':py:obj:`OpenSSL.CRL.add_revoked` accepts its single argument as the
``revoked`` keyword argument.'

def test_add_revoked_keyword(self):

    crl = CRL()
    revoked = Revoked()
    crl.add_revoked(revoked=revoked)
    self.assertTrue(isinstance(crl.get_revoked()[0], Revoked))
