Quelle SetReadOnly.java Sprache: JAVA

/*
* Copyright (c) 1998, 2012, 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 4091757 4939819 6728842
   @summary Basic test for setReadOnly method
   @build SetReadOnly Util
   @run main SetReadOnly
*/

import java.io.*;

public class SetReadOnly {

    public static void main(String[] args) throws Exception {
        if (Util.isPrivileged()) {
            System.out.println("Unable to test file permissions when running with privileges");
            return;
        }

        File d = new File(System.getProperty("test.dir", "."));
        File f = new File(d, "x.SetReadOnly");

        if (f.exists()) {
            if (!f.delete())
                throw new Exception("Can't delete test file " + f);
        }
        if (f.setReadOnly())
            throw new Exception("Succeeded on non-existent file: " + f);

        OutputStream o = new FileOutputStream(f);
        o.write('x');
        o.close();
        if (!f.setReadOnly())
            throw new Exception(f + ": Failed on file");
        if (f.canWrite())
            throw new Exception(f + ": File is writeable");

        f = new File(d, "x.SetReadOnly.dir");
        if (f.exists()) {
            if (!f.delete())
                throw new Exception("Can't delete test directory " + f);
        }
        if (!f.mkdir())
            throw new Exception(f + ": Cannot create directory");
        if (f.setReadOnly() && f.canWrite())
            throw new Exception(f + ": Directory is writeable");
        if (!f.delete())
            throw new Exception(f + ": Cannot delete directory");

    }

}

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