>># 
>># Copyright 1990, 1991 by the Massachusetts Institute of Technology and
>># UniSoft Group Limited.
>># 
>># Permission to use, copy, modify, distribute, and sell this software and
>># its documentation for any purpose is hereby granted without fee,
>># provided that the above copyright notice appear in all copies and that
>># both that copyright notice and this permission notice appear in
>># supporting documentation, and that the names of MIT and UniSoft not be
>># used in advertising or publicity pertaining to distribution of the
>># software without specific, written prior permission.  MIT and UniSoft
>># make no representations about the suitability of this software for any
>># purpose.  It is provided "as is" without express or implied warranty.
>># 
>># $XConsortium: dltcntxt.m,v 1.5 92/06/11 17:33:48 rws Exp $
>># 
>>#
>>TITLE XDeleteContext CH10
>>ASSERTION A XDeleteContext-1
A call to XDeleteContext deletes the table entry for
previously saved context data for display display, window w
and context type context, and returns zero.
>>STRATEGY
Create a test window.
Save some context information using XSaveContext.
Delete the context information using XDeleteContext.
Verify that the context was deleted using XFindContext.
>>ASSERTION A XDeleteContext-2
When there is no previously saved context data for display
display, window w and context type context, then a call to
XDeleteContext returns XCNOENT.
>>STRATEGY
Create a test window with no context.
Call XDeleteContext to delete the non-existent context.
Verify that XCNOENT was returned.
