How to use the aioftp.Permission function in aioftp

def test_permission_is_parent():
    p = aioftp.Permission("/foo/bar")
    assert p.is_parent(pathlib.PurePosixPath("/foo/bar/baz"))
    assert not p.is_parent(pathlib.PurePosixPath("/bar/baz"))

def test_reprs_works():
    repr(aioftp.Throttle())
    repr(aioftp.Permission())
    repr(aioftp.User())

def test_permission_representation():

    p = aioftp.Permission(writable=False)
    nose.tools.eq_(
        repr(p),
        "Permission(PurePosixPath('/'), readable=True, writable=False)"
    )