In JavaScript, any function can return an object ... If we can cover the functionality in a unit test, we should do it. Unit tests are generally easier to maintain, less flakey, and less expensive to ...

Mark Michaelis walks you through the Visual Studio tooling and project setup you'll need to get the most out of your JavaScript unit testing. As I detailed in my recent article "A TypeScript Primer," ...

Instance-per-test (a la JUnit) behavior. No need to tidy up your JS state after each unit test as each test function is executed with a clean slate. Easy configuration of the JavaScript code to be ...

This runtime interaction between JavaScript and the DOM is error-prone and challenging to test. In order to unit test a JavaScript function that has read/write DOM operations, a DOM instance has to be ...