code: function(tasks){
          var taskName = 'excludeTest';
          tasks[taskName] = {
              baseDir: 'test/fixtures/Bower Project Css In App/app',
              moduleFilter: function(m){
                  m = m ||'';
                  return m.lastIndexOf('css') + 3 != m.length;
              }
          };
      }
docs: TODO test of "main: null" var noMain = function(tasks){ var taskName = 'noMain'; tasks[taskName] = { baseDir: 'test/fixtures/Simple Bower Project/app', main: null }; };