it('should navigate between panes on click', function() {
      var elm = compileDirective('default');
      expect(sandboxEl.find('.nav-tabs > li.active').text()).toBe('title-1');
      expect(sandboxEl.find('.tab-content > .tab-pane.active').text()).toBe('content-1');
      sandboxEl.find('.nav-tabs > li:eq(1) > a').triggerHandler('click');