Unit test case improvements
 - Missing counters checks added in some test cases

Change-Id: I2fbc2a592546d05e946cbd6021f5baf21c2f4db0
Signed-off-by: Anssi Mannila <anssi.mannila@nokia.com>
diff --git a/pkg/control/ut_messaging_test.go b/pkg/control/ut_messaging_test.go
index 7d7f67b..23a12a9 100644
--- a/pkg/control/ut_messaging_test.go
+++ b/pkg/control/ut_messaging_test.go
@@ -675,7 +675,6 @@
 	xappConn2.TestMsgChanEmpty(t)
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
-
 	mainCtrl.VerifyCounterValues(t)
 }
 
@@ -3292,7 +3291,7 @@
 
 	<-time.After(100 * time.Millisecond)
 
-	// Send modified  requst, this time with e2 subscriptions.
+	// Send modified  request, this time with e2 subscriptions.
 	params2 := xappConn1.GetRESTSubsReqReportParams(subReqCount + 1)
 	params2.SetSubscriptionID(&restSubId)
 
@@ -5313,14 +5312,14 @@
 //     | RESTSubDelReq   |              |
 //     |---------------->|              |
 //     |                 |              |
+//     |   RESTSubDelResp|              |
+//     |<----------------|              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelResp |
 //     |                 |<-------------|
 //     |                 |              |
-//     |   RESTSubDelResp|              |
-//     |<----------------|              |
 //
 //-----------------------------------------------------------------------------
 
@@ -5334,6 +5333,18 @@
 func RESTReportSubReqAndSubDelOk(t *testing.T, subReqCount int, testIndex int) {
 	xapp.Logger.Debug("TEST: TestRESTReportSubReqAndSubDelOk with testIndex %v", testIndex)
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, uint64(subReqCount)},
+		Counter{cSubRespFromE2, uint64(subReqCount)},
+		Counter{cRestSubNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, uint64(subReqCount)},
+		Counter{cSubDelRespFromE2, uint64(subReqCount)},
+	})
+
 	// Req
 	params := xappConn1.GetRESTSubsReqReportParams(subReqCount)
 	restSubId := xappConn1.SendRESTSubsReq(t, params)
@@ -5371,10 +5382,11 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 /*
-func TestRESTPolicySubReqAndSubDelOk(t *testing.T) {  was in comments already
+func TestRESTPolicySubReqAndSubDelOk(t *testing.T) {  //Was in comments already. Next case is not run!
 	CaseBegin("TestRESTPolicySubReqAndSubDelOk")
 
 	subReqCount := 2
@@ -5389,6 +5401,18 @@
 func RESTPolicySubReqAndSubDelOk(t *testing.T, subReqCount int, testIndex int) {
 	xapp.Logger.Debug("TEST: TestRESTPolicySubReqAndSubDelOk with testIndex %v", testIndex)
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, uint64(subReqCount)},
+		Counter{cSubRespFromE2, uint64(subReqCount)},
+		Counter{cRestSubNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, uint64(subReqCount)},
+		Counter{cSubDelRespFromE2, uint64(subReqCount)},
+	})
+
 	// Req
 	params := xappConn1.GetRESTSubsReqPolicyParams(subReqCount)
 	restSubId := xappConn1.SendRESTSubsReq(t, params)
@@ -5419,6 +5443,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 func TestRESTTwoPolicySubReqAndSubDelOk(t *testing.T) {
@@ -5997,7 +6022,7 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubResp | ASN.1 decode fails
-//     |                 |<-------------|
+//     |                 |<-------------| Decode failed. More data needed. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubReq       |
 //     |                 |------------->|
@@ -6007,11 +6032,27 @@
 //     | RESTNotif (fail)|              |
 //     |<----------------|              |
 //     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //
 //-----------------------------------------------------------------------------
 
 func TestRESTUnpackSubscriptionResponseDecodeFail(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionResponseDecodeFail")
+
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubReqTimerExpiry, 1},
+		Counter{cSubReReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cSubFailFromE2, 1},
+		Counter{cRestSubFailNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+	})
+
 	const subReqCount int = 1
 
