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 }