diff -r 0818dd463d41 -r 924385140d98 appfw/apparchitecture/tef/t_largestackstep.cpp
--- a/appfw/apparchitecture/tef/t_largestackstep.cpp	Thu Aug 19 10:05:08 2010 +0300
+++ b/appfw/apparchitecture/tef/t_largestackstep.cpp	Tue Aug 31 15:24:25 2010 +0300
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+// Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).
 // All rights reserved.
 // This component and the accompanying materials are made available
 // under the terms of "Eclipse Public License v1.0"
@@ -29,6 +29,10 @@
 #endif //SYMBIAN_ENABLE_SPLIT_HEADERS
 #include "../apserv/apsclsv.h"
 #include "t_largestackstep.h"
+#include "T_SisFileInstaller.h"
+
+_LIT(KLargeStackAppSisFile, "z:\\apparctest\\apparctestsisfiles\\tlargestackapp.sis");
+_LIT(KLargeStackAppComponent, "tlargestackapp");
 
 const TUid KLargeStackAppUid = {0x10282B27};
 
@@ -94,6 +98,33 @@
 	CleanupStack::PopAndDestroy(commandline);
 	}
 
+TVerdict CT_LargeStackStep::doTestStepPreambleL()
+/**
+   @return - TVerdict code
+   Override of base class virtual
+ */
+    {
+    CSisFileInstaller sisFileInstaller;
+    INFO_PRINTF2(_L("Installing sis file from -> %S"), &KLargeStackAppSisFile);
+    sisFileInstaller.InstallSisAndWaitForAppListUpdateL(KLargeStackAppSisFile); 
+    
+    SetTestStepResult(EPass);
+    return TestStepResult();
+    }
+
+TVerdict CT_LargeStackStep::doTestStepPostambleL()
+/**
+   @return - TVerdict code
+   Override of base class virtual
+ */
+    {
+    CSisFileInstaller sisFileInstaller;
+    sisFileInstaller.UninstallSisL(KLargeStackAppComponent); 
+    
+    return TestStepResult();
+    }
+
+
 TVerdict CT_LargeStackStep::doTestStepL()
 	{
 	INFO_PRINTF1(_L("Test T_LargeStack Started"));