--- a/tests/test-wireproto.t
+++ b/tests/test-wireproto.t
@@ -208,8 +208,45 @@
   abort: unexpected response: empty string
   [255]
 
+(do some extra pulling to be sure)
+
+  $ hg -R client pull http://localhost:$HGPORT/
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  no changes found
+  obsmarker-exchange: 258 bytes received
+
+  $ hg -R client pull http://localhost:$HGPORT/ --config experimental.evolution=createmarkers
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  no changes found
+
+  $ hg -R client pull http://localhost:$HGPORT/ --config experimental.evolution=createmarkers --config extensions.evolve='!'
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  no changes found
+
 But we do let it goes fine on repository with exchange disabled:
 
   $ $RUNTESTDIR/killdaemons.py $DAEMON_PIDS
   $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log  --config experimental.evolution='!'
   $ hg debugpushkey http://localhost:$HGPORT/ obsolete
+
+(do some extra pulling to be sure)
+
+  $ hg -R client pull http://localhost:$HGPORT/
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  no changes found
+
+  $ hg -R client pull http://localhost:$HGPORT/ --config experimental.evolution=createmarkers
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  no changes found
+
+  $ hg -R client pull http://localhost:$HGPORT/ --config experimental.evolution=createmarkers --config extensions.evolve='!'
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  no changes found
+
+  $ $RUNTESTDIR/killdaemons.py $DAEMON_PIDS