Extending visual studio to add sub menu to context menu of unit test class

Hi,

Sorry, if i am posting this question in wrong forum.

I just started developing the visual studio extension following the MSDN library and so far i have reached only adding the item to the context menu of the code editor window.

I am using Visual Studio 2013 and installed the  Visual Studio SDK to get the extensibility project templates. I created a small extension to get started and manage the add the item to context menu by adding the below highlighted line to .vsct file.

      <Groupguid="guidHelloVSExtensionCmdSet"id="MyMenuGroup"priority="0x0600">

        <!--<Parent guid="guidSHLMainMenu" id="IDM_VS_MENU_TOOLS"/>-->

        <!--<Parent guid="guidSHLMainMenu" id="IDM_VS_CTXT_ITEMNODE"/>-->

       <Parentguid="guidSHLMainMenu"id="IDM_VS_CTXT_CODEWIN"/>

      </Group>

The context menu "MyFirstVSExtension" is shown as below

I want to restrict my custom context menu item only to a test class (it can be a unit test class or a coded ui class). So how can i recognize the type of class that i am right clicking to bring the context menu. Also, i would like to know if i am bring the context menu from a test method or from outside the test method. Thanks in advance!!!

Thanks, Pratap