public void Validate_RequiresLetterAndPasswordWith_PassesValidation()
 {
   var handler = new NeedsLetterValidationHandler();
   var result = handler.Validate("1234567890A");
   Assert.IsTrue(result);
 }
 public void Validate_RequiresLetterAndPasswordWithout_FailsValidation()
 {
   var handler = new NeedsLetterValidationHandler();
   var result = handler.Validate("1234567890");
   Assert.IsFalse(result);
 }