--- a/tests/test-uncommit.t	Tue Sep 30 10:27:54 2014 -0500
+++ b/tests/test-uncommit.t	Sun Nov 02 15:06:00 2014 +0000
@@ -347,6 +347,9 @@
   $ hg cat b --rev 0
   b: no such file in rev 07f494440405
   [1]
+  $ hg uncommit --rev . b
+  abort: cannot uncommit to parent changeset
+  [255]
   $ hg uncommit --rev 0 b
   $ hg cat b --rev .
   b: no such file in rev 5b27f6b17da2