test/java/util/UUID/UUIDTest.java

rev 9894 : 8006627: UUID to/from String performance should be improved by reducing object allocations

*** 94,103 ****
--- 94,120 ----
              UUID u1 = UUID.randomUUID();
              UUID u2 = UUID.fromString(u1.toString());
              if (!u1.equals(u2))
                  throw new Exception("UUID -> string -> UUID failed");
          }
+ 
+         testFromStringError("-0");
+         testFromStringError("x");
+         testFromStringError("----");
+         testFromStringError("-0-0-0-0");
+         testFromStringError("0-0-0-0-");
+         testFromStringError("0-0-0-0-0-");
+         testFromStringError("0-0-0-0-x");
+     }
+ 
+     private static void testFromStringError(String str) {
+         try {
+             UUID test = UUID.fromString(str);
+             throw new RuntimeException("Should have thrown IAE");
+         } catch (IllegalArgumentException iae) {
+             // pass
+         }
      }
  
      private static void versionTest() throws Exception {
          UUID test = UUID.randomUUID();
          if (test.version() != 4)