Question

我有一个显示欢迎信息或视频的视图，具体取决于是否定义了@video。我正在尝试为视图编写一些测试，但我似乎无法弄清楚如何定义@video的定义。

以下是观点：

<div class="container" id="contents">
  <% unless defined? @video %>
    <div class="hero-unit">
      <h1>
        Khan-O-Tron<br />
        <small>Khan Academy has a lot of great videos. So many, in fact, that choosing just one is kind of annoying. Click the button below and let us choose one for you!</small>
      </h1><br />
      <a class="btn btn-large btn-success" href="/random">Get Started By Watching A Tutorial</a>
    </div>
  <% else %>
    <div class="hero-unit">
      <h1><%= @video.title %><br /> <small><%= @video.description %></small></h1>
      <br />
      <%= raw @video.get_embed_code %>
    </div>
  <% end %>
</div>

以下是我的测试：

require 'spec_helper'

describe "[Static Pages]" do
  describe "GET /" do
    before { visit root_path }
    subject { page }

    describe "#hero-unit" do
      describe "with @video not defined" do
        it "should have an H1 tag with the text 'Khan-O-Tron'." do
          should have_selector ".hero-unit h1", text: "Khan-O-Tron"
        end
        it "should have an H1 small tag with a description of our product." do
          should have_selector ".hero-unit h1 small", text: "Khan Academy has a lot of great videos. So many, in fact, that choosing just one is kind of annoying. Click the button below and let us choose one for you!"
        end
        it "should have a link to /random with the text 'Get Started By Watching A Tutorial'" do
          should have_link "Get Started By Watching A Tutorial", href: "/random"
        end
      end
      describe "with @video defined" do

        before { @video = FactoryGirl.create(:video) }

        it "should have an H1 tag with the video's title" do
          should have_selector ".hero-unit h1", text: @video.title
        end
        it "should have an H1 small tag with the video's description" do
          should have_selector ".hero-unit h1 small", text: @video.description
        end
        it "should have the video embedded in the page" do
          should have_selector "iframe"
        end
      end
    end
  end
end

为什么我使用@video定义的FactoryGirl变量不会传递给视图？

Answer 1

那是因为您在定义visit root_path之前正在执行@video。在get root_path块中的@video = ....行后面添加before，它应该有效。

顺便说一句，正确的方法是使用rspec助手：

在第一个before块上方添加此内容：

let(:video) { FactoryGirl.create(:video) }

然后在您设置实例变量的第二个before块中，将行替换为：

assign(:video, video)

最后在您的示例中，将@video替换为video。

更多信息here。

使用FactoryGirl创建的Rails实例变量未在视图中定义

1 个答案: