6

在我开始尝试使用 Capybara-Webkit 与依赖于 Javascript 的界面元素进行交互之前，我的 Rspec + Capybara 集成测试运行良好。

当我尝试使用 Capybara-Webkit 时，我在save_and_open_line下面得到空白页。为什么？

/spec/features/area_spec.rb：

require 'spec_helper'
describe "Area" do
  ...
  describe "Admin" do
    ...  
    before(:each) do
      Capybara.current_driver = :webkit
      @virginia = User.create(
        :username => "Virginia", 
        :password => "password", 
        :password_confirmation => "password", 
        :email => "example@example.com")
      @admin = Role.create(:name => "admin")    
      @assignment = Assignment.create(user_id: @virginia.id, role_id: @admin.id)
      visit login_path
      fill_in 'user_session_username', :with => @virginia.username
      fill_in 'user_session_password', :with => @virginia.password
      click_on 'submit_user_session'
      visit report_path(@report)
      save_and_open_page
      page.find('#nav_reports').trigger(:mouseover)
      ...
    end
    ...
  end
  ...
end

/spec/spec_helper.rb：

require 'rubygems'
require 'spork'
require 'database_cleaner'
Spork.prefork do
end
Spork.each_run do
end
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'capybara/rspec'
require 'capybara/rails' 
require 'capybara/dsl' 
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
RSpec.configure do |config|
  config.mock_with :rspec
  config.fail_fast = true
  config.fixture_path = "#{::Rails.root}/spec/fixtures"
  config.before(:each) { ActionMailer::Base.deliveries.clear }
  config.use_instantiated_fixtures = false 
  config.include(Capybara, :type => :integration)
  Capybara.javascript_driver = :webkit
  config.use_transactional_fixtures = false
  config.before(:suite) do
    DatabaseCleaner.clean_with :truncation
  end
  config.before(:each) do
    if example.metadata[:js]
      DatabaseCleaner.strategy = :truncation
    else
      DatabaseCleaner.strategy = :transaction
    end
    DatabaseCleaner.start
  end
  config.after(:each) do
    DatabaseCleaner.clean
  end
end

当我从中删除Capybara.current_driver = :webkit（area_spec.rb但将 Webkit 相关代码保留在 中spec_helper.rb）时，生成的页面save_and_open_page不为空，但在 Rspec 命令行中出现以下错误：

Failure/Error: page.find('#nav_reports').trigger(:mouseover)
     Capybara::NotSupportedByDriverError:
       Capybara::NotSupportedByDriverError

最初我尝试添加:js => :true到 before block ... do，但 Rspec 一直拒绝我的语法。当我添加:js => true到it ... do block要被before ... do块覆盖的第一个时，我仍然在 处得到一个空白页save_and_open_page，但是 Rspec 命令行中的错误更改为：

Failure/Error: page.find('#nav_reports').trigger(:mouseover)
     Capybara::Webkit::NodeNotAttachedError:
       Capybara::Webkit::NodeNotAttachedError

当我在文件Capybara.javascript_driver = :webkit中向上移动一个级别时，我得到了同样的错误。spec_helper.rbRspec.configure do

当我从before ... do块中剪切每一行并将其粘贴到it ... do block要覆盖的第一行时，我得到了同样的错误。

当我设置config.use_transactional_fixtures = true和删除所有与 Webkit 相关的代码时，规范工作，当然 for 除外page.find('#nav_reports').trigger(:mouseover)，它需要一个 Javascript 驱动程序。

更新：我page.current_path.should == report_path(@report)在之前插入save_and_open_page并发现有关 Capybara-Webkit 的某些东西正在阻止我visit report_path(@report)的工作。（当我不尝试使用 Capybara-Webkit 测试依赖于 Javascript 的界面元素时，它工作正常。）错误代码是：

 Failure/Error: page.current_path.should == report_path(@report)
       expected: "/reports/3"
            got: nil (using ==)

进一步更新：我发现当我使用 Capybara-Webkit 时，Rspec 很难找到@report对象，即使我将我的@report = Report.create(...)语句直接移动到访问之前的行report_path(@report)。完整的测试日志如下：

 Marker - 19/12/2012 11:55:45 AM
Connecting to database specified by database.yml
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Served asset /application.css - 200 OK (269ms)
Started GET "/assets/application.js" for 127.0.0.1 at 2012-12-19 11:56:31 +1100
Served asset /application.js - 200 OK (1611ms)
Started GET "/assets/subtle_dots3.png" for 127.0.0.1 at 2012-12-19 11:56:33 +1100
Served asset /subtle_dots3.png - 200 OK (75ms)
Started GET "/assets/background.png" for 127.0.0.1 at 2012-12-19 11:56:33 +1100
Served asset /background.png - 200 OK (56ms)
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Served asset /stack-of-papers3.png - 200 OK (10ms)
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Served asset /sample-chart.png - 200 OK (3ms)
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ActiveRecord::RecordNotFound - Couldn't find Report with id=1:
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  /Users/steven/.rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
  /Users/steven/.rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
  /Users/steven/.rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'

  [1m[36m (1.7ms)[0m  [1mALTER TABLE "references" ENABLE TRIGGER ALL;ALTER TABLE "variants" ENABLE TRIGGER ALL;ALTER TABLE "veracities" ENABLE TRIGGER ALL;ALTER TABLE "goods" ENABLE TRIGGER ALL;ALTER TABLE "values" ENABLE TRIGGER ALL;ALTER TABLE "orders" ENABLE TRIGGER ALL;ALTER TABLE "reports" ENABLE TRIGGER ALL;ALTER TABLE "roles" ENABLE TRIGGER ALL;ALTER TABLE "users" ENABLE TRIGGER ALL;ALTER TABLE "areas" ENABLE TRIGGER ALL;ALTER TABLE "schema_migrations" ENABLE TRIGGER ALL;ALTER TABLE "ijoins" ENABLE TRIGGER ALL;ALTER TABLE "fields" ENABLE TRIGGER ALL;ALTER TABLE "footnotes" ENABLE TRIGGER ALL;ALTER TABLE "gjoins" ENABLE TRIGGER ALL;ALTER TABLE "heuristics" ENABLE TRIGGER ALL;ALTER TABLE "assignments" ENABLE TRIGGER ALL;ALTER TABLE "categories" ENABLE TRIGGER ALL;ALTER TABLE "industries" ENABLE TRIGGER ALL;ALTER TABLE "markets" ENABLE TRIGGER ALL;ALTER TABLE "mjoins" ENABLE TRIGGER ALL[0m
4

4 回答 4

6

可能不是正确的答案，但以防万一其他人像我一样用谷歌搜索这个答案，寻找想法：

我忘记了visit网址前面的正斜杠。出于某种原因，默认机架驱动程序对此很好，但我的 JS 驱动程序不是（capybara-webkit 和 poltergeist）。

于 2014-04-08T14:20:32.823 回答
0

我有一个类似的问题，仍然试图找出确切的问题，但使用page.visit而不是只是visit似乎有帮助。

于 2013-03-29T13:28:07.653 回答
0

升级到capybara-webkit1.5.1 为我解决了这个问题。参见thoughtbot/capybara-webkit#724

于 2015-05-18T19:05:56.127 回答
0

我们正在使用 capybara-webkit 1.3.1，capybara 2.1.0

由于返回了 304 状态代码，我看到了这一点。我认为 Capybara Webkit 出于某种原因没有呈现页面（可能是由于非 2xx 代码）并且会返回一个空白页面。

一旦我将标头设置为不可缓存，那么这个问题在我们的情况下就消失了。

于 2015-07-15T17:45:16.080 回答