audio español - https://youtu.be/Jn5Cbl3VrMk This no-slides talk demos creating tests in JavaScript. We live-code sync tests, async with callbacks, promise-based tests, and async/await tests. We craft tests in Node, tests in the Browser, and unit tests that run from CI. This can be a great tool in your toolchest of unit testing, integration testing, end-to-end testing, component testing, etc.