In the last few chapters, we explored the benefits and types of testing, including an overview of E2E testing. The testing libraries we typically use to build test suites and make assertions rarely include E2E testing facilities, so it's necessary for us to find our own tooling for this.
The aim of an E2E test is to emulate user behavior upon our application and to make assertions about the application's state at various stages of user interaction. Typically, an E2E test will test a specific user flow, such as user can register new account or user can log in and buy product. Whether we're using JavaScript on the server side or the client side, if we're building a web application, it will be hugely beneficial to carry out such testing. To do so, we need to use a tool that can artificially create the user environment. In the...
