It has me run a test directly like 'ruby test/unit/meeting_test.rb . I
just changed the require at the top from:
require 'test_helper'
to:
require 'test/test_helper'
I don't know if this will help you when running from rake though, but
it worked for me. Perhaps this is a mistake with 2.1.0. I'm don't
know. I'm a noob.