解雇确认弹出窗口后出现模态对话框(Selenium :: WebDriver :: Error :: UnhandledAlertError)

Question

我有一个这样的页面:

<input type="button" onclick="confirm('confirm popup');" value="click" />

当我转到页面并单击链接时:

require "watir-webdriver"
browser = Watir::Browser.new
browser.goto "page.html"
browser.button.click

确认弹出窗口出现.我可以解雇它:

require "watir-webdriver/extensions/alerts"
browser.confirm(true) {browser.button(:value => 'Confirm').click}

但我收到此错误消息:

[remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/command_processor.js:10302:in `unknown': Modal dialog present (Selenium::WebDriver::Error::UnhandledAlertError)
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/driver-component.js -> file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/dispatcher.js:85:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/driver-component.js -> file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/dispatcher.js:516:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/driver-component.js -> file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/dispatcher.js:351:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/driver-component.js -> file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/webdriverserver.js:47:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/httpd.js:1935:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/httpd.js:2261:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/httpd.js:1168:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/httpd.js:1616:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/httpd.js:1464:in `unknown'
    from [remote server] file:///var/folders/yx/bz_81fc143b4r9pyhks300m00000gn/T/webdriver-profile20120218-1562-7b7q8d/extensions/fxdriver@googlecode.com/components/httpd.js:1333:in `unknown'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/response.rb:52:in `assert_ok'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/response.rb:15:in `initialize'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:59:in `new'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:59:in `create_response'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/default.rb:64:in `request'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:40:in `call'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:590:in `raw_execute'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:568:in `execute'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:314:in `executeScript'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/common/driver.rb:209:in `execute_script'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/watir-webdriver-0.5.3/lib/watir-webdriver/browser.rb:129:in `execute_script'
    from /Users/zeljko/.rvm/gems/ruby-1.9.3-p125/gems/watir-webdriver-0.5.3/lib/watir-webdriver/extensions/alerts.rb:39:in `confirm'
    from popup.rb:7:in `<main>'

我究竟做错了什么？

环境:

• Mac OS X 10.7.3
• Firefox 10.0.2
• Ruby 1.9.3p125
• selenium-webdriver 2.19.0
• watir-webdriver 0.5.3

Answer 1

我会推荐您参考这个答案/sf/answers/572102191/，其中我解释了如何使用 browser.confirm 等方法。其中的示例有点令人困惑，因为它们直接来自测试，如果您不理解测试页面上有多个按钮的上下文，并且导致确认对话框的按钮的值为“确认”那么该方法包装的“内部”命令没有多大意义。

确认方法之后的循环（或块）中的命令是导致弹出窗口发生的命令。

因此，如何使用这些方法的更好示例如下

alert_message_text = browser.confirm(true) do
  #watir code that causes confirm popup goes here
end 

或者

alert_message_text = browser.confirm(true) {#code that causes confirm popup}

换句话说，它的工作方式.confirm(response) {block}很像告诉 watir“好吧，我在块中给你的命令将导致出现一个确认对话框，当它出现时，我希望你采取由response”指定的操作

因此，错误的地方是块内的命令，您需要在块内移动“browser.button.click”或类似的内容。你的代码最终会看起来像这样

require "watir-webdriver"
require "watir-webdriver/extensions/alerts"

browser = Watir::Browser.new
browser.goto "page.html"
browser.confirm(true) {browser.button(:value => 'click').click}

我将您的点击操作更改为更加具体，根据您提供的 HTML 中的 value 属性来识别按钮。如果您确定它始终是页面上的第一个按钮，您可以将最后一行更改为

browser.confirm(true) {browser.button.click}