Test Kitchen: A Recipe for Good Tests

Most of us have heard that tests should be isolated, composable, or deterministic, but what does that mean in practice? How do you write a good test and how does the rest of your codebase change once you do? What effect does it have on your developer experience? In this talk I'll walk through a hand full of properties good tests have, show how we can write tests that follow these guidelines in JavaScript, and discuss when to consider bending the rules a bit.