you can have good experiences with unit tests or bad ones depending on the health of your codebase. Hard to test code is a smell that many people interpret as b

you can have good experiences with unit tests or bad ones depending on the health of your codebase. Hard to test code is a smell that many people interpret as being a problem with the concept of unit testing. Most of my experience is with React, and the majority of react devs I've seen don't unit test their code, because they don't write enough pure testable functions. As a result the community has leaned heavily on React Testing Library which is AMAZING for integration testing. Instead of checking that your function returns the right value, people will mount the component and then check to see that the right value is displayed in the rendered DOM. This obviously works, but writing the logic as a pure function and unit testing that function with a lot of different inputs gives you much more confidence.