Question

我正在使用Capybara（Selenium驱动程序）访问网站上的某些页面。我只需点击数组中的每个项目，然后单击后退按钮。它很好，但每次经过一些迭代后它就会破坏。这是代码：

all(:xpath, '//table[@class="griglia_bordata"]//tr[td]/td/a[1]').each do |a|
  a_js_functions << a[:href]
end
a_js_functions.each do |js_for_model|
  puts js_for_model
  page.execute_script js_for_model
  find(:xpath, "//a[text()='Check availability']").click
  puts find(".testo_grande_blu_B").text
  puts "--------------------------------------------"
  find(:xpath, "//a[text()='Back']").click
end

我有输出：

javascript：selectModel（＆＃39; 130254＆＃39;）样式：RB2132 -------------------------------------------- javascript：selectModel（＆＃ 39; 309257＆＃39;）风格：RB2140 -------------------------------------------- javascript：selectModel（＆＃ 39; 68238＆＃39;）风格：RB3016 -------------------------------------------- javascript：selectModel（＆＃ 39; 68248＆＃39;）风格：RB3025 -------------------------------------------- javascript：selectModel（＆＃ 39; 68293＆＃39;）风格：RB3026 -------------------------------------------- javascript：selectModel（＆＃ 39; 68320＆＃39;）风格：RB3044 -------------------------------------------- javascript：selectModel（＆＃ 39; 68460＆＃39） /usr/lib/ruby/1.9.1/net/protocol.rb:146:in rescue in rbuf_fill': Timeout::Error (Timeout::Error) from /usr/lib/ruby/1.9.1/net/protocol.rb:140:in rbuf_fill＆＃39;从 /usr/lib/ruby/1.9.1/net/protocol.rb:122:in readuntil' from /usr/lib/ruby/1.9.1/net/protocol.rb:132:in readline＆＃39;从 /usr/lib/ruby/1.9.1/net/http.rb:2562:in read_status_line' from /usr/lib/ruby/1.9.1/net/http.rb:2551:in read_new＆＃39;从 /usr/lib/ruby/1.9.1/net/http.rb:1319:in block in transport_request' from /usr/lib/ruby/1.9.1/net/http.rb:1316:in赶上＆＃39;从 /usr/lib/ruby/1.9.1/net/http.rb:1316:in transport_request' from /usr/lib/ruby/1.9.1/net/http.rb:1293:in请求＆＃39;从 /usr/lib/ruby/1.9.1/net/http.rb:1286:in block in request' from /usr/lib/ruby/1.9.1/net/http.rb:745:in开始＆＃39;从 /usr/lib/ruby/1.9.1/net/http.rb:1284:in request' from /var/lib/gems/1.9.1/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/default.rb:82:in response_for＆＃39;从 /var/lib/gems/1.9.1/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/default.rb:38:in request' from /var/lib/gems/1.9.1/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:40:in呼叫＆＃39;从 /var/lib/gems/1.9.1/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:598:in raw_execute' from /var/lib/gems/1.9.1/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:576:in执行＆＃39;从 /var/lib/gems/1.9.1/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:554:in find_elements_by' from /var/lib/gems/1.9.1/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/search_context.rb:62:in find_elements＆＃39;从 /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/selenium/driver.rb:52:in find' from /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/node/finders.rb:158:in find_in_base＆＃39;从 /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/node/finders.rb:137:in block in first' from /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/node/finders.rb:136:in各＆＃39;从 /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/node/finders.rb:136:in first' from /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/node/finders.rb:27:in阻止查找＆＃39;从 /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/node/base.rb:46:in wait_until' from /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/node/finders.rb:27:in找到＆＃39;来自（eval）：2：在find' from /var/lib/gems/1.9.1/gems/capybara-1.1.2/lib/capybara/dsl.rb:161:in中找到＆＃39;从 /home/biske/workspace/ScrapingGlasses/lib/luxottica.rb:39:in block in scrape' from /home/biske/workspace/ScrapingGlasses/lib/luxottica.rb:36:in每个＆＃39; 来自/home/biske/workspace/ScrapingGlasses/lib/luxottica.rb:36:in scrape' from /home/biske/workspace/ScrapingGlasses/lib/luxottica.rb:12:in去＆＃39; 来自/home/biske/workspace/ScrapingGlasses/lib/luxottica.rb:48:in `＆＃39;

Answer 1

我之前看到过类似的痕迹和2个潜在原因：

1）像FakeWeb和WebMock这样的宝石修改了ruby的http。尝试删除那些您可能用来模拟/阻止Web请求的宝石和任何类似的宝石。

2）我在一个真正负载的系统中看到了一个案例，这个超时会有些随机发生。真的，这里的问题不是测试，而是系统及其上运行的内容。可以更改http库使用的超时并继续测试。

更新了Capybara :(来自http://selenium.googlecode.com/svn/wiki/RubyBindings.wiki）

Capybara.register_driver :selenium_extended_http_timeout do |app|
    client = Selenium::WebDriver::Remote::Http::Default.new
    client.timeout = 240
    Capybara::Selenium::Driver.new(app, 
                               :browser => :firefox, 
                               :http_client => client, 
                               :resynchronization_timeout => 60,
                               :resynchronize => true)                                                                   
end
Capybara.javascript_driver = :selenium_extended_http_timeout

您很可能不需要重新同步的东西。

在这两种情况下，这都与硒如何进行内部沟通有关。 JsonWireProtocol。

Answer 2

我在Fakeweb＆amp; amp;录像机但升级到selenium-webdriver（2.27.0）后，超时消失了

/usr/lib/ruby/1.9.1/net/protocol.rb:146：在`rbuf_fill中救援'：超时::错误（超时::错误）

2 个答案: