Actually RubyMine provides some basic support for Shoulda framework. Take a look on following screenshot =)
RubyMine 1.1 and RubyMine 1.1.1 supports:
1. Running current Shoulda test file / folder with should test
2. Show results in nice GUI test runner.
And following features RubyMine doesn’t provide but they will be available in RubyMine 1.5
1. Ability to run single should… block
2. Navigation to test source from tests tree in Test Runner GUI
3. Autocompletion/resolve support for assert_* methods, etc.
4. Anything else =) ?
My Way 