--- a/tests/test-debugcommands.t	Mon Oct 30 17:46:07 2017 -0400
+++ b/tests/test-debugcommands.t	Mon Oct 30 17:08:16 2017 +0100
@@ -156,3 +156,15 @@
   from h hidden in g at:
    debugstacktrace.py:6 in f
    debugstacktrace.py:9 in g
+
+Test debugcapabilities command:
+
+  $ hg debugcapabilities ./debugrevlog/
+  Main capabilities:
+    branchmap
+    bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Aphases%3Dheads%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps
+    getbundle
+    known
+    lookup
+    pushkey
+    unbundle