EnquireLink el0 = new EnquireLink();
el0.setSequenceNumber(0x1000);
EnquireLinkResp el0Resp = el0.createResponse();
// send a response to a request that was NEVER sent
simulator0.sendPdu(el0Resp);
// we should have received a PDU response
PduResponse pdu0 = sessionHandler.getReceivedUnexpectedPduResponses().poll(1000, TimeUnit.MILLISECONDS);
Assert.assertNotNull("Unable to receive unexpected PDU response -- perhaps it was routed incorrectly?", pdu0);
Assert.assertEquals(SmppConstants.CMD_ID_ENQUIRE_LINK_RESP, pdu0.getCommandId());