Test Driving Rails is a Ruby on Rails testing book focused on testing with Minitest and fixtures by Josef Strzibny

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A comprehensive guide to testing Rails applications using Minitest and fixtures, recently updated for Rails 8.1 and Minitest 6. Covers test cases, assertions, mocks, stubs, model/controller/system tests, and database optimization for SQLite, MySQL, and PostgreSQL. Includes Claude AI skills for automated test writing and emphasizes the default Rails testing stack over alternatives like RSpec and factories.