Published: December 4, 2025
11
22
456
The Fizzy test suite runs in UNDER FOUR SECONDS! Nearly 2,500 assertions. The magic is to lean hard on vanilla Rails fixtures and parallel test runners. Not only is this blazingly fast, but it's also achingly beautiful.
Only using a single core to run your test suite in 2025 is self-sabbotage 😂. Also, stay away from factories. You need fixtures for this kind of performance.