原型：选择两个孩子中的第一个
我正在 Ruby on Rails 中实现功能测试。我需要在网页上创建一个 assert_select，其中有一个 content div，它是两个
项目的数量。我无法将任何类或 id 添加到任何列表中。 所以我的选择器看起来像这样：
assert_select 'content ul<something_here_to_specify_the_first_one> li', <number_of_li_elements
但是，我找不到“选择第一个 ul 元素”的方法。我查看了 http://content.labnotes.org/assert_select/assert_select.html< /a> 但无法弄清楚哪一个适合我。
干杯!
I'm implementing a functional test in Ruby on Rails. I need to make an assert_select on a web page, which has a content div, which was two <ul>lists. I need to check the number of <li> items in the first list. And I can't add any class or id to any of the <ul> list.
So my selector would look like this:
assert_select 'content ul<something_here_to_specify_the_first_one> li', <number_of_li_elements
However, I can't find the way to do that 'select the first one of the ul elements'. I've taken a look at http://content.labnotes.org/assert_select/assert_select.html but haven't been able to figure out which one is the right for me.
Cheers!
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为了选择第一个 ul 元素，请执行以下操作：
In order to select the first ul element, do: