public void QueryInterface_NoSuchInterface_Success(object o, string iidString)
{
var cw = new ComWrappersImpl();
IntPtr ptr = cw.GetOrCreateComInterfaceForObject(o, CreateComInterfaceFlags.None);
try
{
Guid iid = new Guid(iidString);
Assert.Equal(E_NOINTERFACE, Marshal.QueryInterface(ptr, ref iid, out IntPtr ppv));
Assert.Equal(IntPtr.Zero, ppv);
Assert.Equal(new Guid(iidString), iid);
}
finally
{
Marshal.Release(ptr);
}
}
public void AddRef_ValidPointer_Success()
{
var cw = new ComWrappersImpl();
IntPtr iUnknown = cw.GetOrCreateComInterfaceForObject(new object(), CreateComInterfaceFlags.None);
try
{
Assert.Equal(2, Marshal.AddRef(iUnknown));
Assert.Equal(3, Marshal.AddRef(iUnknown));
Marshal.Release(iUnknown);
Marshal.Release(iUnknown);
Assert.Equal(2, Marshal.AddRef(iUnknown));
Marshal.Release(iUnknown);
}
finally
{
Marshal.Release(iUnknown);
}
}
