factory_bot is a fixtures replacement with a straightforward definition syntax, support for multiple build strategies (saved instances, unsaved instances, attribute hashes, and stubbed objects), and support for multiple factories for the same class (user, admin_user, and so on), including factory inheritance.

If you want to use factory_bot with Rails, see factory_bot_rails.

Interested in the history of the project name?

Check out the guide.

See our extensive reference, guides, and cookbook in the factory_bot book.

For information on integrations with third party libraries, such as RSpec or Rails, see the factory_bot wiki.

We also have a detailed introductory video, available for free on Upcase.

Run:

bundle add factory_bot

To install the gem manually from your shell, run:

gem install factory_bot

Supported Ruby versions are listed in .github/workflows/build.yml

• Rubygems
• Stack Overflow
• Issues
• GIANT ROBOTS SMASHING INTO OTHER GIANT ROBOTS

• FactoryTrace - helps to find unused factories and traits.

Please see CONTRIBUTING.md.

factory_bot was originally written by Joe Ferris and is maintained by thoughtbot. Many improvements and bugfixes were contributed by the open source community.

factory_bot is Copyright © 2008 Joe Ferris and thoughtbot. It is free software, and may be redistributed under the terms specified in the LICENSE file.