Chapter 4. Using Mock Objects to Test Interactions
Having looked at the
Stock classes, let us now turn our attention to the
Event class. The
Event class is very simple: receivers can register with the event to be notified when the event occurs. When the event fires, all the receivers are notified of the event.
A more detailed description is as follows:
- Event classes have a
connectmethod, which takes a method or function to be called when the event fires
- When the
firemethod is called, all the registered callbacks are called with the same parameters that are passed to the
Writing tests for the
connect method is fairly straightforward—we just need to check that the receivers are being stored properly. But, how do we write the tests ...