Rails的測試，如果一個元素的屬性存在或不

Question

我需要找到天氣沒有跟隨鏈接存在於外部電子郵件，它不應該在任何內部電子郵件。

test "should have nofollow in external links and not in internal links in comment" do 
    visit @game_path 
    fill_in('comment_comment', :with => 'Please click link <a href='http://www.internallink.com/soccer'> internal link <a/> and click external link <a href='http://www.google.com'> external link <a/> 
    click_button('submit_comment') 
    assert page.has_no_css?('div.error'), "Error div found on page after posting comment" 
    assert page.has_content?('Please click link '), "Comment not found on page after posting" 
    ext = find(:xpath, "//a[@href='http://www.google.com']") 
    assert_equal(ext['rel'], "nofollow") 
    internal = find(:xpath, "//a[@href='http://www.internallink.com/soccer']") 
    assert_equal(internal.try(:rel), nil) 
end 

它在給出錯誤assert_equal(int.try(:rel), nil)。 Anybuddy可以指導我解決問題嗎？

我的最終目標是在用戶評論進行測試，外部鏈接應該有相對=「nofollow的」屬性存在或不？

Answer 1

爲什麼不檢查不相對=「nofollow的」鏈接的存在？

find(:xpath, "//a[@href='http://www.internallink.com/soccer' and @rel != 'nofollow']")