public function testFilterNumericExposedGroupedEmpty() {
$filters = $this
->getGroupedExposedFilters();
$view = views_get_view('test_view');
$view->storage
->newDisplay('page', 'Page', 'page_1');
// Filter: Age, Operator: empty, Value:
$filters['age']['group_info']['default_group'] = 4;
$view
->setDisplay('page_1');
$view->displayHandlers['page_1']
->overrideOption('filters', $filters);
$this
->executeView($view);
$resultset = array();
$this
->assertIdenticalResultset($view, $resultset, $this->column_map);
}