public function testHandlingMalformedRequest()
 {
     $response = $this->controller->__invoke(new Request([], [], [], [], [], [], '{{{'));
     $this->assertJsonStringEqualsJsonString(json_encode(['jsonrpc' => '2.0', 'error' => ['code' => -32700, 'message' => 'Syntax error'], 'id' => null]), $response->getContent());
 }