/** Tests process method with the input "SOME_VALUE" */
 @Test
 public void processTestWithException() {
   try {
     valueToString.process("SOME_VALUE");
   } catch (IllegalArgumentException illegalArgumentException) {
     Assert.assertTrue(
         illegalArgumentException.getMessage().startsWith("invalid argument SOME_VALUE"));
   }
 }
 /** Tests process method with the input "VALUE3" */
 @Test
 public void processTestWithValue3() {
   valueToString.process("VALUE3");
   String output = valueToString.getReturnVal();
   assertEquals("SERVICECALL", output);
 }
 /** Tests process method with the input "VALUE2 */
 @Test
 public void processTestWithValue2() {
   valueToString.process("VALUE2");
   String output = valueToString.getReturnVal();
   assertEquals("2", output);
 }