Selenium's Sweet Spot: Preventing Catastrophes

I'm proud of the automated tests I built at Sulia. They run in two minutes. They prevent big bugs from reaching production. The false positive rate is about 1%. In over a decade of working on big teams and on small ones, I haven't seen a more effective end-to-end testing regime. It didn't start that way. Nine months ago, our 3-person team had no UI testing at all. Along the way, we've learned some lessons beyond the obvious "use CSS selectors" stuff.

Lesson One: Selenium isn't always the best way to assure quality

The biggest lesson of all is the title of this post. Selenium's sweet spot is preventing catastrophes...

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