tdd.md

Test Driven Development

Jest

1. npm init -y
2. npm install --save-dev jest
3. Add to package.json to call Jest

"scripts": {
  "test": "jest"
}

• npm add --dev babel-jest

Jest will treat any file that ends in .test.js or .spec.js as a test file. So, if you have a file called divide.js, you can put a divide.test.js next to it in the same directory and Jest will pick it up when it runs.

• echo > capitalize.js && echo > capitalize.test.js
• npm run test
• Optional: echo node_modules/ >> .gitignore