Run this example which illustrates unit testing using python's unittest module. Correct the problems with the code.

Suppose that valid email addresses need to the follow these rules:

- the address must contain one and only one @ character

- the string following the @ character MUST be abcSteel.com

- the string preceding the @ character must contain ONLY letters and optionally one period. It must be at least one letter.

filename: modValidateEmail.py

def isValidEmail(email): if email.count('@') != 1: #email address MUST aheve exactly one @ character return False tmpList = email.split('@') #create a list of 2 strings(username and mandated company name if len(tmpList) == 2: #there must be a username AND a company name return False

userName = tmpList[0] for c in userName: if not c.isalpha() and c!='.': return False inst=tmpList[1] if inst !='abcSteel.com': return False

#filename: UnitTestvalidEmail.py from unittest import * from modValidateEmail import* class TestvalidEmail(TestCase): #create a subclass of unittest's TestCase def testUserName(self): self.assertEqual (isValidEmail('joe4@abcSteel.com'),False) self.assertEqual(isValidEmail('joe$smith@abcSteel.com'),False) self.assertEqual (is ValidEmail('joe.allen.smith@abcSteel.com'),False) def testOneAmpersand(self): self.assertEqual(is ValidEmail('jim.'), False) self.assertEqual (isValidEmail(jim@smith@abcSteel.com'), False) def testCompany(self) self.assertEqual(isValidEmail('jim.smith@mnstate.com'), False) self.assertEqual(isValidEmail(jim.smith@abcStreel_com'),False) def testGoodEmail(self): self.assertEqual(isValidEmail('jesse.jones@abcSteel.com'),True) self.assertEqual(isValidEmail('jesse@abcSteel.com'), True) self.assertEqual(isValidEmail('jim.@abcSteel.com'),True) #main #unittest.ma.n() suite = TestLoader().loadTestsFromTestCase(TestvalidEmail) TextTestRunner(verbosity-2).run(suite) unittest