Oh, I tried that, and it worked for some tests, but strangely not the one I was trying to run, `test/exercism/markdown_test.rb`. I got an error saying that `rouge` couldn't be found... which is weird, since `rake test` works fine, as does `rake test TEST=test/exercism/markdown_test.rb`, as does running the server. I'm using chruby, perhaps that has something to do with it?