The main goal of the project is to provide an easy way to maintain FactoryBot inside your project in a good shape.
Currently, it helps to find unused
Example output (from Rails RSpec Example):
$ FB_TRACE=1 rspec total number of unique used factories & traits: 3 total number of unique unused factories & traits: 3 unused factory admin => spec/factories.rb:10 unused trait with_address of factory admin => spec/factories.rb:11 unused global trait with_email => spec/factories.rb:16
Add this line to your application's Gemfile in the group you have
And then execute:
$ bundle install
Or install it yourself as:
$ gem install factory_trace
For now, the gem supports RSpec out of the box. You don't need to add any hooks. Just run the specs, e.g.
# output to STDOUT FB_TRACE=1 rspec # OR output to any file FB_TRACE_FILE=log/factory_trace.txt rspec
For any other case, add the following line where you want to start
tracking usage of
FactoryBot factories and traits:
Add this line where you want to stop tracking and get collected information:
Imagine, you run your specs in parts (as many as you need) and then want to track total usage of
factories and traits. For that, we have a
trace_only mode. You can try following commands here.
# one part FB_TRACE=trace_only FB_TRACE_FILE=fb_trace_result1.json bundle exec rspec spec/first_spec.rb # another part FB_TRACE=trace_only FB_TRACE_FILE=fb_trace_result2.json bundle exec rspec spec/second_spec.rb # output the usage to the console bundle exec factory_trace fb_trace_result1.json fb_trace_result2.json # or to the file FB_TRACE_FILE=fb_report.txt bundle exec factory_trace fb_trace_result1.json fb_trace_result2.json
bundle exec factory_trace won't load your project. Thus it runs fast and it's easier to configure it on CI.
You can configure
FactoryTrace.configure do |config| # default ENV.key?('FB_TRACE') || ENV.key?('FB_TRACE_FILE') config.enabled = true # default is ENV['FB_TRACE_FILE'] # when nil outputs to STDOUT config.path = 'log/factory_trace.txt' # default is true when +path+ is nil config.color = true # default is ENV['FB_TRACE'] || :full # can be :full or :trace_only config.mode = :full # used to trace definitions places # default is true # can be true or false config.trace_definition = true end
Tip: if you have some errors try to disable
trace_definition. That functionality does
many monkey patches to
FactoryBot. I will appreciate sharing an error stack trace so I can
After checking out the repo, run
bundle install to install dependencies.
rake spec to run the tests.
To install this gem onto your local machine, run
bundle exec rake install.
To release a new version, update the version number in
and then run
bundle exec rake release, which will create a git tag for the version,
push git commits and tags, and push the
.gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
The gem is available as open source under the terms of the MIT License.
Everyone interacting in the FactoryTrace project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.
FactoryTrace's changelog is available here.
Copyright (c) Evgeniy Demin. See LICENSE.txt for further details.