ruby-on-rails - RSpec、Capybara、JavaScript 测试未正确回滚数据库

Question

因此，我正在测试我的 Ruby on Rails 项目，但我遇到了数据库问题。

我正在使用 Stripe，我正在为用户购买体验中的每个页面运行集成测试。不过，在完成测试之后，我的数据库并没有回滚!

这非常令人沮丧，因为每次测试后我都需要运行 rake db:test:prepare，这让我的速度变慢了。

下面是我的规范的代码:

require 'spec_helper'

describe "Subscription Pages" do
  subject { page }

  ...


  describe "purchase page" do

  ...

  describe "when not signed in" do
    it { should have_field "Email" }
    it { should have_field "Full Name" }
    it { should have_field "Password" }
    it { should have_field "Confirmation" }

    describe "and fills in the provided sign-up form as new user" do
      let(:some_user){ FactoryGirl.build(:user) }
      before do
        fill_in "Full Name",             with: some_user.name
        fill_in "Email",                 with: some_user.email
        fill_in "Password",              with: some_user.password
        fill_in "Confirmation",          with: some_user.password
        fill_in "card_number",           with: "4242424242424242"
        fill_in "card_code",             with: "123"
        select "January", from: "card_month"
        select (Date.today.year+1).to_s, from: "card_year"
      end

      ...

      describe "and submits with valid information", js: true do
        before do
          click_button submit
          sleep 5
        end

        it { should have_selector('div.alert.alert-success', text: 'Thank you for purchasing!') }
        it { should have_field "Words" } # because its the new puzzle page.
        it { should_not have_link "Buy Now!", href: plans_path }

        describe "and then tries to revisit the purchase page", js: true do
          before do
            visit purchase_path
          end

          # Should redirect to account screen with an alert
          # These tests pass when I do them myself but don't know why they are failing here
          specify { User.find_by_email(some_user.email).subscription.paid_user?.should be_true }

          it { should have_selector( 'title', text: "Account") }
          it { should_not have_field "card_number" }
          it { should have_selector('div.alert.alert-notify') }
          it { should_not have_link "Buy Now!", href: plans_path }
        end
      end
    end
  end
end

结束

如果我首先运行 rake db:test:prepare 然后运行我的测试，一切都很好。但是，当我再次运行测试时，由于数据库未回滚，我的用户模型出现“电子邮件已被接收”验证错误。

我在这里做错了什么？

Answer 1

请注意，虽然 :rack_test 是 Capybara 用于常规测试的默认驱动程序，但 javascript 测试是使用不同的驱动程序 (:selenium) 执行的，does not support transactional fixtures (without some workaround)。

如果这不能解决问题，在非 javascript block 中嵌套 javascript block (尤其是像访问/点击/填充这样的交互步骤)在我看来可能会产生不稳定的结果，所以我会避免这样做。

顺便说一句， sleep 不是一个好主意，您可能需要考虑 wait_until 和 wait_for_ajax。