Rspec 测试自动完成

Question

我需要在我的控制器中测试自动完成操作。我的测试只需要期望返回计数，但我不知道该怎么做。

这是方法本身：

def autocomplete
    respond_to do |format|
      format.json do
        model_suggestions = Vehicle.select([:model, :make]).where('make IS NOT NULL AND model IS NOT NULL').reorder('').order("make ASC, model ASC")

        if params.has_key? :model
          model_suggestions = model_suggestions.group(:model)
        else
          model_suggestions = model_suggestions.group(:make)
        end

        unless params[:model].blank?
          model_suggestions = model_suggestions.where('model LIKE ?', "%#{params[:model]}%")
        end

        unless params[:make].blank?
          model_suggestions = model_suggestions.where('make LIKE ?', "%#{params[:make]}%")
        end

        model_list = {model: [], make: []}

        model_suggestions.each do |car|
          model_list[:make] << car[:make].strip
          model_list[:model] << car[:model].strip
        end

        model_list[:make].uniq!
        model_list[:model].uniq!

        render json: model_list
      end
    end
  end

路线如下：

get :autocomplete, constraints: {format: 'json'}

这是我需要的 rspec 测试。我什么都想不出来。我对 Rails 和 TDD 很陌生。所以请不要对我这么苛刻

describe "GET #autocomplete" do
    before do
      FactoryGirl.create(:vehicle, make: "AUDI", model: "A4")
      FactoryGirl.create(:vehicle, make: "BMW", model: "M5")
      FactoryGirl.create(:vehicle, make: "BMW", model: "M3")
    end

    it "responds to with 2 makers" do
      get :autocomplete, :format => :json #giving param make: "BMW"
      # expect count 2 
    end

  end

我怎么能做到这一点？？？非常感谢:)

Answer 1

您可以检查响应的正文：

it "responds to with 2 makers" do
  get :autocomplete, :format => :json #giving param make: "BMW"
  res = JSON.parse(response.body)
  # assertions on res
end

如果您经常这样做，请考虑添加辅助方法或类似的东西以保持 DRY。