 	// Req
@@ -6044,6 +6085,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6064,13 +6106,13 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubResp | Unknown instanceId
-//     |                 |<-------------|
+//     |                 |<-------------| No valid subscription found with subIds [0]
 //     |                 |              |
 //     |                 | SubReq       |
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubFail | Duplicated action
-//     |                 |<-------------|
+//     |                 |<-------------| No valid subscription found with subIds [0]
 //     | RESTNotif (fail)|              |
 //     |<----------------|              |
 //     |                 | SubDelReq    |
@@ -6078,11 +6120,30 @@
 //     |                 |              |
 //     |                 |   SubDelResp |
 //     |                 |<-------------|
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //
 //-----------------------------------------------------------------------------
 
 func TestRESTUnpackSubscriptionResponseUnknownInstanceId(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionResponseUnknownInstanceId")
+
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubReqTimerExpiry, 2},
+		Counter{cSubReReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cSubFailFromE2, 1},
+		Counter{cRestSubFailNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelRespFromE2, 1},
+	})
+
 	const subReqCount int = 1
 
 	// Req
@@ -6091,7 +6152,7 @@
 
 	crereq, cremsg := e2termConn1.RecvSubsReq(t)
 
-	// Unknown instanceId in this response which will result resending original request
+	// Unknown instanceId 0 in this response which will result resending original request
 	orgInstanceId := crereq.RequestId.InstanceId
 	crereq.RequestId.InstanceId = 0
 	e2termConn1.SendSubsResp(t, crereq, cremsg)
@@ -6100,7 +6161,7 @@
 
 	xappConn1.ExpectRESTNotificationNok(t, restSubId, "allFail")
 
-	// Subscription already created in E2 Node.
+	// Subscription already created in E2 Node. E2 Node responds with failure but there is also same unknown instanceId 0
 	fparams := &teststube2ap.E2StubSubsFailParams{}
 	fparams.Set(crereq)
 	fparams.SetCauseVal(0, 1, 3) // CauseRIC / duplicate-action
@@ -6121,6 +6182,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6141,30 +6203,51 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubResp | No transaction for the response
-//     |                 |<-------------|
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubReq       |
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubFail | Duplicated action
-//     |                 |<-------------|
+//     |                 |<-------------|Ongoing transaction not found. This will result timer expiry and sending delete
 //     | RESTNotif (fail)|              |
 //     |<----------------|              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelResp |
-//     |                 |<-------------|
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelResp |
-//     |                 |<-------------|
+//     |                 |<-------------| Ongoing transaction not found.
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionResponseNoTransaction(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionResponseNoTransaction")
+
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubReqTimerExpiry, 2},
+		Counter{cSubReReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cSubFailFromE2, 1},
+		Counter{cRestSubFailNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelReqTimerExpiry, 2},
+		Counter{cSubDelReReqToE2, 1},
+		Counter{cSubDelRespFromE2, 2},
+	})
+
 	const subReqCount int = 1
 
 	// Req
@@ -6206,6 +6289,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6226,7 +6310,7 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubFail | ASN.1 decode fails
-//     |                 |<-------------|
+//     |                 |<-------------| Decode failed. More data needed. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubReq       |
 //     |                 |------------->|
@@ -6236,10 +6320,25 @@
 //     | RESTNotif (fail)|              |
 //     |<----------------|              |
 //     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionFailureDecodeFail(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionFailureDecodeFail")
+
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubReqTimerExpiry, 1},
+		Counter{cSubReReqToE2, 1},
+		Counter{cSubFailFromE2, 2},
+		Counter{cRestSubFailNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+	})
+
 	const subReqCount int = 1
 
