Watir-webdriver 和 Chrome57；不能再使用`browser.window`

Question

我正在使用 Watir-webdriver、Chromedriver (v2.27) 和 Chrome (v57) 进行一些自动化

我的 spec_helper 有一行代码为 @browser.window.maximize

自从更新到 Chrome v57 后，它不再运行，因为我收到以下错误

Asset Section EULA and Intended Use The asset section behaves like eula and intended use EULA and Intended Use clicks Download and sees intended Use
 Failure/Error: @browser.window.maximize

 Selenium::WebDriver::Error::UnknownError:
   unknown error: cannot get automation extension
   from unknown error: page could not be found: chrome-extension://aapnijgdinlhnhlmodcfapnahmbfebeb/_generated_background_page.html
     (Session info: chrome=57.0.2987.133)
     (Driver info: chromedriver=2.27.440174 (e97a722caafc2d3a8b807ee115bfb307f7d2cfd9),platform=Mac OS X 10.11.6 x86_64)
 Shared Example Group: "eula and intended use" called from ./spec/smoke/public_view/asset_section_dl_share_spec.rb:65
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/response.rb:70:in `assert_ok'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/response.rb:34:in `initialize'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/common.rb:78:in `new'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/common.rb:78:in `create_response'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/default.rb:90:in `request'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/common.rb:59:in `call'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/bridge.rb:649:in `raw_execute'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/bridge.rb:627:in `execute'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/bridge.rb:252:in `maximizeWindow'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/common/window.rb:117:in `maximize'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/watir-webdriver-0.6.11/lib/watir-webdriver/window.rb:96:in `block in maximize'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/common/target_locator.rb:73:in `window'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/watir-webdriver-0.6.11/lib/watir-webdriver/window.rb:200:in `use'
 # /Users/kmancusi/.rvm/gems/ruby-2.2.2/gems/watir-webdriver-0.6.11/lib/watir-webdriver/window.rb:96:in `maximize'
 # ./spec/spec_helper.rb:37:in `block (2 levels) in <top (required)>'

来自我的#spec_helper：

chrome_prefs = {
'profile' => {
  'default_content_setting_values' => { 'automatic_downloads' => 1 }
  }
}

config.before(:all) do
  @browser = Watir::Browser.new :chrome, :prefs => chrome_prefs, switches: %w(--ignore-certificate-errors --disable-popup-blocking --disable-translate)
  @browser.window.maximize
  @browser.goto site
end

我相当有信心更新到 v57 会导致此问题。 在我更新之前它正在工作，并且 - 到目前为止 - 如果我注释掉 @browser.window.maximize 它会运行

有什么想法吗？

Answer 1

我遇到了同样的问题，最初通过删除 browser.window.maximize 并将以下内容添加到开关来修复它：

--start-maximized

该问题随后在 ChromeDriver 2.28 版中得到修复（最新版本为 2.29）。

ChromeDriver 2.28 修复说明包括以下内容：

Fixes a bug which blocked ChromeDriver automation extension from loading and thereby causing window resizing/positioning & screenshot functionalities to break.

并且可以下载here

同时检查测试输出以确保您实际使用的是已下载的新驱动程序，您会看到类似“正在启动 ChromeDriver 2.xx.xxxxxx”的内容。您可能有一些配置指向旧版本的 ChromeDriver。