如何在我的Cucumber / Capybara步骤定义（Rails 3）中进行xpath正则表达式搜索？

Question

I have a Scenario that validates that the image I just uploaded exists on the next page.

This below works great, except that I have a variable folder structure based on the listing_id. How can I use regex here to match image to only the filename instead of the entire url?

Then /^I should see the image "(.+)"$/ do |image|
    page.should have_xpath("//img[@src=\"/public/images/#{image}\"]")
end

Answer 1

试试page.should have_xpath("//img[contains(@src, \\"#{image}\\")]") ，它将匹配任何src包含你的文件名的img 。

Answer 2

If you have the option then using a css selector is more concise in this case:

page.should have_selector( :css, "a[href$='#{image}']")

Note the ' $ ' on then end of ' href$ ' to denote matching against the end of the string.