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LibGtpv2C_MME_Functions.ttcn

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		/**
		* @author ETSI/STF498
		* @version $Url$
		* $Id$
		* @dec Testcases and component functions module for INT GTPv2-C protocol - MME role
		*/
		module LibGtpv2C_MME_Functions {

		// Libcommon
		import from LibCommon_BasicTypesAndValues all;
		import from LibCommon_DataStrings all;
		import from LibCommon_VerdictControl {type FncRetCode;}
		import from LibCommon_Sync all;
		import from LibCommon_Time all;

		// LibGtpv2C
		import from LibGtpv2C_TypesAndValues all;
		import from LibGtpv2C_TestSystem all;
		import from LibGtpv2C_Pics all;
		import from LibGtpv2C_Configuration all;
		import from LibGtpv2C_Templates all;

		/**
		* @desc This group contains all test case for IUT acting as a MME
		* @see ETSI TS 103 202-2 V0.0.2 (2014-03), clause 5.2.1
		*/
		group pathManagement {

		/**
		* @desc Verify the successful answering of Echo Request with Echo Response - MME role
		* @verdict pass on success, inconc on timeout, fail otherwise
		*/
		function f_TC_S11_MME_PM_01() runs on Gtpv2CComponent {

		// Local variables

		// Preamble
		f_preamble_MME();
		// Nothing to do, Echo Request is a periodic message
		f_selfOrClientSyncAndVerdict(c_prDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Preamble done. *");

		// Test Body
		tc_wait.start; // Use tc_wait instead of tc_ac to wait for periodic Echo Request message
		alt {
		[] gtpv2CPort.receive(
		mw_gtpv2Ind(
		mw_gtpv2Pdu(
		mw_mheader_noteid(
		e_echoRequest
		),
		-,
		mw_gtpv2Payload_echoRequest(
		mw_gtpv2EchoRequest
		)
		)
		)
		) {
		tc_wait.stop;
		// Send echo reply
		gtpv2CPort.send(
		m_gtpv2Req_MME(
		m_gtpv2Pdu(
		m_mheader_noteid(e_echoResponse),
		m_gtpv2ExtendedHeader_noteid(f_getNextSequenceNumber()),
		m_gtpv2Payload_echoResponse(
		m_gtpv2EchoResponse(
		m_recovery(
		f_getNextRestartCounter()
		)
		)
		)
		)
		)
		);
		log("* " & testcasename() & ": PASS: Successful Echo Request Procedure *");
		f_selfOrClientSyncAndVerdict(c_tbDone, e_success);
		}
		[] tc_wait.timeout {
		log("* " & testcasename() & ": INCONC: Expected message not received *");
		f_selfOrClientSyncAndVerdict(c_tbDone, e_timeout);
		}
		} // End of 'alt' statement

		// Postamble
		f_postamble_MME();
		f_selfOrClientSyncAndVerdict(c_poDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Postamble done. *");

		} // End of function f_TC_S11_MME_PM_01

		/**
		* @desc Verify the successful answering of Echo Request with Echo Response with a negative cause value - MME role
		* @verdict pass on success, inconc on timeout, fail otherwise
		*/
		function f_TC_S11_MME_PM_02() runs on Gtpv2CComponent {

		// Local variables

		// Preamble
		f_preamble_MME();
		action("Trigger MME Echo Request Procedure with an error"); // TODO To be refined
		f_selfOrClientSyncAndVerdict(c_prDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Preamble done. *");

		// Test Body
		tc_ac.start;
		alt {
		[] gtpv2CPort.receive(
		mw_gtpv2Ind(
		mw_gtpv2Pdu(
		mw_mheader_noteid(
		e_echoRequest
		),
		-,
		mw_gtpv2Payload_echoRequest(
		mw_gtpv2EchoRequest
		)
		)
		)
		) {
		tc_ac.stop;
		// Send echo reply
		gtpv2CPort.send(
		m_gtpv2Req_MME(
		m_gtpv2Pdu(
		m_mheader_noteid(e_echoResponse),
		m_gtpv2ExtendedHeader_noteid(f_getNextSequenceNumber()),
		m_gtpv2Payload_echoResponse(
		m_gtpv2EchoResponse(
		m_recovery(
		f_getNextRestartCounter()
		),
		m_negative_cause(
		67 // FIXME Crete constance See 3GPP TS 29.274 version 9.11.0 Release 9 Table 8.4-1: Cause values
		)
		)
		)
		)
		)
		);
		log("* " & testcasename() & ": PASS: Unsuccessful Echo Request Procedure *");
		f_selfOrClientSyncAndVerdict(c_tbDone, e_success);
		}
		[] tc_ac.timeout {
		log("* " & testcasename() & ": INCONC: Expected message not received *");
		f_selfOrClientSyncAndVerdict(c_tbDone, e_timeout);
		}
		} // End of 'alt' statement

		// Postamble
		f_postamble_MME();
		f_selfOrClientSyncAndVerdict(c_poDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Postamble done. *");

		} // End of function f_TC_S11_MME_PM_02

		/**
		* @desc Verify the GTP version that the sending entity supports. If a GTP network element receives a message of unsupported GTP version, verify that the network element returns a Version Not Supported Indication message and that it discards the received message - MME role
		* @verdict pass on success, inconc on timeout, fail otherwise
		*/
		function f_TC_S11_MME_PM_03() runs on Gtpv2CComponent {

		// Local variables

		// Preamble
		action("Trigger MME the Version Not supported Procedure"); // TODO To be refined
		f_preamble_MME();
		// Nothing to do, Echo Request is a periodic message
		f_selfOrClientSyncAndVerdict(c_prDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Preamble done. *");

