Watir网络驱动程序没有像预期的那样工作

Question

我试图执行一个简单的浏览器测试

require 'rubygems'
require 'watir-webdriver'
b = Watir::Browser.new :firefox
b.goto 'http://www.google.com/'

浏览器立即启动并关闭，引发以下错误

c:/ruby22/lib/ruby/2.2.0/net/http/generic_request.rb:25:in `initialize': HTTP request path is empty (ArgumentError)
    from c:/ruby22/lib/ruby/2.2.0/net/http/request.rb:14:in `initialize'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/default.rb:95:in `new'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/default.rb:95:in `new_request_for'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/default.rb:57:in `request'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/default.rb:88:in `request'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/common.rb:59:in `call'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/bridge.rb:649:in `raw_execute'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/bridge.rb:123:in `create_session'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/bridge.rb:87:in `initialize'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/firefox/bridge.rb:55:in `initialize'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/common/driver.rb:53:in `new'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/common/driver.rb:53:in `for'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver.rb:84:in `for'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/watir-webdriver-0.9.1/lib/watir-webdriver/browser.rb:46:in `initialize'
    from test.rb:3:in `new'
    from test.rb:3:in `<main>'

HTTP请求路径为空意味着什么？新版本的watir是否更改了调用参数？

有人遇到过类似的问题吗？

我的系统是Windows 7 64位，我运行在一个代理之后，浏览器已经配置了一个代理

---编辑---

我引入了一个尾随斜杠，但我现在得到了一个新的错误，也得到了以前的错误，每次我都要更改代码并保存它来获得这个错误

c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/firefox/launcher.rb:90:in `connect_until_stable': unable to obtain stable firefox connection in 60 seconds (127.0.0.1:7055) (Selenium::WebDriver::Error::WebDriverError)
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/firefox/launcher.rb:55:in `block in launch'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/common/socket_lock.rb:43:in `locked'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/firefox/launcher.rb:51:in `launch'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/firefox/bridge.rb:43:in `initialize'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/common/driver.rb:53:in `new'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/common/driver.rb:53:in `for'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver.rb:84:in `for'
    from c:/ruby22/lib/ruby/gems/2.2.0/gems/watir-webdriver-0.9.1/lib/watir-webdriver/browser.rb:46:in `initialize'
    from test.rb:8:in `new'
    from test.rb:8:in `<main>'

---编辑---

我已经下载了geckodriverv0。10.0fromhttps://github.com/mozilla/geckodriver/releases然后复制粘贴了壁虎河。exe，并将firefox文件夹添加到路径中

我安装了selenium-webDrive测试版3.0.0.beta2.1

但我还是得到了同样的错误

c:/ruby22/lib/ruby/2.2.0/net/http/generic_request.rb:25:in `initialize': HTTP request path is empty (ArgumentError)

我也尝试过安装火狐ESR版本，并添加到PATH，这也不起作用

---编辑---

我打开了文件c：/ruby22/lib/ruby/2.2.0/net/超文本传输协议/generic_request.rb

并介绍了打印声明如下

print "\n"
print uri_or_path

if URI === uri_or_path then
  print "\ncoming to if part\n"
  @uri = uri_or_path.dup
  host = @uri.hostname.dup
  host << ":".freeze << @uri.port.to_s if @uri.port != @uri.default_port
  @path = uri_or_path.request_uri
  raise ArgumentError, "no HTTP request path given" unless @path
else
  print "\ncoming to else part\n"
  @uri = nil
  host = nil
  raise ArgumentError, "no HTTP request path given" unless uri_or_path
  raise ArgumentError, "HTTP request path is empty" if uri_or_path.empty?
  @path = uri_or_path.dup
end

我得到了下面的输出

/session
coming to else part


coming to else part

/shutdown
coming to else part
c:/ruby22/lib/ruby/2.2.0/net/http/generic_request.rb:29:in `initialize': HTTP request path is empty (ArgumentError)

Answer 1

很可能是因为Firefox 47.0中的一个bug。您需要更新到Firefox 47.0.1，才能使用Selenium 2.53.4。

Answer 2

试着在IRB中输入这些命令，一次一行。这将使失败发生的地方更清楚

您最初的错误表明它在第3行失败，在上面的代码中，它尝试创建浏览器对象的新实例（该实例还启动firefox，然后尝试将浏览器对象连接到实际浏览器）。如果这不起作用，通常是因为您没有使用支持浏览器的webdriver版本。也许你有一个全新的firefox，需要更新webdriver。

有时，在一个新的FF发布后（每6周一次）会有一个短暂的窗口，它引入了一个突破性的变化，我们没有一个支持该版本的更新webdriver gem。