无头Firefox Watir-WebDriver上的Net :: ReadTimeout

Question

我今天开始遇到大量这些错误:

Net::ReadTimeout (Net::ReadTimeout)
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/protocol.rb:158:in `rescue in rbuf_fill'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/protocol.rb:152:in `rbuf_fill'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/protocol.rb:134:in `readuntil'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/protocol.rb:144:in `readline'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http/response.rb:39:in `read_status_line'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http/response.rb:28:in `read_new'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http.rb:1405:in `block in transport_request'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http.rb:1402:in `catch'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http.rb:1402:in `transport_request'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http.rb:1375:in `request'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http.rb:1368:in `block in request'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http.rb:851:in `start'
      /usr/local/rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/net/http.rb:1366:in `request'

我正在运行无头(通过无头宝石)Watir-WebDriver在Firefox 21,Ubuntu服务器上运行.这是活跃的宝石束:

Gems included by the bundle:
  * builder (3.2.2)
  * bundler (1.3.5)
  * childprocess (0.3.9)
  * cucumber (1.3.2)
  * cwtestgen (0.1.6)
  * data_magic (0.14)
  * diff-lcs (1.2.4)
  * faker (1.1.2)
  * ffi (1.8.1)
  * gherkin (2.12.0)
  * headless (1.0.1)
  * i18n (0.6.4)
  * multi_json (1.7.5)
  * page-object (0.8.10)
  * page_navigation (0.9)
  * require_all (1.2.1)
  * rspec (2.13.0)
  * rspec-core (2.13.1)
  * rspec-expectations (2.13.0)
  * rspec-mocks (2.13.1)
  * rubyzip (0.9.9)
  * selenium-webdriver (2.33.0)
  * syntax (1.0.0)
  * thor (0.18.1)
  * watir-webdriver (0.6.4)
  * watir-webdriver-performance (0.2.2)
  * websocket (1.0.7)
  * yml_reader (0.2)

我甚至不知道从哪里开始解决这个问题.超时是随机的.当我在OS X(不是无头)上的Firefox 21上运行这些测试时,它们不会发生.有谁之前经历过这个吗？任何和所有的想法非常感谢 - 谢谢!

Answer 1

我在别人的机器上看到过这个，并花了一点时间对其进行诊断。

在这种特殊情况下，问题似乎是 Ruby 版本管理器的一些混乱，这意味着为旧版本 Ruby 编译的一些 gem 被拾取了。

我们吹掉了他们的宝石，重新安装了宝石，一切又开始可靠地工作了。

这可能不是您的问题，但对其他人来说值得注意。如今， Ruby 版本管理变得越来越容易，但仍然很容易让事情变得混乱。