Testing rspec views with capybara

capybara_extensions.rb

# encoding: utf-8

module RSpec
  module Support
    module Views
      module CapybaraExtensions
        def rendered
          Capybara.string(@rendered)
        end

        def within(selector)
          yield rendered.find(selector)
        end
      end
    end
  end
end

foo.html.haml_spec.rb

# encoding: utf-8

require 'spec_helper'

describe 'page/foo.html.haml' do
  include RSpec::Support::Views::CapybaraExtensions

  before do
    render
  end

  it 'has a header' do
    rendered.find('h1').should have_content('Foo')
  end
end

http://www.tamingthemindmonkey.com/2011/11/07/capybara-matchers-and-scoping-in-view-specs
http://rubyforge.org/pipermail/rspec-users/2011-October/020664.html