How to use the asgiref.compatibility.double_to_single_callable function in asgiref

def test_double_to_single_signature():
    """
    Test that the new object passes a signature test.
    """
    assert (
        is_double_callable(double_to_single_callable(double_application_function))
        == False
    )

async def test_double_to_single_communicator():
    """
    Test that the new application works
    """
    new_app = double_to_single_callable(double_application_function)
    instance = ApplicationCommunicator(new_app, {"value": "woohoo"})
    await instance.send_input({"value": 42})
    assert await instance.receive_output() == {"scope": "woohoo", "message": 42}