human
Here's a good function header given the following:
I wrote the below code

    def stub_terminal_size():
        return (5, 5)
    old_func = click.get_terminal_size
    click.get_terminal_size = stub_terminal_size
    mycli = MyCli()
    assert isinstance(mycli.get_reserved_space(), int)
    click.get_terminal_size = old_func

What's a good function header?
assistant
#Here's a good function header.

def test_reserved_space_is_integer():