--- a/tests/test-exchange-A6.t	Tue Feb 28 17:22:21 2017 +0100
+++ b/tests/test-exchange-A6.t	Fri Mar 31 15:33:59 2017 +0200
@@ -3,7 +3,7 @@
 
 Initial setup
 
-  $ . $TESTDIR/_exc-util.sh
+  $ . $TESTDIR/testlib/exchange-util.sh
 
 
 === A.6 between existing changeset ===
@@ -59,6 +59,15 @@
   
   $ hg debugobsolete
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ hg debugobsrelsethashtree
+  a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04 0000000000000000000000000000000000000000
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0000000000000000000000000000000000000000
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 3bc2ee626e11a7cf8fee7a66d069271e17d5a597
+  $ hg debugobshashrange --subranges --rev 'head()'
+           rev         node        index         size        depth      obshash
+             2 e5ea8f9c7314            0            2            2 3bc2ee626e11
+             0 a9bdc8b26820            0            1            1 000000000000
+             2 e5ea8f9c7314            1            1            2 3bc2ee626e11
   $ cd ..
   $ cd ..