--- a/tests/test-evolve.t	Mon Jun 30 10:27:15 2014 -0400
+++ b/tests/test-evolve.t	Mon Jun 30 10:25:08 2014 -0400
@@ -619,6 +619,9 @@
   $ hg fold 6 --rev 10
   abort: cannot specify both --rev and a target revision
   [255]
+  $ hg fold .
+  single revision specified, nothing to fold
+  [1]
   $ hg fold 6 # want to run hg fold 6
   2 changesets folded
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved