def test_split_args_cannot_find_matching_bracket():
formatter = FileFormatter('filename.txt')
formatter.set_contents("Money(foo")
with pytest.raises(RuntimeError) as exc_info:
formatter.split_args(6)
assert str(exc_info.value
) == "Unable to find closing bracket for start position '6'"
def test_split_args(actual, expected):
formatter = FileFormatter('filename.txt')
formatter.set_contents(actual)
match = formatter.split_args(expected.start)
assert len(match.args) == len(expected.args)
assert match == expected