Code Coverage with RequireJS in Teaspoon, using this file and suite.boot_partial = "/boot_requirejs_sync"

_boot_requirejs_sync.html.erb

<%
rails_config = Rails.application.config
require_options = {baseUrl: rails_config.assets.prefix}
require_options.merge!(rails_config.requirejs.user_config) if rails_config.respond_to?(:requirejs)
specs = @suite.spec_assets(false).map{ |s| "#{s.gsub(/\.js.*$/, "")}" }

require_options['shim'] ||= {}
specs.each {|s| require_options['shim'][s] = [@suite.helper] }
%>

<%= javascript_include_tag *@suite.spec_assets %>

<script type="text/javascript">
  Teaspoon.onWindowLoad(function () {
    // setup the Teaspoon path prefix to load /assets
    require.config(<%= require_options.to_json.html_safe %>);

    // require specs by striping off the .js file extension
    require(<%= specs.to_json.html_safe %>, function() {
      Teaspoon.execute();
    });
  });
</script>