I have a rails app, plus code in lib. I have the spec directory under RAILS_ROOT.
How should I put my tests in spec?
Currently, I am thinking of the following:
spec/lib
spec/controllers
spec/models
Further, I do some common setup / use common steps (e.g., generate an invalid user) in many tests. Where do you recommend I put the modules that do the common setup /steps in my rspec tests?
Your proposed directory structure is fine.
As for your helper modules, a common idiom is for these to go in the spec/support directory. You can include them all automatically by placing the following code into your spec_helper.rb file:
Dir[File.expand_path('../support/**/*.rb', __FILE__)].each { |f| require f }
You could just place the code directly in spec_helper.rb itself, but that can get messy and they could be wiped out by regenerating the helper file.