save_and_open_page无法与capybara 2.0一起使用吗？ [英] save_and_open_page not working with capybara 2.0?
问题描述
我刚刚将水豚更新为2.0，并且我所有的save_and_open_page调用都返回一个没有样式的html页面。它的样式表链接正确位于页面顶部。当我恢复到水豚1.3时，样式再次起作用。任何人都知道如何解决此问题和/或问题是什么？
谢谢，
戴夫
更新1。 b Capybara Webkit问题
指向： capybara-screenshot
它涉及使用capybara截屏的gem来获取页面外观的屏幕截图。将其与生成html的save_and_open_page结合使用时，您可以看到它的外观并查看HTML。
save_and_open_page
Capybara :: Screenshot.screenshot_and_open_image
如果我能得到 Capybara :: Screenshot.screenshot_and_save_page 起作用，那么我认为我可能有解决方案（如果名称表示我认为确实可以采取的措施）。但是，当我尝试时，我得到无法加载此类文件-capybara / util / save_and_open_page
更新2。
！请稍等，screenshot_and_open_image现在不起作用（未创建或显示png图像）。 !!
更新3。
测试应用程序：
我创建了一个测试应用程序，并将其发布在Github上的 test_capybara_screenshot 上。
>当我在开发中运行此测试应用程序时，该页面显示了耀眼的红色背景样式。当我运行测试时，唯一对我有用的是save_and_open_page，除了没有样式。
注意，当我运行任何测试时，都会收到以下警告：
警告：Nokogiri是针对2.7.8的LibXML构建的，但已动态加载2.7.3
rspec测试的详细信息：
- save_and_open_page带有无聊的白色背景（没有
- screenshot_and_open_image返回以下错误：
机架：：测试水豚驱动程序无法输出屏幕截图。跳过。
打开失败/~/Documents/experiments/test_capybara_screenshot/tmp/capybara/screenshot-2012-11-26-07-48-29.png带有选项{}：否找到的应用程序可以处理'/~/Documents/experiments/test_capybara_screenshot/tmp/capybara/screenshot-2012-11-26-07-48-29.png'
- screenshot_and_save_page返回：
后钩异常发生
LoadError：无法加载此类文件-capybara / util / save_and_open_page
发生在~/.rvm/gems/ruby-1.9.3-p125@global/gems/activesupport-3.2。 6 / lib / active_support / dependencies.rb：251：in`require'
经过一些博客浏览和挖掘，我能够解决save_and_open_page的问题。我从项目中删除了capybara_screenshot宝石。您可以在 github test_capybara_screenshot存储库上看到我的工作代码。我发现的解决方案使用了一些我在 capybara github网站上找到的指针。 / p>
假设：
- 您正在使用rspec进行测试。
- 您的应用已配置为使用资产管道。
我要做的第一件事就是设置它以便将资产预编译到测试目录中。为此，我将以下代码添加到 RSpec.configure 循环内的 spec / spec_helper.rb 文件中： / p>
config.before（scope =：suite）do
％x [捆绑执行耙资产：预编译]
end
我在配置中指定资产的预编译位置/environments/test.rb 文件：
config.assets.prefix = assets_test＃个位置测试public / assets_test目录中的资产
config.action_controller.asset_host = file：//＃{:: Rails.root} / public
这使得测试资产独立于开发资产，并且仅在测试套件运行期间生成。
如果执行此操作，则可能需要让git忽略 / public / assets * 目录。
I just had my capybara updated to 2.0, and all of my save_and_open_page calls return an html page without styling. It has the style sheets links properly at the top of the page. When I revert back to capybara 1.3, the styles work again. Anyone know how to fix this, and/or what the problem is?
thanks, Dave
Update 1.
hack:
I have found a reasonable way to get around the problem following the links recommended by simonmorley: Capybara Webkit problem which points to: capybara-screenshot
It involves using the capybara-screenshot gem to get a screenshot of what the page looks like. When you combine it with the save_and_open_page, which generates the html, you can see what it looks like, and see the HTML.
save_and_open_page
Capybara::Screenshot.screenshot_and_open_image
If I could get Capybara::Screenshot.screenshot_and_save_page to work, then I think that I might have a solution (if the name implies the action I think it does). However, when I try it, I get cannot load such file -- capybara/util/save_and_open_page
Update 2.
!! wait, the screenshot_and_open_image is not working now (no png image created or displayed). !!
Update 3.
Test App:
I created a test app, and posted it at test_capybara_screenshot on Github.
When I run this test app in development, the page come up with the blaring red background style displayed. When I run the tests, the only thing that works for me is the save_and_open_page, except there is no styling.
Note, when I run any tests, I get the following warning:
WARNING: Nokogiri was built against LibXML version 2.7.8, but has dynamically loaded 2.7.3
Details of the rspec test:
- The save_and_open_page comes up with a boring white background (no styling).
- the screenshot_and_open_image returns with the error:
Rack::Test capybara driver has no ability to output screen shots. Skipping.
Failure in opening /~/Documents/experiments/test_capybara_screenshot/tmp/capybara/screenshot-2012-11-26-07-48-29.png with options {}: No application found to handle '/~/Documents/experiments/test_capybara_screenshot/tmp/capybara/screenshot-2012-11-26-07-48-29.png'
- The screenshot_and_save_page returns:
An error occurred in an after hook
LoadError: cannot load such file -- capybara/util/save_and_open_page occurred at ~/.rvm/gems/ruby-1.9.3-p125@global/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `require'
I was able to fix the problem with save_and_open_page after some blog browsing and digging. I have dropped the capybara_screenshot gem from my project. You can see my working code on my github test_capybara_screenshot repository. The solution that I figured out uses some pointers that I found on the capybara github site.
Assumptions:
- You are using rspec for testing.
- Your app is already configured for using the asset pipeline.
The first thing that I do is set it up so that assets are precompiled into a test directory. I do this by adding the following code into the spec/spec_helper.rb file within the RSpec.configure loop:
config.before (scope = :suite) do
%x[bundle exec rake assets:precompile]
end
I specify where the assets are pre-compiled to in the config/environments/test.rb file:
config.assets.prefix = "assets_test" # place test assets in public/assets_test directory
config.action_controller.asset_host = "file://#{::Rails.root}/public"
This makes it so that the test assets are independent of the development assets, and are only generated during a test suite run.
If you do this, you will probably want to have git ignore the /public/assets* directories.
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