September 2022
Intermediate to advanced
564 pages
9h 56m
English
In this chapter, we’ll look at how to test-drive the WebSocket API within our React app. We’ll use it to build a teaching mechanism whereby one person can share their screen and others can watch as they type out commands.
The WebSocket API isn’t straightforward. It uses a number of different callbacks and requires functions to be called in a certain order. To make things harder, we’ll do this all within a Redux saga: that means we’ll need to do some work to convert the callback API to one that can work with generator functions.
Because this is the last chapter covering unit testing techniques, it does things a little differently. It doesn’t follow a strict TDD process. The starting point for this chapter has a skeleton ...