ruby-on-rails-3 - 数据库清理器不清理一个 cucumber 场景

Question

所以我的团队正在使用 Cucumber、Rspec 和使用这些测试框架所需的所有 gem 来开发我们的 Rails 应用程序(一个调查和精简版电子记录系统)。我正在设置 Jenkins CI 服务器，并希望在我们的测试、开发和暂存环境中标准化我们的数据库(我们最终选择了 MySQL)。

将测试环境从 SQlite 切换到 MySQL 后，我们发现了一些与缓存相关的测试错误，我们通过使用相对 ID 而不是硬编码来解决这些错误。示例:

describe "#instance_method" do
  before(:each) do
  @survey = FactoryGirl.create(:survey)
  @question_1 = FactoryGirl.create(:question)
  @question_2 = FactoryGirl.create(:question)
  ....
  end
  context "question has no requirements" do
    it "should match" do
      # below breaks under MySQL (and postgres), but not SQlite
      expect { @survey.present_question?(2) }.to be_true
      # always works
      expect { @survey.present_question?(@question_2.id) }.to be_true
    end
  end
end

解决了这个失败的规范后，我解决了一些不相关的 ajax 问题，这些问题一直困扰着我们的测试套件。以为我终于掌握了测试的艺术，我自信地运行了 rake。我遇到了这个不友好的景象:

当然 cucumber features/presenting_default_questions.feature 在隔离运行时会下雨。

失败场景:

@javascript
Feature: Dynamic Presentation of Questions
  In order to only answer questions that are relevant considering previously answered      questions
  As a patient
  I want to not be presented questions that illogical given my previously answered question on the survey

  Scenario: Answering a question that does not depend on any other questions
    Given I have the following questions:
      | prompt             | datatype | options | parent_id | requirement |
      | Do you like cars?  | bool     |         |           |             |
      | Do you like fruit? | bool     |         |           |             |
    When I visit the patient sign in page
    And I fill out the form with the name "Jim Dog", date of birth "1978-03-30", and gender "male"
    And I accept the waiver
    Then I should see the question "Do you like cars"
    When I respond to the boolean question with "Yes"
    Then I should see the question "Do you like fruit?"
    When I respond to the boolean question with "No"
    Given I wait for the ajax request to finish
    Then I should be on the results page

相关步骤:

Then(/^I should be on the results page$/) do
  # fails under ``rake`` passes when run in isolation
  current_path.should == results_survey_path(1)
end

Then(/^I should be on the results page$/) do
  # passes in isolation and under ``rake``
  current_path.should == results_survey_path(Survey.last.id)
end

除了使用 Capybara.javascript_driver = :webkit 之外，cucumber/database cleaner 配置未从 rails g cucumber:install 中修改。

似乎失败的 rspec 和 cucumber 测试都遇到了同样的索引问题。虽然上面提出的解决方案有效，但它非常笨拙，并且回避了为什么简单的绝对索引不起作用的问题(在每个场景和功能之间清理了所有数据库之后)。我的测试有问题吗？使用 database_cleaner？

如果更多代码有帮助，请告诉我!

相关的 gem 版本:

• 事件模型 (3.2.14)
• cucumber (1.3.6)
• cucumber 导轨 (1.3.1)
• 数据库清理器 (1.0.1)
• capybara (2.1.0)
• capybara -webkit (1.0.0)
• mysql2 (0.3.13)
• rspec (2.13.0)

Answer 1

问题似乎是您缺少Cucumber 场景的database_cleaner 代码。

你提到你有 RSpec 场景的 database_cleaner 代码，但你似乎缺少 Cucumber 的类似代码的 env.rb:

begin
  require 'database_cleaner'
  require 'database_cleaner/cucumber'

  DatabaseCleaner.strategy = :truncation
rescue NameError
  raise "You need to add database_cleaner to your Gemfile (in the :test group) if you wish to use it."
end

Around do |scenario, block|
  DatabaseCleaner.cleaning(&block)
end

你有这个代码吗？