rspec中的赋值是什么意思

问题描述

该行代码有什么作用?

assigns(:articles).should eq([article])

在以下rspec中

  describe "GET #index" do
    it "populates an array of articles" do
      article = Factory(:article)
      get :index
      assigns(:articles).should eq([article])
    end

    it "renders the :index view" do
      get :index
      response.should render_template :index
    end
  end

推荐答案

assigns与在控制器动作(创建并分配给视图)中创建的实例变量相关.

assigns relates to the instance variables created within a controller action (and assigned to the view).

要回答您的评论意见，我想是

to answer your remark in comments, I guess that:

• 1)您的索引操作类似于@articles = Articles.all(但我希望您使用分页)

• 1) your index action looks like @articles = Articles.all (I hope you use pagination though)

2)在上面的spec块之前，您已经在db中创建了一篇文章(或者希望您在db中保留db查询)

2) prior to the spec block above, you have one article created in db (or I hope you stub db queries in db)

1 + 2 => @articles应该包含一篇文章，这是您的规格期望

1 + 2 => @articles should contain one article, that's your spec expectation

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