Roundabout
A Rails Engine that generates and shows a page transition diagram for your Rails app from system tests.

Requirements
Ruby 2.x
Rails 3 or newer
RSpec / Minitest / TestUnit
Capybara
Installation
Bundle this gem to your Rails app's development and test env:
gem 'roundabout', group :development, :test
Usage
Run the whole tests with ROUNDABOUT envvar (I suppose parallel spec is not supported ATM):
% ROUNDABOUT=1 rails test:system
All page transitions via capybara will be recorded, then woven into a diagram.
To see the generated diagram, just browse at your http://localhost:3000/roundabout.
You can also download a png image version and a PDF version from that page.
Example
The image shown at the very top of this documentation was generated from Redmine project's codebase.
Contributing
Send me a PR with a patch.