Wes and Scott talk all about testing! SnapShooter - Sponsor SnapShooter is a Digital Ocean backup service. You get fine grain control over when you backup and how long you backup for. Easily restore from previous snapshots. Use the code SYNTAX to get 20% off your first 12 months. Fluent Conf - Sponsor Developers, software engineers, designers, and web performance professionals flock to Fluent in pursuit of a common goal: building a better web. That means delivering fast, secure, accessible experiences to users and customers. Fluent covers a broad range of technologies and topics to provide web programming professionals with the skills, connections, and inspiration needed to build better online and mobile experiences. Fluent is this June 11-14 in San Jose, CA. Save 20% today with code: SYNTAX Show Notes 3:00 Testing Talk Is testing scary? 8:00 Unit Testing Pure Functions Mutations Pass in dates to functions 11:40 Integration Testing Integration Testing Mémé 14:00 Visual Regression Testing 17:00 End to End Testing 21:00 Why would you want to test? Confidence Easy Refactoring Finding edge cases 33:00 Test Runners vs Assertion Libraries Jest Mocha Cucumber BBD (Big Black Dog) BDD (Behaviour Driven Development) Cypress.io Enzyme React Testing Library 50:00 Mocking Spy Functions 54:00 Snapshot Testing Jest Snapshot Testing 57:00 TDD (Test Driven Development) BDD (Behaviour Driven Development) Continuous Integration Travis CI ×SICK×PICKS× None today! Shameless Plugs Vue.js for Everyone SMASH that Subscribe Button on Wes' YouTube Tweet us your tasty treats! Scott's Instagram LevelUpTutorials Instagram Wes' Instagram Wes' Twitter Wes' Facebook Scott's Twitter Make sure to include @SyntaxFM in your tweets