--- a/tests/test-largefiles.t	Sun Sep 09 12:09:53 2012 -0400
+++ b/tests/test-largefiles.t	Sun Sep 09 12:43:24 2012 -0400
@@ -717,6 +717,12 @@
   3 largefiles updated, 0 removed
   $ cd ..
 
+Ensure base clone command argument validation
+
+  $ hg clone -U -u 0 a a-clone-failure
+  abort: cannot specify both --noupdate and --updaterev
+  [255]
+
   $ hg clone --all-largefiles a ssh://localhost/a
   abort: --all-largefiles is incompatible with non-local destination ssh://localhost/a
   [255]