public function testListNullResponse()
{
$processor = new Processor(new Schema(['query' => new ObjectType(['name' => 'RootQuery', 'fields' => ['list' => ['type' => new ListType(new StringType()), 'resolve' => function () {
return null;
}]]])]));
$data = $processor->processPayload(' { list }')->getResponseData();
$this->assertEquals(['data' => ['list' => null]], $data);
}