1 /*

     2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /**

    25  * @test

    26  * @bug 8039390

    27  * @summary Basic test for null argument

    28  */

    29 

    30 import java.util.Formatter;

    31 import java.util.Locale;

    32 

    33 public class NullArg {

    34 

    35     public static void main(String [] args) {

    36         char[] cs = new char[] {

    37             'b', 'B', 'h', 'H', 's', 'S', 'c', 'C', 'd', 'o', 'x', 'X',

    38             'e', 'E', 'f', 'g', 'G', 'a', 'A', 't', 'T',

    39         };

    40         char[] tcs = new char[] {

    41             'H', 'I', 'k', 'l', 'l', 'M', 'S', 'L', 'N', 'p', 'z', 'Z', 's',

    42             'Q', 'B', 'b', 'h', 'A', 'a', 'C', 'Y', 'y', 'j', 'm', 'd', 'e',

    43             'R', 'T', 'r', 'D', 'F', 'c'

    44         };

    45         for (char c : cs) {

    46             String expected = (c == 'b' || c == 'B') ? "false" : "null";

    47             if (Character.isUpperCase(c)) {

    48                 expected = expected.toUpperCase(Locale.ROOT);

    49             }

    50             if (c == 't' || c == 'T') {

    51                 for (char ct : tcs) {

    52                     if (!String.format("%" + c + ct, null).equals(expected)) {

    53                         throw new RuntimeException("%t" + ct + "null check failed.");

    54                     }

    55                 }

    56             } else {

    57                 if (!String.format("%" + c , null).equals(expected)) {

    58                     throw new RuntimeException("%" + c + "null check failed.");

    59                 }

    60             }

    61         }

    62     }

    63 }