gitmathub/jest-mock

Teaching mock testing with Jest

Exampels of Jest Testing

Istallation

npm i --save-dev jest

With Babel support

npm i -save-dev babel-jest @babel/core @babel/preset-env

# if you use promises
npm i -save-dev @babel/plugin-transform-runtime

# for testing on the console
npm i -save-dev @babel/node

Check also the .babelrc.json

With VSCode autocomplete

 npm i -save-dev @types/jest

Resources

• https://stackabuse.com/using-mocks-for-testing-in-javascript-with-jes/
• https://jestjs.io/docs/en/mock-functions#mock-property