似乎无法使用SitePrism的element.visible?如果元素不存在

时间:2014-01-22 21:39:23

标签: capybara site-prism

我有以下代码:

element :header_upgrade_subscription, :xpath, "//a[text()='Upgrade subscription']"
element :header_change_subscription, :xpath, "//a[text()='Change subscription']"

if header_upgrade_subscription.visible?
  change_subscription = header_upgrade_subscription 
else
  change_subscription = header_change_subscription 
end

问题是如果header_upgrade_subscription不存在,它只会失败:

Capybara::ElementNotFound Exception: Unable to find xpath "//a[text()='Upgrade subscription']"

我知道在Capybara,你可以这样做:

(rdb:1) first(:xpath, "//a[text()='Upgrade subscription']")
nil

如果不存在则返回nil。我如何对SitePrism元素使用“first”方法?这就是我得到的:

(rdb:1) first(header_upgrade_subscription)
Capybara::ElementNotFound Exception: Unable to find xpath "//a[text()='Upgrade subscription']"

我喜欢使用“第一”方法,因为如果元素不存在,它没有等待时间。

感谢您的帮助!

2 个答案:

答案 0 :(得分:4)

if has_header_upgrade_subscription? && header_upgrade_subscription.visible?

答案 1 :(得分:0)

这种方法最适合我,因为它灵活且一致。

假设你有页面类:

class SomePage < SitePrism::Page

    element :some_message_banner, :css, "[data-component-property='message']"

    # Within this class you can use it like this
    def some_method
      ...
      has_some_message_banner?(visible: false, text: "some text")
      # or
      has_some_message_banner?(visible: true)
    end

end

在测试课程之外,您可以像这样使用它:

@some_page = SomePage.new
expect(@some_page.has_some_message_banner?(visible: true, text: "some text")).to be_truthy
# or this combination 
@some_page.has_some_message_banner?(visible: false, text: "some text")

将返回truefalse,具体取决于您要断言的内容