public function test_set_value_format_that_is_clousure() { $column = new Text(); $extension = new ValueFormatColumnOptionsExtension(); $column->addExtension($extension); $column->initOptions(); $extension->initOptions($column); $column->setOptions(array('value_format' => function ($data) { return (string) $data; })); $extension->filterValue($column, array('for' => 'bar')); }