RailsTutorial - 第 8.4.3 章 - 在集成测试中添加用户后未清除测试数据库 [英] RailsTutorial - chapter 8.4.3 - Test database not clearing after adding user in integration test

问题描述

我被这个难住了.

到目前为止，本教程中的所有内容都进行得很顺利，但是当我将这段代码添加到我的/spec/requests/users_spec.rb 文件中时，事情就开始变糟了:

Everything on the tutorial has gone smoothly so far, but when I add this chunk of code to my /spec/requests/users_spec.rb file, things start to go south:

describe "success" do

  it "should make a new user" do
    lambda do
      visit signup_path
        fill_in "Name",         :with => "Example User"
        fill_in "Email",        :with => "[e-mail]"
        fill_in "Password",     :with => "foobar"
        fill_in "Confirmation", :with => "foobar"
        click_button
        response.should have_selector("div.flash.success",
                                      :content => "Welcome")
        response.should render_template('users/show')
        end.should change(User, :count).by(1)
      end
    end

如果我清除了测试数据库( rake db:test:prepare )，所有的测试都会通过.但是如果我再次运行测试，它们会失败，因为测试数据库没有清除上面代码添加的记录.

If i clear the test database ( rake db:test:prepare ), all of the tests pass. But if i run the tests again, they fail because the test database doesn't clear the record that the code above added.

我在谷歌上搜索了很多，我发现的大部分内容要么指向 config.use_transactional_fixtures 设置，要么指向代码中的嵌套问题.

I've googled quite a bit, and most of what i found pointed either to the config.use_transactional_fixtures setting, or to a nesting issue in the code.

我很确定这两种情况对我来说都不是.这是我的 spec_helper.rb 文件:

I'm pretty sure that neither of these is the case for me. Here is my spec_helper.rb file:

require 'rubygems'
require 'spork'

Spork.prefork do
  ENV["RAILS_ENV"] ||= 'test'
  require File.expand_path("../../config/environment", __FILE__)
  require 'rspec/rails'

Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

  RSpec.configure do |config|
    config.mock_with :rspec
    config.fixture_path = "#{::Rails.root}/spec/fixtures"
    config.use_transactional_fixtures = true

    # Needed for Spork
    ActiveSupport::Dependencies.clear
  end 

end

Spork.each_run do
  load "#{Rails.root}/config/routes.rb"
  Dir["#{Rails.root}/app/**/*.rb"].each { |f| load f } 
end

这是我的 users_spec.rb:

and here is my users_spec.rb:

describe "Users" do

  describe "signup" do

    describe "failure" do

      it "should not make a new user" do
        lambda do
          visit signup_path
          fill_in "Name",         :with => ""
          fill_in "Email",        :with => ""
          fill_in "Password",     :with => ""
          fill_in "Confirmation", :with => ""
          click_button
          response.should render_template('users/new')
          response.should have_selector("div#error_explanation")
        end.should_not change(User, :count)
      end 
    end 


    describe "success" do

      it "should make a new user" do
        lambda do
          visit signup_path
          fill_in "Name",         :with => "Example User"
          fill_in "Email",        :with => "[e-mail]"
          fill_in "Password",     :with => "foobar"
          fill_in "Confirmation", :with => "foobar"
          click_button
          response.should have_selector("div.flash.success",
                                        :content => "Welcome")
          response.should render_template('users/show')
        end.should change(User, :count).by(1)
      end 
    end 
  end 
end

有什么想法吗?谢谢.

有了 mpapis 的答案，我就可以完成这项工作.这是我更新的 spec/requests/user_spec.rb 文件:

With mpapis answer, i was able to get this working. Here is my updated spec/requests/user_spec.rb file:

require 'spec_helper'
require 'database_cleaner'
DatabaseCleaner.strategy = :truncation

describe "Users" do

  describe "signup" do

    describe "failure" do

      it "should not make a new user" do
        lambda do
          visit signup_path
          fill_in "Name",         :with => ""
          fill_in "Email",        :with => ""
          fill_in "Password",     :with => ""
          fill_in "Confirmation", :with => ""
          click_button
          response.should render_template('users/new')
          response.should have_selector("div#error_explanation")
        end.should_not change(User, :count)
      end 
    end 


    describe "success" do

      it "should make a new user" do
        lambda do
          visit signup_path
          fill_in "Name",         :with => "Example User"
          fill_in "Email",        :with => "[e-mail]"
          fill_in "Password",     :with => "foobar"
          fill_in "Confirmation", :with => "foobar"
          click_button
          response.should have_selector("div.flash.success",
                                        :content => "Welcome")
          response.should render_template('users/show')
        end.should change(User, :count).by(1)
        DatabaseCleaner.clean
      end 
    end 
  end 
end

推荐答案

就我而言，测试视图使数据库处于不清楚状态，您应该尝试 https://github.com/bmabey/database_cleaner 用于黄瓜测试后的清洁，但主页上提供了 Rspec 的示例.

As far as I'm concerned testing views leaves database in unclear state, you should try https://github.com/bmabey/database_cleaner it is used for cleaning after cucumber tests, but an example for Rspec is available on the main page.

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