import functools


def foo():
    """
    >>> 'one test'
    'one test'
    """

class Wrapper:
    def __init__(self, func):
        self.func = func
        functools.update_wrapper(self, func)

    def __call__(self, *args, **kwargs):
        self.func(*args, **kwargs)


@Wrapper
def bar():
    """
    >>> 'one other test'
    'one other test'
    """

assert 'one other test' in bar.__doc__


if __name__ == "__main__":
    import doctest
    doctest.testmod(verbose=True)