Index: unittests/tst_messaging.cpp
===================================================================
diff -u -rc421ddadef2ade71d3abe269493a84b12b85296b -rd2035a8728794afeefaa244bf8d1597926d945f5
--- unittests/tst_messaging.cpp	(.../tst_messaging.cpp)	(revision c421ddadef2ade71d3abe269493a84b12b85296b)
+++ unittests/tst_messaging.cpp	(.../tst_messaging.cpp)	(revision d2035a8728794afeefaa244bf8d1597926d945f5)
@@ -1,15 +1,16 @@
 /*!
- *
+ * 
  * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
  * \copyright
- *          THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM,
- *          IN PART OR IN WHOLE,
- *          WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
- *
- * \file    tst_messaging.cpp
- * \date    4/20/2020
- * \author  Behrouz NematiPour
- *
+ * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
+ * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
+ * 
+ * \file tst_messaging.cpp
+ * \author (last) Peter Lucia
+ * \date (last) 06-Jul-2020
+ * \author (original) Behrouz NematiPour
+ * \date (original) 21-Apr-2020
+ * 
  */
 #include "tst_messaging.h"
 
@@ -519,6 +520,36 @@
 }
 
 /*!
+ * \brief   tst_MessageInterpreter_Alarms
+ * \details Tests the message interpreter handling of empty HD messages
+ */
+void tst_messaging::tst_MessageInterpreter_HD_emptyMessages()
+{
+    gDisableHunhandledReport = true;
+    Can::MessageInterpreter interpreter;
+    Can::Message msg;
+    msg.actionId = Gui::GuiActionType::AlarmTriggered;
+    msg.data = {};
+    QVariantList list;
+
+    QList<Gui::GuiActionType> actionTypes = {
+        Gui::GuiActionType::AlarmTriggered,
+        Gui::GuiActionType::AlarmCleared,
+        Gui::GuiActionType::AlarmSilenceRsp,
+        Gui::GuiActionType::TreatmentState,
+    };
+
+    foreach (const Gui::GuiActionType &each, actionTypes) {
+        msg.actionId = each;
+        QVERIFY(interpreter.interpretMessage_HD(msg, list));
+
+    }
+
+    msg.actionId = Gui::GuiActionType::String;
+    QVERIFY(!interpreter.interpretMessage_HD(msg, list));
+}
+
+/*!
  * \brief   tst_messaging::tst_MessageInterpreter_treatmentRangesData_isType
  * \details Tests MessageInterpreter treatmentRangesData method Message Type check
  */
@@ -682,6 +713,19 @@
 }
 
 /*!
+ * \brief   tst_messaging::tst_MessageInterpreter_interpretMessage_AlarmSilenceReq
+ * \details Tests MessageInterpreter interpretMessage to handle AlarmSilenceReq message type
+ *          if data is empty (count==0)
+ */
+void tst_messaging::tst_MessageInterpreter_interpretMessage_AlarmSilenceReq()
+{
+    Can::MessageInterpreter iMsg;
+    QByteArray payload;
+    QVERIFY(iMsg.interpretMessage(Gui::GuiActionType::AlarmSilenceReq, {}, payload));
+    QVERIFY(payload.isEmpty());
+}
+
+/*!
  * \brief   tst_messaging::tst_MessageInterpreter_interpretMessage_AdjustUltrafiltrationStateReq
  * \details Tests MessageInterpreter interpretMessage to handle AdjustUltrafiltrationStateReq message type
  *          if data is empty (count==0)