The Industry Standard If you’ve been in the Rails ecosystem for a while, RSpec is likely your default. It’s what most bootcamps teach, it’s what most enterprise companies use, and it’s undeniably powerful. The “Better Specs” guide is practically the Ruby bible.

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A solo Rails developer explains why they switched from RSpec back to Minitest, the Rails default testing framework. Key reasons include: Minitest uses plain Ruby classes instead of a DSL, faster boot times and test execution, alignment with Rails' 'omakase' philosophy reducing maintenance debt, Rails fixtures outperforming FactoryBot for speed, and Minitest encouraging simpler, more readable test code over clever abstractions.

Why I Switched from RSpec to Minitest (Rails Default)