20.8 Testing the example interface

You have now finished specifying the example interface and its callback functions, so you can test it.

1. Choose File > Save or click
to save ib-example.lisp , ib-callbacks.lisp , and defsys.lisp if you have not already done so.

Next, you need to load the ib-test system into the environment.

2. In the editor, make sure that the file defsys.lisp is visible, and choose File > Load to load it and define the system.
3. In the Listener, type the following form.
(load-system 'ib-test)

The ib-test system, together with its members, is loaded.

4. To test the interface, type the following form into the listener.

A fully functional instance of the example interface is created for you to experiment with, as shown in Example interface.