test/java/io/File/NullArgs.java

/*
 * Copyright (c) 1999, 2001, 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 4203650
   @summary Ensure that File constructors and methods catch null arguments
   @run main/othervm NullArgs
 */


import java.io.File;

public class NullArgs {

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

        for (int i = 0;; i++) {
            try {
                switch (i) {
                case 0:  new File((String)null);  break;
                case 1:  new File((String)null, null);  break;
                case 2:  new File((File)null, null);  break;
                case 3:  File.createTempFile(null, null, null);  break;
                case 4:  File.createTempFile(null, null);  break;
                case 5:  new File("foo").compareTo(null);  break;
                case 6:  new File("foo").renameTo(null);  break;
                default:
                    System.err.println();
                    return;
                }
            } catch (NullPointerException x) {
                System.err.print(i + " ");
                continue;
            }
            throw new Exception("NullPointerException not thrown (case " +
                                i + ")");
        }

    }

}