Index: unittests/tst_acknow.cpp
===================================================================
diff -u -r805119c460b4a266d6401c8705f4427e7fbe270f -rb798668f16ad0967ab97e96f5f9a2cdd821e899f
--- unittests/tst_acknow.cpp	(.../tst_acknow.cpp)	(revision 805119c460b4a266d6401c8705f4427e7fbe270f)
+++ unittests/tst_acknow.cpp	(.../tst_acknow.cpp)	(revision b798668f16ad0967ab97e96f5f9a2cdd821e899f)
@@ -1,14 +1,14 @@
 /*!
  *
  * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
- * copyright
+ * \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_acknow.cpp
- * date    01/21/2020
- * author  Behrouz NematiPour
+ * \file    tst_acknow.cpp
+ * \date    01/21/2020
+ * \author  Behrouz NematiPour
  *
  */
 #include "tst_acknow.h"
@@ -126,6 +126,40 @@
     _MessageDispatcher._needsAcknow.removeOne(Gui::GuiActionType::KeepAlive);
 }
 
+/*!
+ * \brief   tst_acknow::tst_AcknowModel_Receive_Normal
+ * \details UI receives a message which doesn't require Acknow
+ */
+void tst_acknow::tst_AcknowModel_onAcknowReceive_Correct()
+{
+    QCOMPARE( _MessageAcknowModel._acknowList.count(), 1 );
+    _action = Gui::GuiActionType::KeepAlive;
+    _data   = {0};
+    QCanBusFrame mFrame;
+    QString      mPayload;
+    mFrame.setFrameId(Can_Id::eChlid_HD_UI);
+    mPayload = "A5.03.00.FF.FF.01.00.91";
+    mFrame.setPayload(QByteArray::fromHex(mPayload.remove(QLatin1Char('.')).toLatin1()));
+    qDebug() << "#" << mFrame.toString();
+    emit _CanInterface.didFrameReceive(mFrame);
+    QCOMPARE( _MessageAcknowModel._acknowList.count(), 0 );
+}
+
+/*!
+ * \brief   tst_acknow::tst_AcknowModel_onAcknowReceive_Incorrect
+ * \details Tries to remove a seq from acknow model which is not expected
+ * (there was no message send with this seq which required qcknow)
+ * and the seq should not exist before and after removal
+ * this is a test for qt hash test used for acknow model
+ * \param   vSequence
+ */
+void tst_acknow::tst_AcknowModel_onAcknowReceive_Incorrect()
+{
+    QVERIFY( ! _MessageAcknowModel._acknowList.contains(9999));
+    _MessageAcknowModel.onAcknowReceive(9999);
+    QVERIFY( ! _MessageAcknowModel._acknowList.contains(9999));
+}
+
 void tst_acknow::cleanupTestCase()
 {
     _CanInterface.quitDevice();