public function testConvertUnknownException()
{
$event = new GetResponseForExceptionEvent($this->mockKernel(), new Request(), HttpKernelInterface::MASTER_REQUEST, new \RuntimeException());
$listener = new ExceptionConverterListener();
$listener->onKernelException($event);
$exception = $event->getException();
$this->assertInstanceOf('RuntimeException', $exception);
}