public function testHelperFilter()
{
$grid = new ArrayGrid();
$grid->addFilter('name', Grid::FILTER_NE, 'Smith');
$this->assertEquals('/index/index/arr-filter-id/ne-1', $grid->filter('id', Grid::FILTER_NE, 1));
$this->assertEquals('/index/index/arr-filter-name/ne-Smith/arr-filter-id/ne-1', $grid->filter('id', Grid::FILTER_NE, 1, false));
}