How to Set the Content Type in a ActionController::TestCase request

Question

I was trying to perform a get in my TestCase like this:

request.env['CONTENT_TYPE'] = 'application/json'
get :index,:application_name=>"Heka"

Though, it fails with a:

ActionView::MissingTemplate: Missing template alarm_events/index with {:handlers=>[:builder, :haml, :erb, :rjs, :rhtml, :rxml], :locale=>[:en, :en], :formats=>[:html]

Despite that in my controller I have:

respond_to :html, :json

def index
    @alarm_events=[...]

    respond_with @alarm_events do |format|
      format.json{
        render :json=>@alarm_events.map{|e| e.to_portal_representation}.to_json, 
               :content_type=>'application/json'
      }
    end
  end

How the hell should I code the intended request on the TestCase?

When I request alarm_events.json in the browser it works fine.

Thanks

Solution 1

I had to specify the format in the params for action controller testing:

get :index, {format: :json}

Solution 2

@request.accept = 'application/json'

Solution 3

I would suggest to set the header inside the format.json

def index
    @alarm_events=[...]

    respond_with @alarm_events do |format|
      format.json{
        render :json => @alarm_events.map{|e| e.to_portal_representation}.to_json, :content_type => 'application/json'
      }
    end