ruby-on-rails – 如何使用Cucumber-Capybara断言是否存在闪存变量?

我正在使用Cucumber和Capybara运行Rails 3.0.7项目,我有一个步骤定义,检查是否存在flash [:error]:

Then /^I should be able to see the main page properly$/ do
    current_path.should == "/"
    flash[:error].should == nil
end

当我进行黄瓜测试时,我收到一个错误

And I should be able to see the main page properly # features/step_definitions/user_auth_steps.rb:17
  undefined method `flash' for nil:NilClass (NoMethodError)
  ./features/step_definitions/user_auth_steps.rb:19:in `/^I should be able to see the main page properly$/'
  features/user_auth.feature:10:in `And I should be able to see the main page properly'

这是处理变量断言的正确方法吗?我注意到如果我使用会话[:某事],就会发生同样的错误.

最佳答案 您应该检查页面上实际可见的内容,例如在这种情况下:

page.should_not have_css('.flash')
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