minitest - Oxycon Blog

What is the difference between Fixtures and Factories in Ruby on Rails tests?

Fixtures or factories for Rails tests? How each approach works: static YAML data Rails loads before every run versus FactoryBot objects built on demand, with examples and clear guidance on when speed favors fixtures and flexibility favors factories.

Apr 14, 2025

ruby

minitest

Finding the slowest tests in Minitest and Rspec using profiler

Slow test suites usually hide a few expensive tests. Minitest and RSpec both ship a built-in profiler: bin/rails test --profile and rspec --profile 10 list your slowest examples with execution times, so you know exactly which tests to optimize first.

Jul 10, 2023

What is the difference between Fixtures and Factories in Ruby on Rails tests?

Finding the slowest tests in Minitest and Rspec using profiler

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