--- a/tests/test-bundle.t	Tue Oct 09 23:26:35 2018 +0200
+++ b/tests/test-bundle.t	Wed Oct 10 00:21:02 2018 +0200
@@ -900,3 +900,8 @@
   $ hg update -R ../update2bundled.hg -r 0
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
 #endif
+
+Test the option that create slim bundle
+
+  $ hg bundle -a --config devel.bundle.delta=p1 ./slim.hg
+  3 changesets found