'The self keyword should be visible even for builtins, if not
instantiated.'

def test_builtins(self):

    p = self.params('str.endswith(')
    assert (p[0].name == 'self')
    assert (p[1].name == 'suffix')
    p = self.params('str().endswith(')
    assert (p[0].name == 'suffix')
