##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
Review of testing
You've learned to write tests with Jest and similar frameworks. You can use matchers to verify values, organize tests with describe blocks, and handle async code.
You understand mocking for isolating code and testing DOM interactions. You know what to test and how to write testable code. Testing gives you confidence that your code works and stays working.
