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Editorial Team
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Asked: 2026-05-18T10:58:45+00:00

I want to test if my ‘style.css’ is linked to my page while rendering

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I want to test if my ‘style.css’ is linked to my page while rendering it with a certain layout, for example ‘application.html.erb’:

So here’s the spec:

spec/views/layouts/application.html.erb_spec.rb

  it 'should include styles for screen media' do
    render
    rendered.should have_selector('link',
      :href => '/stylesheets/style.css',
      :media => 'screen',
      :rel => 'stylesheet',
      :type => 'text/css'
    )
  end

And my application.html.erb looks like:

app/views/layouts/application.html.erb

<html>
  <head>
    <meta content="text/html; charset=utf-8" http-equiv="content-type">
    <%= stylesheet_link_tag :style, :media => 'screen' %>
    <%= javascript_include_tag :defaults %>
    <%= csrf_meta_tag %>
  </head>
  <body>
    <%= yield %>
  </body>
</html>

When I run my view spec, it fails because

<link href="/stylesheets/style.css?1289599022" media="screen" rel="stylesheet" type="text/css">

is rendered, and

<link rel='stylesheet' type='text/css' media='screen' href='/stylesheets/reset.css'/>

is expected.

And it’s all about the numbers ‘?1289599022’ rails adding after the filename. Any ideas on how to test this functionality?

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1 Answer

  1. Editorial Team

    Try using the Rails stylesheet_path() helper instead… this will generate the URL with the timestamp for you.

    it 'renders a link to the stylesheet' do
  render
  rendered.should have_selector('link',
    :rel => 'stylesheet',
    :media => 'screen',
    :href => stylesheet_path('style')
  )
end
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