/*

 * Copyright (c) 1997, 1998, 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 4027914

   @summary Check getParent's handling of root directories

 */

import java.io.File;

public class GetParent {

    static void check(String path, String[] parents) throws Exception {

        File f = new File(path);

        String p;

        System.err.print(path + ":");

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

            p = f.getParent();

            System.err.print(" (" + p + ")");

            if (p == null)

                throw new Exception("No parent for " + f);

            if (! p.equals(parents[i]))

                throw new Exception("Wrong parent for " + f

                                    + ": Expected " + parents[i]

                                    + ", got " + p);

            f = new File(p);

        }

        if (f.getParent() != null)

            throw new Exception("Too many parents for " + path);

        System.err.println();

    }

    static void testUnix() throws Exception {

        check("foo", new String[] { });

        check("./foo", new String[] { "." });

        check("foo/bar/baz", new String[] { "foo/bar", "foo" });

        check("../../foo", new String[] { "../..", ".." });

        check("foo//bar", new String[] { "foo" });

        check("/foo/bar/baz.gorp",

              new String[] { "/foo/bar", "/foo", "/" });

    }

    static void testWin32() throws Exception {

        System.err.println("Win32");

        check("foo", new String[] { });

        check(".\\foo", new String[] { "." });

        check("foo\\bar\\baz", new String[] { "foo\\bar", "foo" });

        check("..\\..\\foo", new String[] { "..\\..", ".." });

        check("c:\\foo\\bar\\baz.xxx",

              new String[] { "c:\\foo\\bar", "c:\\foo", "c:\\" });

    }

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

        if (File.separatorChar == '/') testUnix();

        if (File.separatorChar == '\\') testWin32();

    }

}