将数据库更改为 Postgres，现在 Rspec 抛出错误：can't find object by id

Question

我已经格式化了我的计算机，并且在重新安装 Rails 时将我的数据库更改为 postgres，现在一些之前通过的测试失败了，例如以下代码：

describe "Tickets" do
  subject { page }

  describe "when creating a new ticket successfully" do
    before do
      login_as_user
      visit new_ticket_path
      fill_in "Subject", with: "Test ticket"
      fill_in "Description", with: "This is a test ticket"
      select 'Billing', from: "ticket[category]" 
      click_button "Submit Ticket"
      TicketNotifier.drain
      Sidekiq::Extensions::DelayedMailer.drain
    end

    specify { last_email.to.should include("my.email@gmail.com") }
    it { should have_selector('title', text: "Ticket #1") }
    it { should have_content("ticket has been submitted successfully") }
  end
end

返回以下错误：

  10) Tickets when creating a new ticket successfully 
     Failure/Error: TicketNotifier.drain
     ActiveRecord::RecordNotFound:
       Couldn't find Ticket with id=366
     # ./app/workers/ticket_notifier.rb:5:in `perform'
     # ./spec/requests/blas_spec.rb:14:in `block (3 levels) in <top (required)>'

   # same error repeated a few times...

或者：

context "should not be able to edit other user's website" do
  before { visit edit_rental_path(1) }

  it { should have_selector('title', text: "Your Websites") }
  it { should have_selector(notice, text: "You do not have access to this domain.") }
end

抛出以下几个：

  2) Websites create a user with 2 websites log user out log in second user should not be able to edit other user's website 
     Failure/Error: before { visit edit_website_path(1) }
     ActiveRecord::RecordNotFound:
       Couldn't find Website with id=1
     # ./app/controllers/websites_controller.rb:116:in `correct_user'
     # ./spec/requests/websites_spec.rb:187:in `block (6 levels) in <top (required)>'

那么，它是否为每个it { should ... } 子句创建一个新对象？
即使我尝试以下类似的方法，它也无法通过 id 找到：

@site = Website.where(link: "http://google.com").first
visit website_path(@site)

造成这些问题的原因是什么？

更新

我已按照 depa 的建议清空了我的 gemset，现在我发布的第一个测试没有出现错误，即使我指定了 it { should have_selector('title', text: "Ticket #1") }。 #1 来自票证的 ID，因此出于某种原因，它正在像以前一样进行这些测试，但除非我将它们更改为，否则我仍然会在其他人身上遇到错误：

before do
   # create the ticket
   @ticket = Ticket.where(...).first
end

it { should have_selector('h2', text: "Ticket ##{@ticket.id}") }

而之前，如果我将其保留为 Ticket #1，则测试将通过。 postgres 和 sqlite 作为测试数据库的工作方式是否不同？

Answer 1

如果您使用 RVM，我会尝试重置您的 gem 环境，从 gem pristine rspec-rails 和 gem pristine capybara 开始，一直到 rvm gemset empty。