我可以在：capybara之前使用吗？ [英] Can I use before :all with capybara?

问题描述

我有一个类似的描述块：

 描述文档以
为主题{页面} 
 let（：course）{FactoryGirl.create（：course）} 
描述新建，然后
进行
访问new_course_document_path（course）
 fill_in名称，带有： TestDocument 
 attach_file原始文档，＃{Rails.root} /spec/fixtures/03_GUI_concurrency.pdf 
结束
它{应该具有_selector（'title'，文本： 上传文档）} 
它{应该具有 _upor（'h1'，文本：上传文档）}} 
描述单击上传时在{click_button上传文档}之前执行
 
它应具有文档名称做
 subject.should have_selector（'p'，文本： TestDocument）
结束
 
它应具有22 pages do 
 subject.should have_selector（'。page'，count：22）
 end 
 
描述在访问课程页面时 
在{访问之前库尔se_path（course）} 
 it {应该具有 _selector'li，文本： TestDocument} 
结束
结束
结束
  

该测试非常昂贵，因为在保存文档方面进行了大量工作。很好，但由于实际上载了3次，因此速度甚至更慢。因此，显而易见的事情是将before块设置为before：all块-但是，当我这样做时，只有第一个{}块可以正确执行，而随后的块将在空页面上执行，因此它们将失败。 / p>

之前：所有块都应该与水豚一起工作，如果是的话，我在这里做什么错了？

解决方案

Capybara 重置会话在每个示例运行之后，因此，当您将访问new_course_document_path（course）到之前的（：all）块中时，从第二个示例开始，您什么都没需要访问。

我建议仅运行您正在处理的测试。这可以通过RSpec 标记选项或 guard-rspec ，它可以为您节省大量时间

I have a describe block like this:

describe "Documents" do
  subject { page }
  let (:course) { FactoryGirl.create(:course) }
  describe "new" do
    before do
      visit new_course_document_path(course)
      fill_in "Name", with: "TestDocument"
      attach_file "Original document", "#{Rails.root}/spec/fixtures/03_GUI_concurrency.pdf"
    end
    it { should have_selector('title', text:"Upload document")}
    it { should have_selector('h1', text:"Upload document")}
    describe "when clicking upload" do
      before { click_button "Upload Document" }
      it "should have the document name" do
        subject.should have_selector('p', text: "TestDocument")
      end

      it "should have 22 pages" do
        subject.should have_selector('.page', count: 22)
      end

      describe "when visiting the course page" do
        before { visit course_path(course) }
        it { should have_selector 'li', text: "TestDocument"}
      end
    end
  end

The test is quite expensive since significant work is done on saving the document. That's fine, but it's even slower since it's actually doing that upload 3 times. So, the obvious thing to do is to make the before blocks into before :all blocks - but when I do that, only the first it {} block is executed correctly and the ones afterward are executing on an empty page so they fail.

Are before :all blocks supposed to work with capybara, and if so what am I doing wrong here?

解决方案

Capybara resets session after each example run, so when you moved visit new_course_document_path(course) into before (:all) block, you had nothing to visit starting from a second example.

I would recommend to run only that tests you're working on. This could be achieved with a RSpec tag option or guard-rspec, and it'll save you a LOT of time.

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