Index: tests/parameters.test
===================================================================
diff -u -ra467cf37f204cc977b7af7519a0994c65f9ed10f -rfd3666742ed34091dbb93a872fe1d34d6b66ad9d
--- tests/parameters.test	(.../parameters.test)	(revision a467cf37f204cc977b7af7519a0994c65f9ed10f)
+++ tests/parameters.test	(.../parameters.test)	(revision fd3666742ed34091dbb93a872fe1d34d6b66ad9d)
@@ -26,6 +26,8 @@
 
   ? {::nsf::method::alias C foo ::set 1} \
       {Invalid argument '1', maybe too many arguments; should be "::nsf::method::alias object ?-per-object? methodName ?-frame method|object|default? cmdName"}
+
+  ? {C eval {:attribute x -class D}} {Invalid argument 'D', maybe too many arguments; should be "::C attribute ?-class value? ?-incremental? spec ?initblock?"} "Test whether the colon prefix is suppressed"
 }
 
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