

                    }

                    return false;

             } },

        AVAILABLE { boolean check(InputStream is) {

                    try {

                        int avail = is.available();

                        System.out.println("available() returns: " + avail);

                        return false;

                    } catch (IOException io) {

                        System.out.print("Excep Msg: "+ io.getMessage() + ", ");

                        return true;

                    }

             } },

        SKIP { boolean check(InputStream is) {

                    try {

                        long skipped = is.skip(1);

                        System.out.println("skip() returns: " + skipped);

                    } catch (IOException io) {

                        System.out.print("Excep Msg: "+ io.getMessage() + ", ");

                        return true;

                    }

                    return false;

             } },

        MARK { boolean check(InputStream is) {

                    is.mark(20);

                    return true;

             } },

        RESET { boolean check(InputStream is) {

                    try {

                        is.reset();

                    } catch (IOException io) {

                        System.out.print("Excep Msg: "+ io.getMessage() + ", ");

                        return true;

                    }

                    return false;

             } },

        MARK_SUPPORTED { boolean check(InputStream is) {

                    is.markSupported();

                    return true;

             } },

        CLOSE { boolean check(InputStream is) {

                try {

                    is.close();

                    return true; // No Exception thrown on windows for FileInputStream

                } catch (IOException io) {

                    System.out.print("Excep Msg: "+ io.getMessage() + ", ");

                    return true; // Exception thrown on solaris and linux for FileInputStream

                }

             } };

    abstract boolean check(InputStream is);

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

        boolean failed = false;

        File f = new File(System.getProperty("test.dir", "."),

                          "f.txt");

        f.createNewFile();

        f.deleteOnExit();

        FileInputStream fis = new FileInputStream(f);

        try {

            if (testInputStream(fis)) {

                failed = true;

            }

            if (testFileInputStream(fis)) {

                failed = true;

            }

        } finally {

            fis.close();

        }

        BufferedInputStream bs =  new BufferedInputStream(

                                        new FileInputStream(f));

        try {

            if (testInputStream(bs)) {

                failed = true;

            }

        } finally {

            bs.close();

        }

        DataInputStream dis = new DataInputStream(

                                new FileInputStream(f));

        try {

            if (testInputStream(dis)) {

                failed = true;

            }

        } finally {

            dis.close();

        }

        PushbackInputStream pbis = new PushbackInputStream(

                                new ByteArrayInputStream(new byte[20]));

        if (testInputStream(pbis)) {

            failed = true;

        }

        if (testPushbackInputStream(pbis)) {

            failed = true;

        }

        PipedInputStream pis = new PipedInputStream(new PipedOutputStream());

        if (testInputStream(pis)) {

            failed = true;

        }

        /**

         * The SequenceInputStream and  ObjectInputStream does not throw IOException

        SequenceInputStream sqis = new SequenceInputStream(

                                        new FileInputStream(f),

                                        new PipedInputStream(new PipedOutputStream())

                                    );

        if (testInputStream(sqis)) {

            failed = true;

        }

        String serStr = "abc";

        ObjectOutputStream oos = new ObjectOutputStream(

                                    new FileOutputStream(f));

        oos.writeObject(serStr);

        oos.close();

        ObjectInputStream ois = new ObjectInputStream(

                                    new FileInputStream(f));

        if (testInputStream(ois)) {

            failed = true;

        }

        */

        if (failed) {

            throw new Exception(

                "Some Op for some Stream failed, check the failed status above");

        }

    }

    private static boolean testInputStream(InputStream is)

            throws Exception {

        is.close();

        boolean failed = false;

        boolean result;

        System.out.println("Testing :" + is);

        for (OpsAfterClose op : OpsAfterClose.values()) {

            if (op.equals(AVAILABLE) && (is instanceof PipedInputStream)) {

                // skip the test as available() returns 0

                continue;

            }

            result = op.check(is);

            if (!result) {

                failed = true;

            }

           System.out.println(op + ":" + result);

        }

        if (failed) {

            System.out.println("Test failed for the failed operation{s}" +

                        " above for :" + is);

        }

        return failed;

    }

    private static boolean testPushbackInputStream(PushbackInputStream pis)

                throws Exception {

        boolean failed = false;

        try {

            pis.unread(1);

            System.out.println("Test failed for unread(int):" + pis);

            failed = true;

        } catch (IOException io) {

           System.out.println("UNREAD(int):true");

        }

        byte buf[] = new byte[2];

        try {

            pis.unread(buf, 0, 2);

            System.out.println("Test failed for unread(buf, offset, len):" +

                                pis);

            failed = true;

        } catch (IOException io) {

           System.out.println("UNREAD(buf, offset, len):true");

        }

        try {

            pis.unread(buf);

            System.out.println("Test failed for unread(char[] buf):" + pis);

            failed = true;

        } catch (IOException io) {

           System.out.println("UNREAD(buf):true");

        }

        return failed;

    }

    private static boolean testFileInputStream(FileInputStream fis)

                throws Exception {

        boolean failed = false;

        try {

            fis.getFD();

            System.out.println("GetFD: true");

        } catch (IOException io) {

           System.out.println("GetFD: false");

           failed = true;

        }

        fis.getChannel();

        System.out.println("GetChannel: true");

        return failed;

    }

}