1 /*
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  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).
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  23 
  24 /*
  25  * @test
  26  * @bug 7003643
  27  * @summary Make sure MessageFormat.toPattern produces correct quoting. (SPI part is tested in PluggableLocale tests.)
  28  * @key randomness
  29  */
  30 
  31 import java.text.*;
  32 import java.util.*;
  33 
  34 public class Bug7003643 {
  35     private static final int N = 5;
  36 
  37     private static final String[] elements = {
  38         "'{'", "'{", "{", "''", "}", "a", "'",
  39     };
  40 
  41     public static void main(String[] args) {
  42         Random rand = new Random();
  43         int count = 0;
  44         int max = (int) (Math.pow((double)elements.length, (double)N)/0.52);
  45         while (count < max) {
  46             // Create a random pattern. If the produced pattern is
  47             // valid, then proceed with the round-trip testing.
  48             StringBuilder sb = new StringBuilder();
  49             for (int i = 0; i < N; i++) {
  50                 sb.append(elements[rand.nextInt(elements.length)]);
  51             }
  52             String pattern = sb.toString();
  53             MessageFormat mf = null;
  54             try {
  55                 mf = new MessageFormat(pattern);
  56             } catch (IllegalArgumentException e) {
  57                 // bad pattern data
  58             }
  59             if (mf == null) {
  60                 continue;
  61             }
  62             count++;
  63             String res1 = MessageFormat.format(pattern, 123);
  64             String toPattern = mf.toPattern();
  65             String res2 = MessageFormat.format(toPattern, 123);
  66             if (!res1.equals(res2)) {
  67                 String s = String.format("Failed%n      pattern=\"%s\"  =>  result=\"%s\"%n"
  68                                          + "  toPattern()=\"%s\"  =>  result=\"%s\"%n",
  69                                          pattern, res1, toPattern, res2);
  70                 throw new RuntimeException(s);
  71             }
  72         }
  73     }
  74 }