def test_should_throw_error_on_invalid_value(self):
constraint = RegexConstraint(reg="^[A-Za-z0-9]+$")
with self.assertRaises(RegexMismatchException):
constraint.validate("Hello 1")
def test_should_validate_values_within_regex(self):
constraint = RegexConstraint(reg="^[A-Za-z0-9]+$")
self.assertEqual("Hello1", constraint.validate("Hello1"))