MultiRails by Relevance, http://thinkrelevance.com Rob Sanheim - MultiRails lead
MultiRails lets you test your Rails plugin or app against many versions of Rails in one sweep.
rubyforge: http://rubyforge.org/projects/multi-rails/ rdocs: http://multi-rails.rubyforge.org/ svn stable: http://robsanheim.googlecode.com/svn/tags/stable/multi_rails (gem is released from here) svn trunk: http://robsanheim.googlecode.com/svn/trunk/multi_rails mailing list: http://groups.google.com/group/multi_rails
MultiRails allows easy testing against multiple versions of Rails for your Rails specific gem or plugin. IT also has tentative support testing Rails applications against multiple versions of Rails.
Use MultiRails to hook in Rails 2.0 testing in your continuous integration. Still working on Rails 2.0 support? Use MultiRails to see where your test suite falls down against the 2.0 preview releases of Rails.
MultiRails was initially developed by members of Relevance while developing Streamlined against edge Rails. To see how Streamlined uses MultiRails, go to http://trac.streamlinedframework.org.
* easily test plugins/extensions using a require from your test_helper.rb and a require in your RakeFile * rake tasks to test against a specified version of Rails, the latest version, or all versions * tentative support for testing plain Rails apps against multiple versions of Rails * Uses rubygems for version management of Rails
* improve docs on how to override what files are required by multi_rails * maybe add ability to load plain Rails versions -- ie checked out copies not in RubyGems
* (__For Rails apps only__) multi_rails will rename your vendor/rails directory to vendor/rails.off if it finds one within your rails app. We have to do this to make Rails fall back to RubyGems rails. Multi_rails will rename back to the correct vendor/rails when done testing, so it will not interrupt your app in normal use. * (__For Rails apps only__) multi_rails needs to add a line to top of your environment.rb to hook into -- see the instructions below for more details
* Ruby 1.8.5 or higher * Rubygems * Rails 1.2.1 or higher * at least one copy of Rails installed via rubygems.
== INSTALLING FOR RAILS APPS
* install the plugin, which will copy the multi_rails_runner into your script folder on install. script/plugin install http://robsanheim.googlecode.com/svn/tags/stable/multi_rails
* Run the multi_rails bootstrap command to get your Rails app ready to go with multi_rails - this will add a require line to the top of your environment.rb needed for multi_rails to work right. script/multi_rails_runner bootstrap
* Run your tests against all versions of Rails installed (the default): script/multi_rails_runner or run our tests against the most recent version of Rails you have installed: script/multi_rails_runner latest or just a specific version: MULTIRAILS_RAILS_VERSION=1.2.5 script/multi_rails_runner one
== INSTALLING FOR PLUGINS
* Install multi_rails sudo gem install multi_rails
* In your projects Rakefile, require the multi_rails Rake tasks.
* Run rake -T to verify you see the multi_rails tasks. rake -T multi_rails # should see "rake test:multi_rails:all, rake test:multi_rails:latest...etc"
* In your test_helper, require multi_rails_init *before* any rails specific requires (activerecord, actioncontroller, activesupport, etc).
* Run the multi_rails:all rake task to run your test suite against all versions of Rails you have installed via gems. Install other versions of Rails using rubygems to add them to your test suite.
* For changing the Rails version under test, set the environment variable MULTIRAILS_RAILS_VERSION to version you want, and run the multi_rails:one task or just run a test class directly.
* Join the mailing list! http://groups.google.com/group/multi_rails firstname.lastname@example.org
* Rails plugin testing is pretty solid, but rails *app* testing is still new. Post issues to the mailing list. * Getting gem activation errors? Post to the list with how you are using multi_rails, and I'll try to help.
(The MIT License)
Copyright (c) 2007 Relevance, http://thinkrelevance.com
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