		// Test Body
		tc_wait.start; // Use tc_wait instead of tc_ac to wait for periodic Echo Request message
		alt {
		[] gtpv2CPort.receive(
		mw_gtpv2Ind(
		mw_gtpv2Pdu(
		mw_mheader_invalid_version
		)
		)
		) {
		tc_wait.stop;
		// Send echo reply
		gtpv2CPort.send(
		m_gtpv2Req_MME(
		m_gtpv2Pdu(
		m_mheader_noteid(e_versionNotSupported),
		m_gtpv2ExtendedHeader_noteid(f_getNextSequenceNumber()),
		m_gtpv2Payload_echoResponse(
		m_gtpv2EchoResponse(
		m_recovery(
		f_getNextRestartCounter()
		),
		m_negative_cause(
		66 // FIXME Crete constance See 3GPP TS 29.274 version 9.11.0 Release 9 Table 8.4-1: Cause values
		)
		)
		)
		)
		)
		);
		log("* " & testcasename() & ": PASS: Version Not Supported Indication *");
		f_selfOrClientSyncAndVerdict(c_tbDone, e_success);
		}
		[] tc_wait.timeout {
		log("* " & testcasename() & ": INCONC: Expected message not received *");
		f_selfOrClientSyncAndVerdict(c_tbDone, e_timeout);
		}
		} // End of 'alt' statement

		// Postamble
		f_postamble_MME();
		f_selfOrClientSyncAndVerdict(c_poDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Postamble done. *");

		} // End of function f_TC_S11_MME_PM_03
		} // End of group pathManagement

		/**
		* @desc This group contains all test case for IUT acting as a MME
		* @see ETSI TS 103 202-2 V0.0.2 (2014-03), clause 5.2.2
		*/
		group tunnelManagement {

		/**
		* @desc Validate the Create Session Request/Response and the Modify Bearer Request/Response Procedure between MME and S-GW as part of the ATTACH Procedure - MME role
		* @verdict pass on success, inconc on timeout, fail otherwise
		*/
		function f_TC_S11_MME_TM_01() runs on Gtpv2CComponent {

		// Local variables

		// Preamble
		f_preamble_MME();
		// Nothing to do, Echo Request is a periodic message
		f_selfOrClientSyncAndVerdict(c_prDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Preamble done. *");

		// Test Body
		tc_ac.start;
		// 1. Verify that the MME sends Create Session Request and receives the Create Session Response
		alt {
		[] gtpv2CPort.receive(
		mw_gtpv2Ind(
		mw_gtpv2Pdu(
		mw_mheader_noteid(
		e_createSessionRequest
		),
		-,
		mw_gtpv2Payload_createSessionRequest(
		mw_gtpv2CreateSessionRequest_dummy
		)
		)
		)
		) {
		tc_ac.stop;
		// Send echo reply
		gtpv2CPort.send(
		m_gtpv2Req_MME(
		m_gtpv2Pdu(
		m_mheader_noteid(e_createSessionResponse),
		m_gtpv2ExtendedHeader_noteid(f_getNextSequenceNumber()),
		m_gtpv2Payload_createSessionResponse(
		m_gtpv2createSessionResponse(
		)
		)
		)
		)
		);
		log("* " & testcasename() & ": PASS: Successful Echo Request Procedure *");
		f_selfOrClientSyncAndVerdict(c_tbDone, e_success);
		}
		[] tc_ac.timeout {
		log("* " & testcasename() & ": INCONC: Expected message not received *");
		f_selfOrClientSyncAndVerdict(c_tbDone, e_timeout);
		}
		} // End of 'alt' statement
		// 2. Verify that the MME sends Modify Bearer Request and receives the Modify Bearer Response
		// TODO
		// TODO If S1-MME used, need synchronisation point to trigger Initial Context Setup Response and Attach Commplete messages





		// Postamble
		f_postamble_MME();
		f_selfOrClientSyncAndVerdict(c_poDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Postamble done. *");

		} // End of function f_TC_S11_MME_TM_01

		} // End of group tunnelManagement

		group preambules {

		/**
		* @desc Preamble function
		*/
		function f_preamble_MME() runs on Gtpv2CComponent {
		// Connect client sync port
		f_connect4SelfOrClientSync();

		// Activate defaults
		activate(a_mme_default());

		} // End of function f_preamble_MME

		} // End of group preambules

		group postambles {

		/**
		* @desc Postamble function
		*/
		function f_postamble_MME() runs on Gtpv2CComponent {
		// Deactivate all defaults
		deactivate;
		} // End of function f_postamble_MME

		} // End of group postambles

		group s1mmeTrigger {

		/**
		* @desc Trigger event on S1-MME interface
		*/
		function f_TC_S1_MME_TM_01() runs on Gtpv2CComponent {

		// Local variables

		// Preamble
		f_selfOrClientSyncAndVerdict(c_prDone, e_success);
		log("* " & __SCOPE__ & ": INFO: Preamble done. *");

		// Test Body
		if (not(PICS_SUPPORT_S1_MME_TRIGGERS)) {
		action("Switch the UE to initiate a NAS-ATTACH-REQUEST event on MME");
		} else {
		// FIXME To be developed
		}

		// Postamble
		f_selfOrClientSyncAndVerdict(c_poDone, e_success);

		} // End of function f_TC_S1_MME_TM_01

		} // End of group postambles

		group mmeAltsteps {

		/**
		* @desc Default altstep activated during the preambule
		*/
		altstep a_mme_default() runs on Gtpv2CComponent {
		[] gtpv2CPort.receive {
		log("* a_mme_default: ERROR: Received an unexpected , process it as an error *");
		f_selfOrClientSyncAndVerdict("error", e_error);
		}
		} // End of altstep a_mme_default

		} // End of group mmeAltsteps

		} // End of module LibGtpv2C_MME_Functions
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