Question

我有一系列相当复杂的测试，下面用更简单的形式再现：

# Credit cards that should succeed; totally opening to other ways of running this loop, if it's what's causing the error! It's just the only thing I thought of to be DRY
["2134", "1234"].each do |card|
  describe "enter card number", job: true do
    before do
      fill_in "card_number", with: card
    end

    it "should create a record" do
      Record.count.should == 1
    end
  end
end

# Credit card that should fail
# Just the one number here
  describe "enter card number" do
    before do
      fill_in "card_number", with: "5678"
    end

    it "should create a record" do
      Record.count.should == 0
    end
  end

在配置中我需要关闭use_transactional_fixtures，因为这些是基于javascript的测试，而事务性设备并不适合我。所以我尝试像这样实现数据库清理器（使用Sucker Punch gem指令https://github.com/brandonhilkert/sucker_punch，因为我最终还需要测试gem）：

  # Database cleaner set up below
  config.before(:each) do
    DatabaseCleaner.strategy = :transaction
  end

  # Clean up all jobs specs with truncation
  config.before(:each, job: true) do
    DatabaseCleaner.strategy = :truncation
  end

  config.before(:each) do
    DatabaseCleaner.start
  end

  config.after(:each) do
    DatabaseCleaner.clean
  end

问题是这没有帮助：

对于应该成功的信用卡（每个循环），第一个通过，但后续全部失败，因为Record.count继续构建
对于应该失败的信用卡，它会失败，因为在测试运行时，测试数据库中已经有Records

基本上唯一的方法就是在before(:all)强制清理（before和after都没有做过）

 # Credit cards that should succeed
    ["2134", "1234"].each do |card|
      describe "enter card number", job: true do

        before(:all) do
          Record.destroy_all
        end

        before do
          # did not work to put the destroy here 
          fill_in "card_number", with: card
        end

        it "should create a record" do
          Record.count.should == 1
        end

        # did not work to put the destroy here 
        # after do
        #  Record.destroy_all
        # end
      end
    end

# Credit card that should fail
  describe "enter card number" do
    before do
      # On this one, the Record.destroy_all could have gone anywhere
      Record.destroy_all 
      fill_in "card_number", with: "5678"
    end

    it "should create a record" do
      Record.count.should == 0
    end
  end

如何正确设置数据库清理程序？或者我应该做before(:all)？

Answer 1

首先，您使用的是哪个版本的database_cleaner？

如果你看一下gem的文档，你会看到不同的东西：

  config.before(:suite) do
    DatabaseCleaner.strategy = :transaction
    DatabaseCleaner.clean_with(:truncation)
  end

  config.around(:each) do |example|
    DatabaseCleaner.cleaning do
      example.run
    end
  end

此外，我不确定这是否会按预期运作：

   ["2134", "1234"].each do |card|
      describe "enter card number", job: true do
        ...
      end
    end

我会找到一种不同的方法来测试这两种情况。是否真的有必要输入两个这样的数字？

RSpec数据库清理程序不会在测试之间发生

1 个答案: