delaunayn.m: Check inputs for non-finite values to avoid segfault in QHull (bug #67315)

* delaunayn.m: Validate that input PTS does not contain Inf or NaN using
isfinite().  Update input validation message format to reflect Octave
conventions.  Update BIST tests for change of message.  Add new BIST tests
for bug #67315.

Author: jgpallero

scripts/geometry/delaunayn.m

@@ -70,7 +70,11 @@
 
   ## NOTE: varargin options input validation is performed in __delaunayn__
   if ((! isnumeric (pts)) || (ndims (pts) > 2))
-    error ("delaunayn: input PTS must be a 2-dimensional numeric array");
+    error ("delaunayn: PTS must be a 2-dimensional numeric array");
+  endif
+  ## QHull library will segfault if input contains Inf or NaN (bug #67315)
+  if (any (! isfinite (pts(:))))
+    error ("delaunayn: PTS must not contain Inf or NaN values");
   endif
 
   ## Perform delaunay calculation using either default or specified options
@@ -257,7 +261,9 @@
 
 ## Input validation tests
 %!error <Invalid call> delaunayn ()
-%!error <input PTS must be> delaunayn ("abc")
-%!error <input PTS must be> delaunayn ({1})
-%!error <input PTS must be> delaunayn (true)
-%!error <input PTS must be> delaunayn (ones (3,3,3))
+%!error <PTS must be .* numeric array> delaunayn ("abc")
+%!error <PTS must be .* numeric array> delaunayn ({1})
+%!error <PTS must be .* numeric array> delaunayn (true)
+%!error <PTS must be a 2-dimensional .* array> delaunayn (ones (3,3,3))
+%!error <PTS must not contain Inf> delaunayn ([1, Inf, 3])
+%!error <PTS must not contain .* NaN> delaunayn ([1, NaN, 3])