public function testRemove()
 {
     CMSMenu::clear_menu();
     CMSMenu::add_menu_item('custom', 'Custom Title', 'custom');
     CMSMenu::add_menu_item('other', 'Other Section', 'other', 'CMSMenuTest_LeftAndMainController');
     $this->assertNotEmpty(CMSMenu::get_menu_items());
     CMSMenu::remove_menu_class('CMSMenuTest_LeftAndMainController');
     CMSMenu::remove_menu_item('custom');
     $this->assertEmpty(CMSMenu::get_menu_items());
 }