--- a/tests/test-revset.t	Tue May 23 01:08:19 2017 +0530
+++ b/tests/test-revset.t	Tue May 23 01:22:33 2017 +0530
@@ -1231,6 +1231,16 @@
   2147483647
   $ hg debugrevspec 'wdir()~3'
   5
+  $ hg debugrevspec 'ancestors(wdir())'
+  0
+  1
+  2
+  3
+  4
+  5
+  6
+  7
+  2147483647
   $ hg debugrevspec 'wdir()~0'
   2147483647
   $ hg debugrevspec 'p1(wdir())'