RSpec 1.1 is now a part of the default plugin kit for Heroku apps.
We’ve been fans of RSpec for a while now, and feel that it represents the future of TDD/BDD for the Rails world. If you’re not familiar with RSpec, read up and then give it a try.
You don’t need to install anything to use RSpec in your Heroku app, but you do need to initialize the spec/ and stories/ directories by running the rspec generator. Just open the Generate dialog, type in rspec, and click Run.
Once you’ve written some specs, you can run them the usual way: open a rake console and type spec. You can still run your Test::Unit tests with the test command, or you can run tests followed by spec...