some_controller_test.rb

require 'test_helper'
require 'flexmock/test_unit'

class SomeControllerTest < ActionController::TestCase
  context "viewing the test page" do
    setup do
      get :index
    end
    
    should_respond_with :success
    should_render_template 'index'
    should_assign_to :some_var, :equals => 'something'
    
    should_include_javascript 'blah'
    should_set_body_class :store
    
    should "show navigation" do
      assert_select 'ul#nav', 1
    end
    
    should "show sub navigation" do
      assert_select 'ul#menu', 1
    end
    
    should "show some address element" do
      assert_select 'div#address'
    end
  end
  
  private
    def self.should_include_javascript(source)
      should "include javascript #{source.inspect}" do
        assert_select "script[src^=/javascripts/#{source}.js]"
      end
    end
    
    def self.should_set_body_class(*args)
      args.each do |class_name|
        should "set body class of #{class_name.inspect}" do
          assert_select "body.#{class_name}"
        end
      end
    end
end