def test_good(self):
   self.code = ZipCode.check_zipcode("90231-9023")
   correct_code = "90231-9023"
   self.assertEqual( correct_code, self.code)
 def test_middle(self):
   self.code = ZipCode.check_zipcode("9-8  201")
   correct_code = "98201"
   self.assertEqual( correct_code, self.code)
 def test_vbad(self):
   self.code = ZipCode.check_zipcode("oyhgegs")
   correct_code = ""
   self.assertEqual( correct_code, self.code)
 def test_bad(self):
   self.code = ZipCode.check_zipcode("^89623y8o")
   correct_code = ""
   self.assertEqual( correct_code, self.code)
 def setUp(self):
   self.code = ZipCode.check_zipcode("")