We are trying to test a function called validateEmail. The purpose of the function is to take an email address as a

string, and either return a tuple of the local part and domain of the meail, or raise an exception if the input is not a

properly formatted emil address. For example, v..l@microsoft.com') would return ('bill',

'microsoft.com'). Calling, however, validateEmail('bill') would raise a NotValidEmail error.

What would the proper syntax be for testing that the validateEmail function raises an exception on invalid input?

1. self.assertEquals(validateEmail, NotValidEmail, "bill")
2. self.assertRaises(validateEmail, NotValidEmail, "bill")
3. self.assertRaises(NotValidEmail, validateEmail, "bill")
4. self.assertEquals(NotValidEmail, validateEmail, "bill")

Please help me understand this question by providing the code.