Testing Front-End Code Without Losing Your Mind

I want tests that let me change the implementation without rewriting the entire suite. If a user can still complete the task, most of the internal rearrangement shouldn't matter to the test.

I'd put effort into the important journeys and the awkward logic, then keep an eye on how often failures point to real problems. A test that regularly needs updating for harmless changes is worth reconsidering. More assertions aren't necessarily buying more confidence.