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[英]Minitest/Capybara: Green test turns red when switching to JS driver
[英]Using Capybara and Minitest to test JavaScript
已经提出了这个问题的几个变体,我肯定从阅读这个主题中学到了,但大多数答案似乎并不直接适用于这种情况,或涉及使用Rspec或Cucumber的解决方案。
我目前正在使用Minitest和Capybara开发测试套件。 如果可能的话,我不想带太多其他宝石,但如果它们很轻,我会对它开放,因为测试已经花了一段时间才能运行。
Rspec有:js => true
,Cucumber有@javascript
,但minitest似乎没有这样的东西。 那么,自然的解决方案是切换驱动程序并执行: Capybara.current_driver = :selenium
,但是当我这样做时,它不起作用,我得到2个错误(每个启用js的测试都有一个错误)。
我的问题是:为什么我会收到这些错误,如何进行一些基本的JavaScript测试呢? 这是错误:
Component returned failure code: 0x804b0012 (NS_ERROR_UNKNOWN_PROTOCOL) [nsIWebNavigation.loadURI]
Exception `Selenium::WebDriver::Error::UnknownError' at:
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/response.rb:52:in `assert_ok'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/response.rb:15:in `initialize'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:59:in `new'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:59:in `create_response'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/default.rb:65:in `request'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:40:in `call'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:598:in `raw_execute'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:576:in `execute'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:99:in `get'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/navigation.rb:14:in `to'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/capybara-1.1.2/lib/capybara/selenium/driver.rb:36:in `visit'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/capybara-1.1.2/lib/capybara/session.rb:157:in `visit'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/capybara-1.1.2/lib/capybara/dsl.rb:161:in `visit'
test/integration/resource_access_test.rb:22:in `block (2 levels) in <top (required)>'
这是另一个错误:
undefined method `[]' for nil:NilClass
Exception `NoMethodError' at:
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/rack-test-0.6.1/lib/rack/test.rb:171:in `env_for'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/rack-test-0.6.1/lib/rack/test.rb:56:in `get'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/capybara-1.1.2/lib/capybara/rack_test/browser.rb:62:in `process'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/capybara-1.1.2/lib/capybara/rack_test/browser.rb:21:in `visit'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/capybara-1.1.2/lib/capybara/rack_test/driver.rb:32:in `visit'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/capybara-1.1.2/lib/capybara/session.rb:157:in `visit'
/Users/epithelialbiology/.rvm/gems/ruby-1.9.2-p320/gems/capybara-1.1.2/lib/capybara/dsl.rb:161:in `visit'
test/integration/resource_access_test.rb:40:in `block (2 levels) in <top (required)>'
有谁知道这里会发生什么,以及我如何解决这个问题?
请尝试以下语法来切换Capybara驱动程序:
Capybara.current_driver = Capybara.javascript_driver
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