Add docstrings to new test methods

tests/integration/standard/test_types.py

@@ -671,6 +671,9 @@ class TypeTests(unittest.TestCase):
             self.assertEqual(created_tuple, result['v_%s' % i])
 
     def test_tuples_with_nulls(self):
+        """
+        Test tuples with null and empty string fields.
+        """
         if self._cass_version < (2, 1, 0):
             raise unittest.SkipTest("The tuple type was introduced in Cassandra 2.1")
 

tests/integration/standard/test_udts.py

@@ -232,6 +232,9 @@ class TypeTests(unittest.TestCase):
         c.shutdown()
 
     def test_udts_with_nulls(self):
+        """
+        Test UDTs with null and empty string fields.
+        """
         c = Cluster(protocol_version=PROTOCOL_VERSION)
         s = c.connect()