 	// Req
@@ -6273,6 +6372,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6293,13 +6393,13 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubFail | Unknown instanceId
-//     |                 |<-------------|
+//     |                 |<-------------| No valid subscription found with subIds [0]. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubReq       |
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubFail | Duplicated action
-//     |                 |<-------------|
+//     |                 |<-------------|No valid subscription found with subIds [0]. This will result timer expiry and sending delete
 //     | RESTNotif (fail)|              |
 //     |<----------------|              |
 //     |                 | SubDelReq    |
@@ -6307,19 +6407,36 @@
 //     |                 |              |
 //     |                 |   SubDelResp |
 //     |                 |<-------------|
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionFailureUnknownInstanceId(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionFailureUnknownInstanceId")
 	const subReqCount int = 1
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubReqTimerExpiry, 2},
+		Counter{cSubReReqToE2, 1},
+		Counter{cSubFailFromE2, 2},
+		Counter{cRestSubFailNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelRespFromE2, 1},
+	})
+
 	// Req
 	params := xappConn1.GetRESTSubsReqReportParams(subReqCount)
 	restSubId := xappConn1.SendRESTSubsReq(t, params)
 
 	crereq, cremsg := e2termConn1.RecvSubsReq(t)
 
-	// Unknown instanceId in this response which will result resending original request
+	// Unknown instanceId 0 in this response which will result resending original request
 	fparams := &teststube2ap.E2StubSubsFailParams{}
 	fparams.Set(crereq)
 	fparams.Fail.RequestId.InstanceId = 0
@@ -6329,7 +6446,7 @@
 
 	xappConn1.ExpectRESTNotificationNok(t, restSubId, "allFail")
 
-	// Subscription already created in E2 Node.
+	// Subscription already created in E2 Node. E2 Node responds with failure but there is also same unknown instanceId 0
 	fparams.SetCauseVal(0, 1, 3) // CauseRIC / duplicate-action
 	e2termConn1.SendSubsFail(t, fparams, cremsg)
 
@@ -6348,6 +6465,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6368,26 +6486,51 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubFail | No transaction for the response
-//     |                 |<-------------|
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubReq       |
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |      SubFail | Duplicated action
-//     |                 |<-------------|
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry and sending delete
 //     | RESTNotif (fail)|              |
 //     |<----------------|              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelResp |
-//     |                 |<-------------|
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry and resending
+//     |                 |              |
+//     |                 | SubDelReq    |
+//     |                 |------------->|
+//     |                 |              |
+//     |                 |   SubDelResp |
+//     |                 |<-------------| Ongoing transaction not found.
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionFailureNoTransaction(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionFailureNoTransaction")
 	const subReqCount int = 1
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubReqTimerExpiry, 2},
+		Counter{cSubReReqToE2, 1},
+		Counter{cSubFailFromE2, 2},
+		Counter{cRestSubFailNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelReqTimerExpiry, 2},
+		Counter{cSubDelReReqToE2, 1},
+		Counter{cSubDelRespFromE2, 2},
+	})
+
 	// Req
 	params := xappConn1.GetRESTSubsReqReportParams(subReqCount)
 	restSubId := xappConn1.SendRESTSubsReq(t, params)
@@ -6428,6 +6571,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6450,20 +6594,37 @@
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
-//     |                 |   SubDelResp | ASN.1 decode fails
-//     |                 |<-------------|
+//     |                 |   SubDelResp | ASN.1 decode fails.
+//     |                 |<-------------| Decode failed. More data needed. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
-//     |                 |   SubDelFail | Subscription does exist any more
+//     |                 |   SubDelFail | Subscription does exist any more in E2 node
 //     |                 |<-------------|
 //     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionDeleteResponseDecodeFail(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionDeleteResponseDecodeFail")
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cRestSubNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelReqTimerExpiry, 1},
+		Counter{cSubDelReReqToE2, 1},
+		Counter{cSubDelFailFromE2, 1},
+		Counter{cSubDelRespFromE2, 1},
+	})
+
 	// Req
 	var params *teststube2ap.RESTSubsReqParams = nil
 	restSubId, e2SubsId := createSubscription(t, xappConn1, e2termConn1, params)
@@ -6475,7 +6636,7 @@
 	delreq, delmsg := e2termConn1.RecvSubsDelReq(t)
 
