How can I use assert_select in a Rails functional test to check for multiple elements of the same type, differing only by text?_问答_开发者

How can I use assert_select in a Rails functional test to check for multiple elements of the same type, differing only by text?

开发者 https://www.devze.com 2023-02-20 16:54 出处：网络

I have a Rails view that outputs HTML similar to this: <html> <body> <h1>Keywords</h1>

I have a Rails view that outputs HTML similar to this:

<html>
  <body>
    <h1>Keywords</h1>

    <h2>EN</h2>
    <h3>Accepted</h3>
    <ul>
      <li>Foo</li>
    </ul>
    <h3>Rejected</h3>
    <ul>
      <li>Bar</li>
    </ul>

    <h2>SV</h2>
    <h3>Accepted</h3>
    <ul>
      <li>Föö</li>
    </ul>
    <h3>Rejected</h3>
    <ul>
      <li>Bär</li>
    </ul>
  </body>
</html>

I'd like to use assert_select to ensure that I have <h2> tags for each language:

languages.each do |language|
  assert_select 'body > h2', :text => language.upcase
end

But this fails:

<"DE"> expected but was
<"SV">.
<false> is n开发者_Go百科ot true.
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/assertions/selector_assertions.rb:299:in `assert_select'
    ~/foo/test/functional/api/keywords_controller_test.rb:123:in `test_html'

I know that I can use assert_match %q{<h2>#{language.upcase}</h2>} in my block, but that feels so crufty when assert_select exists.

Any ideas?

I found a hacktacular solution (thanks to the HTML::Tag class in scrapi post on the QuarkRuby blog), using the undocumented HTML::Tag class that is yielded by assert_select in block form:

# Count the <h2> tags and accumulate their text content
h2_texts = nil
assert_select('body > h2', :count => languages.size) do |elements|
   h2_texts = elements.map {|element| element.children.first.content }
end
languages.each do |language|
  assert h2_texts.include?(language.upcase), "<h2> tag for #{language} exists"
end

I guess assert_select just can't do this, or it can and it is not documented. I guess I'll have to UTSL...