Convert test tasks to run all and a single file to rake test / minitest
Convert test tasks to run all and a single file to rake test / minitest

I'm not sure how to run a single test based on the line number though, I
know it's possible based on the test name, and I know Rails has
implemented some handling for the line number, but I don't think it's
possible with bare rake/ruby.

adamlogic/rails_autoscale_agent,adamlogic/rails_autoscale_agent,adamlogic/rails_autoscale_agent