Index: tests/parameters.test
===================================================================
diff -u -r470bd5f54e0da47e4eda094ee9f4aa2ba7af18f1 -r8f64a468d8bb53f2ba317c8c738c2d3a24243980
--- tests/parameters.test	(.../parameters.test)	(revision 470bd5f54e0da47e4eda094ee9f4aa2ba7af18f1)
+++ tests/parameters.test	(.../parameters.test)	(revision 8f64a468d8bb53f2ba317c8c738c2d3a24243980)
@@ -1298,6 +1298,10 @@
   set count [nx::test cget -count]
   nx::test configure -count 1
   ? {p2 sexes delete female} {m m}
+  ? {p2 sexes delete female} {::p2: 'f' is not in variable 'sexes' (values are: 'm m')}
+  ? {p2 sexes delete -nocomplain female} {m m}
+  ? {p2 sexes delete -nocomplain male} {m}
+  ? {p2 sexes get} {m}
   nx::test configure -count $count
 
   Person public method bar {s:sex,0..*,slot=::Person::slot::sexes,convert} {return $s}