Testing & Best Practices

Question 1

Which libraries are commonly used for testing React applications?

Answer 1

Jest and React Testing Library.

Question 2

How would you mock a module during testing in Jest?

Answer 2

Using jest.mock().

Question 3

What is the main principle of the React Testing Library?

Answer 3

The more your tests resemble the way your software is used, the more confidence they can give you.

Question 4

What are some best practices when writing React components?

Answer 4

Keep components small and focused, favor functional components, lift state up when needed, and make components reusable.