随着 Chrome 的 75 版刚刚发布,我们的测试不再正常运行。他们给出了粘贴在下面的堆栈跟踪。我们正在使用带有 rspec、selenium-webdriver 3.8.0 的 ruby on rails v. 5.1.6.2。
堆栈跟踪:
Selenium::WebDriver::Error::UnknownCommandError:
unknown command: Cannot call non W3C standard command while in W3C mode
# 0 chromedriver 0x000000010c46e8e9 chromedriver + 3594473
# 1 chromedriver 0x000000010c3fe543 chromedriver + 3134787
# 2 chromedriver 0x000000010c1aa29f chromedriver + 692895
# 3 chromedriver 0x000000010c11a691 chromedriver + 104081
# 4 chromedriver 0x000000010c11b7d5 chromedriver + 108501
# 5 chromedriver 0x000000010c42d555 chromedriver + 3327317
# 6 chromedriver 0x000000010c438e60 chromedriver + 3374688
# 7 chromedriver 0x000000010c438bf8 chromedriver + 3374072
# 8 chromedriver 0x000000010c40cd39 chromedriver + 3194169
# 9 chromedriver 0x000000010c4396d8 chromedriver + 3376856
# 10 chromedriver 0x000000010c420f27 chromedriver + 3276583
# 11 chromedriver 0x000000010c456064 chromedriver + 3493988
# 12 chromedriver 0x000000010c474617 chromedriver + 3618327
# 13 libsystem_pthread.dylib 0x00007fff7744c2eb _pthread_body + 126
# 14 libsystem_pthread.dylib 0x00007fff7744f249 _pthread_start + 66
# 15 libsystem_pthread.dylib 0x00007fff7744b40d thread_start + 13
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/response.rb:69:in `assert_ok'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/response.rb:32:in `initialize'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/http/common.rb:81:in `new'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/http/common.rb:81:in `create_response'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/http/default.rb:104:in `request'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/http/common.rb:59:in `call'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/bridge.rb:166:in `execute'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/oss/bridge.rb:579:in `execute'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/remote/oss/bridge.rb:526:in `element_displayed?'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/selenium-webdriver-3.8.0/lib/selenium/webdriver/common/element.rb:199:in `displayed?'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/capybara-2.17.0/lib/capybara/selenium/node.rb:148:in `visible?'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/capybara-2.17.0/lib/capybara/node/element.rb:269:in `block in visible?'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/capybara-2.17.0/lib/capybara/node/base.rb:81:in `synchronize'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/capybara-2.17.0/lib/capybara/node/element.rb:269:in `visible?'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/capybara-2.17.0/lib/capybara/queries/selector_query.rb:84:in `matches_filters?'
# /Users/julie/.rvm/gems/ruby-2.5.1/gems/capybara-2.17.0/lib/capybara/result.rb:29:in `block in initialize'
我们的驱动配置:
File.write(LOG_FILE_PATH, '')
Selenium::WebDriver.logger.level = :debug
Selenium::WebDriver.logger.output = LOG_FILE_PATH
Capybara.register_driver :selenium do |app|
# from https://github.com/SeleniumHQ/selenium/issues/3738
capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(loggingPrefs: {browser: 'ALL'})
options = Selenium::WebDriver::Chrome::Options.new
options.add_argument '--disable-infobars' # hide info bar about chrome automating test
# if we don't use this flag, every selenium test will die with the error:
# "unknown error: Chrome failed to start: exited abnormally"
options.add_argument '--no-sandbox'
options.add_argument '--headless' if ENV.fetch("HEADLESS", nil).present?
options.add_argument '--window-size=1600,2400'
options.add_argument '-–allow-file-access-from-files' # TODO Julie - may help with file specs?
options.add_preference('homepage', 'about:blank') # TODO is this working?
options.add_preference('profile.default_content_settings.popups', 0)
options.add_preference('download.default_directory', DownloadHelpers::PATH.to_s)
Capybara::Selenium::Driver.new(
app,
clear_local_storage: true,
clear_session_storage: true,
browser: :chrome,
options: options,
desired_capabilities: capabilities,
)
end
更新:
我能够让我们的测试暂时使用capabilities = { "chromeOptions" => {'w3c' => false} }
.
更新 chromedriver 后,我们开始收到错误“未知错误:DevToolsActivePort 文件不存在”。为了解决这个问题,我们将 selenium-webdriver gem 升级到 3.142.3 并解决了这个问题,允许我们在没有任何额外参数的情况下使用 w3c。