In Rails, how do you functional test a Javascript response format?

Question

If your controller action looks like this:

respond_to do |format|
  format.html { raise \'Unsupported\' }
  format.js # index.js.erb
end

and yo

Answer 1

Pass in a :format with your normal params to trigger a response in that format.

get :index, :format => 'js'

No need to mess with your request headers.