文件的下载
最简单最好的处理文件下载对话框的方式就是完全的避免对话框弹出。
可以在代码里告诉浏览器自动的将文件下载到指定目录，然后在测试用例中访问该目录进行验证。
Firefox
download_directory = "#{Dir.pwd}/downloads"
download_directory.gsub!("/", "\\") if Selenium::WebDriver::Platform.windows?
profile = Selenium::WebDriver::Firefox::Profile.new
profile['browser.download.folderList'] = 2 # custom location
profile['browser.download.dir'] = download_directory
profile['browser.helperApps.neverAsk.saveToDisk'] = "text/csv,application/pdf"
b = Watir::Browser.new :firefox, :profile => profile
关于Firefox的所有配置项可以通过在地址栏中输入'about:config'进行查看。
If you want to know a way to work out the file types (eg. application/pdf) then you can read the following blog post for an step by step guide. 如果你想知道如何处理特定类型的文件，请阅读这篇博文。
Chrome
download_directory = "#{Dir.pwd}/downloads"
download_directory.gsub!("/", "\\") if Selenium::WebDriver::Platform.windows?
profile = Selenium::WebDriver::Chrome::Profile.new
profile['download.prompt_for_download'] = false
profile['download.default_directory'] = download_directory
b = Watir::Browser.new :chrome, :profile => profile