我在使用Rspec测试控制器的更新操作时遇到问题，我在做什么错? [英] I am having trouble testing my controller's update action using Rspec, what am I doing wrong?

问题描述

我正在尝试在控制器上测试更新操作的失败分支，但测试遇到问题.这就是我所拥有的，最后一次失败了

I am trying to test the failing branch of the update action on my controller but I am having trouble with the test. This is what I have and it fails on the last

describe "PUT 'article/:id'" do
.
.
.
  describe "with invalid params" do
    it "should find the article and return the object" do
      Article.stub(:find).with("1").and_return(@article)
    end

    it "should update the article with new attributes" do
      Article.stub(:update_attributes).and_return(false)
    end

    it "should render the edit form" do
      response.should render_template("edit")
    end
  end
end

关于为什么最后一部分无法渲染模板的任何想法?

Any ideas as to why the last part fails to render the template?

推荐答案

您不正确地分割了测试的各个部分.每次it调用实际上都是一个新示例，并且在每次调用之前/之后都将重置状态.

You're splitting up the parts of your test incorrectly. Each it call is actually a new example and the state is reset before/after each one.

您应该做的是:

describe "with invalid params" do
  before do
    @article = Article.create(valid_params_go_here)
  end

  it "should find the article and return the object" do
    put :update, { :id => @article.id, :article => { :title => "" } }
    response.should render_template("edit")
  end
end

通过这种方式，可以预先设置@article(尽管您可以真正使用 来模拟一个)，并且可以请求update动作和断言实际上是渲染了edit模板的例子全部发生在一个示例中.

By doing it this way, the @article is set up before hand (although you could use a mock one if you really wanted to) and the request to the update action and the assertion that it actually renders the edit template all happen in the one example.

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