7 best Ruby Testing Data libraries in 2025

Ruby testing data open source libraries are the best option to generate realistic test data sets. They allow you to seed a database with multiple entries and then make assertions against it. This is a powerful method of testing because it lets you make assertions against real values in your database, which is how your application will be used in production. Ruby Testing Data is a curated collection of some of the best Ruby testing data gems for your project. Create massive amounts of realistic fake data for testing, running simulations, and creating analytics. factory_bot - A library for setting up Ruby objects as test data; traver - Test data generation framework; dataset exceptional tool for creating test data sets using ActiveRecord.