Redux Toolkit Course

$ git clone https://github.com/webmasterdevlin/redux-toolkit-course.git
$ cd redux-toolkit-course
$ npm install
$ npm run start:fullstack

The React app, and the fake web service will run concurrently.

React Testing Library's best practices in writing tests

https://kentcdodds.com/blog/common-mistakes-with-react-testing-library

• always use eslint-plugin-testing-library and eslint-plugin-jest-dom
• always use screen
• use screen.getByRole instead of screen.getByTestId
• use screen.queryByRole only when expecting not.toBeInTheDocument
• use await screen.find* instead of await waitFor/wait
• if necessary, use await waitFor instead of await wait
• use userEvent instead of fireEvent
• don't use userEvent inside the callback of waitFor

Cypress' best practices in writing tests

https://docs.cypress.io/guides/references/best-practices.html

Application's styles

• The application is using test ID instead of role when querying dom elements
• Test IDs are simple and isolated