def test_e_message_head(self): self.assertFalse(Library.message_head("xxxx"))
def test_n_message_head(self): self.assertIsInstance(Library.message_head("01: "), str)
def test_e_message_head(self): self.assertFalse(Library.message_head("xxxx"))
def test_n_message_head(self): self.assertIsInstance(Library.message_head("01: "), str)