--- a/tests/test-exchange-A2.t	Tue Feb 28 17:08:14 2017 +0100
+++ b/tests/test-exchange-A2.t	Tue Mar 14 14:52:56 2017 -0700
@@ -57,6 +57,17 @@
   $ hg debugobsolete
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
   bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ hg debugobsrelsethashtree
+  a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04 0000000000000000000000000000000000000000
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 50656e04a95ecdfed94659dd61f663b2caa55e98
+  35b1839966785d5703a01607229eea932db42f87 b9c8f20eef8938ebab939fe6a592587feacf3245
+  $ hg debugstablerange --rev 'head()'
+  rev         node index size depth      obshash
+    2 35b183996678     0    2     2 b9c8f20eef89
+    1 f5bc6836db60     0    2     2 50656e04a95e
+    2 35b183996678     1    1     2 b9c8f20eef89
+    0 a9bdc8b26820     0    1     1 000000000000
+    1 f5bc6836db60     1    1     2 50656e04a95e
   $ cd ..
   $ cd ..