Update test_phone_number.py

Author: ajrice6713

test/unit/models/bxml/test_phone_number.py

@@ -15,6 +15,7 @@ class TestPhoneNumber(unittest.TestCase):
     def setUp(self):
         self.phone_number = PhoneNumber(
             number="+19195551234",
+            uui="abc123",
             transfer_answer_url="https://example.com/webhooks/transfer_answer",
             transfer_answer_method="POST",
             tag=""
@@ -25,10 +26,5 @@ def test_instance(self):
         assert isinstance(self.phone_number, Verb)
 
     def test_to_bxml(self):
-        expected = '<PhoneNumber transferAnswerUrl="https://example.com/webhooks/transfer_answer" transferAnswerMethod="POST" tag="">+19195551234</PhoneNumber>'
-        assert expected == self.phone_number.to_bxml()
-
-    def test_with_uui(self):
-        self.phone_number.uui = "abc123"
         expected = '<PhoneNumber transferAnswerUrl="https://example.com/webhooks/transfer_answer" transferAnswerMethod="POST" tag="" uui="abc123">+19195551234</PhoneNumber>'
         assert expected == self.phone_number.to_bxml()