 	// Decode of this response fails which will result resending original request
-	e2termConn1.SendInvalidE2Asn1Resp(t, delmsg, xapp.RIC_SUB_DEL_REQ)
+	e2termConn1.SendInvalidE2Asn1Resp(t, delmsg, xapp.RIC_SUB_DEL_RESP)
 
 	// E2t: Receive 2nd SubsDelReq and send SubsDelResp
 	delreq, delmsg = e2termConn1.RecvSubsDelReq(t)
@@ -6490,6 +6651,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6513,18 +6675,35 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelResp | Unknown instanceId
-//     |                 |<-------------|
+//     |                 |<-------------| No valid subscription found with subIds [0]. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
-//     |                 |   SubDelFail | Subscription does exist any more
+//     |                 |   SubDelFail | Subscription does exist any more in E2 node
 //     |                 |<-------------|
-//
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionDeleteResponseUnknownInstanceId(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionDeleteResponseUnknownInstanceId")
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cRestSubNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelReqTimerExpiry, 1},
+		Counter{cSubDelReReqToE2, 1},
+		Counter{cSubDelRespFromE2, 1},
+		Counter{cSubDelFailFromE2, 1},
+	})
+
 	// Req
 	var params *teststube2ap.RESTSubsReqParams = nil
 	restSubId, e2SubsId := createSubscription(t, xappConn1, e2termConn1, params)
@@ -6552,6 +6731,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6575,18 +6755,35 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelResp | No transaction for the response
-//     |                 |<-------------|
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
-//     |                 |   SubDelFail | Subscription does exist any more
-//     |                 |<-------------|
-//
+//     |                 |   SubDelFail | Subscription does exist any more in E2 node
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionDeleteResponseNoTransaction(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionDeleteResponseNoTransaction")
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cRestSubNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelReqTimerExpiry, 2},
+		Counter{cSubDelReReqToE2, 1},
+		Counter{cSubDelRespFromE2, 1},
+		Counter{cSubDelFailFromE2, 1},
+	})
+
 	// Req
 	var params *teststube2ap.RESTSubsReqParams = nil
 	restSubId, e2SubsId := createSubscription(t, xappConn1, e2termConn1, params)
@@ -6615,6 +6812,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6638,18 +6836,34 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelFail | ASN.1 decode fails
-//     |                 |<-------------|
+//     |                 |<-------------| Decode failed. More data needed. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
-//     |                 |   SubDelFail | Subscription does exist any more
+//     |                 |   SubDelFail | Subscription does exist any more in E2 node
 //     |                 |<-------------|
-//
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionDeleteFailureDecodeFail(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionDeleteFailureDecodeFail")
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cRestSubNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelReqTimerExpiry, 1},
+		Counter{cSubDelReReqToE2, 1},
+		Counter{cSubDelFailFromE2, 2},
+	})
+
 	// Req
 	var params *teststube2ap.RESTSubsReqParams = nil
 	restSubId, e2SubsId := createSubscription(t, xappConn1, e2termConn1, params)
@@ -6676,6 +6890,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6699,18 +6914,34 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelFail | Unknown instanceId
-//     |                 |<-------------|
+//     |                 |<-------------| No valid subscription found with subIds [0]. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
-//     |                 |   SubDelFail | Subscription does exist any more
-//     |                 |<-------------|
-//
+//     |                 |   SubDelFail | Subscription does exist any more in E2 node
+//     |                 |<-------------| No valid subscription found with subIds [0].
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionDeleteailureUnknownInstanceId(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionDeleteailureUnknownInstanceId")
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cRestSubNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelReqTimerExpiry, 1},
+		Counter{cSubDelReReqToE2, 1},
+		Counter{cSubDelFailFromE2, 2},
+	})
+
 	// Req
 	var params *teststube2ap.RESTSubsReqParams = nil
 	restSubId, e2SubsId := createSubscription(t, xappConn1, e2termConn1, params)
@@ -6721,14 +6952,14 @@
 	// E2t: Receive 1st SubsDelReq
 	delreq, delmsg := e2termConn1.RecvSubsDelReq(t)
 
