/*

 * 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

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 */

/* @test

 * @bug 6808647

 * @summary Checks that a DirectoryStream's iterator returns the expected

 *    path when opening a directory by specifying only the drive letter.

 * @library ..

 */

import java.nio.file.*;

import java.io.File;

import java.io.IOException;

public class DriveLetter {

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

        String os = System.getProperty("os.name");

        if (!os.startsWith("Windows")) {

            System.out.println("This is Windows specific test");

            return;

        }

        String here = System.getProperty("user.dir");

        if (here.length() < 2 || here.charAt(1) != ':')

            throw new RuntimeException("Unable to determine drive letter");

        // create temporary file in current directory

        File tempFile = File.createTempFile("foo", "tmp", new File(here));

        try {

            // we should expect C:foo.tmp to be returned by iterator

            String drive = here.substring(0, 2);

            Path expected = Paths.get(drive).resolve(tempFile.getName());

            boolean found = false;

            Path dir = Paths.get(drive);

            try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {

                for (Path file : stream) {

                    if (file.equals(expected)) {

                        found = true;

                        break;

                    }

                }

            }

            if (!found)

                throw new RuntimeException("Temporary file not found???");

        } finally {

            tempFile.delete();

        }

    }

}