6 Testing frontend applications
This chapter covers
- Replicating a browser’s JavaScript environment in your tests
- Asserting on DOM elements
- Handling and testing events
- Writing tests involving browser APIs
- Handling HTTP requests and WebSocket connections
Trying to write a client-side application without using JavaScript is as difficult as baking a dessert without carbohydrates. JavaScript was born to conquer the web, and in browsers, it has shone.
In this chapter, we’ll cover the fundamentals of testing frontend applications. Together, we’ll build a small web client for the backend we wrote in chapter 4 and learn how to test it.
During the process of building and testing this application, I’ll explain the peculiarities of running JavaScript ...
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