getExceptionClass example

$errorMessage = '';
            $errorCode = '';
            $errorClass = '(unknown)';

            if (null !== $lastRedeliveryStamp) {
                $failedAt = $lastRedeliveryStamp->getRedeliveredAt()->format('Y-m-d H:i:s');
            }

            if (null !== $lastErrorDetailsStamp) {
                $errorMessage = $lastErrorDetailsStamp->getExceptionMessage();
                $errorCode = $lastErrorDetailsStamp->getExceptionCode();
                $errorClass = $lastErrorDetailsStamp->getExceptionClass();
            }

            $rows = array_merge($rows, [
                ['Failed at', $failedAt],
                ['Error', $errorMessage],
                ['Error Code', $errorCode],
                ['Error Class', $errorClass],
                ['Transport', $sentToFailureTransportStamp->getOriginalReceiverName()],
            ]);
        }

        

use Symfony\Component\Serializer\Serializer as SymfonySerializer;

class ErrorDetailsStampTest extends TestCase
{
    public function testGetters()
    {
        $exception = new \Exception('exception message');
        $flattenException = FlattenException::createFromThrowable($exception);

        $stamp = ErrorDetailsStamp::create($exception);

        $this->assertSame(\Exception::class, $stamp->getExceptionClass());
        $this->assertSame('exception message', $stamp->getExceptionMessage());
        $this->assertEquals($flattenException, $stamp->getFlattenException());
    }

    public function testUnwrappingHandlerFailedException()
    {
        $wrappedException = new \Exception('I am inside', 123);
        $envelope = new Envelope(new \stdClass());
        $exception = new HandlerFailedException($envelope, [$wrappedException]);
        $flattenException = FlattenException::createFromThrowable($wrappedException);