-	// Unknown instanceId in this response which will result resending original request
+	// Unknown instanceId 0 in this response which will result resending original request
 	delreq.RequestId.InstanceId = 0
 	e2termConn1.SendSubsDelFail(t, delreq, delmsg)
 
 	// E2t: Receive 2nd SubsDelReq
 	delreq, delmsg = e2termConn1.RecvSubsDelReq(t)
 
-	// Subscription does not exist in in E2 Node.
+	// Subscription does not exist in in E2 Node. E2 Node responds with failure but there is also same unknown instanceId 0
 	e2termConn1.SendSubsDelFail(t, delreq, delmsg)
 
 	// Wait that subs is cleaned
@@ -6738,6 +6969,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6761,18 +6993,34 @@
 //     |                 |------------->|
 //     |                 |              |
 //     |                 |   SubDelFail | No transaction for the response
-//     |                 |<-------------|
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry and resending
 //     |                 |              |
 //     |                 | SubDelReq    |
 //     |                 |------------->|
 //     |                 |              |
-//     |                 |   SubDelFail | Subscription does exist any more
-//     |                 |<-------------|
-//
+//     |                 |   SubDelFail | Subscription does exist any more in E2 node
+//     |                 |<-------------| Ongoing transaction not found. This will result timer expiry
+//     |                 |              |
+//     |           [SUBS DELETE]        |
+//     |                 |              |
 //-----------------------------------------------------------------------------
 func TestRESTUnpackSubscriptionDeleteFailureNoTransaction(t *testing.T) {
 	xapp.Logger.Debug("TEST: TestRESTUnpackSubscriptionDeleteFailureNoTransaction")
 
+	mainCtrl.CounterValuesToBeVeriefied(t, CountersToBeAdded{
+		Counter{cRestSubReqFromXapp, 1},
+		Counter{cRestSubRespToXapp, 1},
+		Counter{cSubReqToE2, 1},
+		Counter{cSubRespFromE2, 1},
+		Counter{cRestSubNotifToXapp, 1},
+		Counter{cRestSubDelReqFromXapp, 1},
+		Counter{cRestSubDelRespToXapp, 1},
+		Counter{cSubDelReqToE2, 1},
+		Counter{cSubDelReqTimerExpiry, 2},
+		Counter{cSubDelReReqToE2, 1},
+		Counter{cSubDelFailFromE2, 2},
+	})
+
 	// Req
 	var params *teststube2ap.RESTSubsReqParams = nil
 	restSubId, e2SubsId := createSubscription(t, xappConn1, e2termConn1, params)
@@ -6801,6 +7049,7 @@
 	e2termConn1.TestMsgChanEmpty(t)
 	mainCtrl.wait_registry_empty(t, 10)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------
@@ -6865,8 +7114,8 @@
 
 	// Wait that subs is cleaned
 	waitSubsCleanup(t, e2SubsId, 10)
-	mainCtrl.VerifyCounterValues(t)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 func TestRESTSubReqPolicyUpdateTimeoutAndSubDelOkSameAction(t *testing.T) {
@@ -6924,9 +7173,8 @@
 	e2termConn1.SendSubsDelResp(t, delreq, delmsg)
 
 	waitSubsCleanup(t, e2SubsId, 10)
-
-	mainCtrl.VerifyCounterValues(t)
 	mainCtrl.VerifyAllClean(t)
+	mainCtrl.VerifyCounterValues(t)
 }
 
 //-----------------------------------------------------------------------------