require "abstract_unit" require "active_support/core_ext/hash/conversions" class MetalRenderingController < ActionController::Metal include AbstractController::Rendering include ActionController::Rendering include ActionController::Renderers end class MetalRenderingJsonController < MetalRenderingController class Model def to_json(options = {}) { a: "b" }.to_json(options) end def to_xml(options = {}) { a: "b" }.to_xml(options) end end use_renderers :json def one render json: Model.new end def two render xml: Model.new end end class RenderersMetalTest < ActionController::TestCase tests MetalRenderingJsonController def test_render_json get :one assert_response :success assert_equal({ a: "b" }.to_json, @response.body) assert_equal "application/json", @response.content_type end def test_render_xml get :two assert_response :success assert_equal(" ", @response.body) assert_equal "text/plain", @response.content_type end end