/** Test of setMail method, of class DataUsuario. */
 @Test
 public void testSetMail() {
   System.out.println("setMail");
   String mail = "*****@*****.**";
   DataUsuario instance = new DataUsuario("Juan", "*****@*****.**");
   instance.setMail(mail);
   // TODO review the generated test code and remove the default call to fail.
   // fail("The test case is a prototype.");
 }