Index: trunk/psLib/test/collections/tst_psPixels.c
===================================================================
--- trunk/psLib/test/collections/tst_psPixels.c	(revision 4146)
+++ trunk/psLib/test/collections/tst_psPixels.c	(revision 4152)
@@ -5,7 +5,7 @@
  *  @author Robert DeSonia, MHPCC
  *
- *  @version $Revision: 1.3 $
+ *  @version $Revision: 1.4 $
  *           $Name: not supported by cvs2svn $
- *  @date $Date: 2005-06-08 03:17:01 $
+ *  @date $Date: 2005-06-08 19:08:22 $
  *
  *  Copyright 2005 Maui High Performance Computing Center, University of Hawaii
@@ -364,4 +364,12 @@
 
 
+    // Test for invalid region
+    psLogMsg(__func__,PS_LOG_INFO,"Following should generate an error for invalid range");
+    mask = psPixelsToMask(mask,pixels,psRegionSet(10,0,10,0),1);
+    if(mask != NULL) {
+        psError(PS_ERR_UNKNOWN,true,"Did not expect non-NULL for invalid range");
+        return 21;
+    }
+
     psFree(mask);
     psFree(pixels);