解除警报后,ruby – Selenium :: WebDriver :: Error :: Unhandl

@selenium
  Scenario: I can be told that geolocation is unavailable                                            # features/home_page.feature:57
    Given I am a visitor                                                                             # features/step_definitions/authentication_steps.rb:5
    When I visit the homepage                                                                        # features/step_definitions/home_page_steps.rb:1
    And I have declined geolocation permissions                                                      # features/step_definitions/home_page_steps.rb:14
    And I click the geolocate button                                                                 # features/step_definitions/home_page_steps.rb:18
    Then I see an alert "Unable to determine your current location. Please type an address instead." # features/step_definitions/web_steps.rb:104

我看到警报“(.？)”的步骤定义为：

Then(/^I see an alert "(.+?)"$/) do |content|
  page.driver.browser.switch_to.alert.text.should == content
  page.driver.browser.switch_to.alert.dismiss
end

出于某种原因,驳回此警报是不够的.行中的下一个场景总是失败：

Modal dialog present (Selenium::WebDriver::Error::UnhandledAlertError)
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/command_processor.js:10521:in `nsCommandProcessor.execute'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/driver_component.js:7510:in `Dispatcher.executeAs/<'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/driver_component.js:7668:in `Resource.handle'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/driver_component.js:7615:in `Dispatcher.dispatch'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/driver_component.js:10336:in `WebDriverServer/<.handle'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/httpd.js:1935:in `unknown'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/httpd.js:2261:in `ServerHandler.handleResponse'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/httpd.js:1168:in `Connection.process'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/httpd.js:1616:in `RequestReader._handleResponse'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/httpd.js:1464:in `RequestReader._processBody'
 [remote server] file:///var/folders/x6/4vcz8vmj5ls2dbc9b3x2qxvh0000gp/T/webdriver-profile20130927-61014-emm2oz/extensions/fxdriver@googlecode.com/components/httpd.js:1333:in `RequestReader.onInputStreamReady'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/response.rb:51:in `assert_ok'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/response.rb:15:in `initialize'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/http/common.rb:59:in `new'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/http/common.rb:59:in `create_response'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/http/default.rb:66:in `request'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/http/common.rb:40:in `call'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/bridge.rb:629:in `raw_execute'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/bridge.rb:607:in `execute'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/bridge.rb:356:in `deleteAllCookies'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/common/options.rb:67:in `delete_all_cookies'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/capybara-2.0.3/lib/capybara/selenium/driver.rb:67:in `reset!'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/capybara-2.0.3/lib/capybara/session.rb:75:in `reset!'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/capybara-2.0.3/lib/capybara.rb:253:in `block in reset_sessions!'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/capybara-2.0.3/lib/capybara.rb:253:in `each'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/capybara-2.0.3/lib/capybara.rb:253:in `reset_sessions!'
 /Users/ccashwell/.rvm/gems/ruby-1.9.3-p194@geostellar/gems/capybara-2.0.3/lib/capybara/cucumber.rb:10:in `Before'

我们尝试升级selenium-webdriver和capybara无济于事.到目前为止唯一有效的方法是复制消除线,感觉很粗但总是摆脱对话.肯定只有一个对话框,所以给出了什么？