def test_get_number_prefix_only(self): """ Ensure get_number_prefix returns the first digits when it is given a float """ self.assertEqual("", get_number_prefix("b99"))
def test_get_number_prefix_number(self): """ Ensure get_number_prefix returns the same string when it is given one with all digits """ self.assertEqual("1234", get_number_prefix("1234"))
def test_get_number_prefix_letter(self): """ Ensure get_number_prefix returns the first digits when it is given a float """ self.assertEqual("99", get_number_prefix("99b"))
def test_get_number_prefix_none(self): """ Ensure get_number_prefix returns an empty string given None """ self.assertEqual("", get_number_prefix(None))