ruby-on-rails - Controller 中的实例变量是否传递到 Rails 中的规范？

Question

出于某种原因，我的规范没有通过。看来 @categories 没有达到规范。

这是 Controller :

class CategoriesController < ApplicationController
  def index
    @categories = Category.all
  end
end

我的规范:

require 'spec_helper'

describe CategoriesController do

  describe "GET #index" do
    category = FactoryGirl.create(:category)
    subject { get :index }
    it { @categories.should include category }
  end

end

错误:

Failure/Error: @categories.should include category
     NoMethodError:
       undefined method `include?' for nil:NilClass

Answer 1

不，但您可以使用 assigns 访问它们规范助手:

require 'spec_helper'

describe CategoriesController do

  describe "GET #index" do
    category = FactoryGirl.create(:category)
    subject { get :index }
    it { assigns(:categories).should include category }
  end

end