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