diff --git a/src/testdir/test45.in b/src/testdir/test45.in
index cc99149..1dfad54 100644
--- a/src/testdir/test45.in
+++ b/src/testdir/test45.in
@@ -28,9 +28,14 @@
 k:call append("$", foldlevel("."))
 :" test syntax folding
 :set fdm=syntax fdl=0
-:syn region Hup start="dd" end="hh" fold
+:syn region Hup start="dd" end="ii" fold contains=Fd1,Fd2,Fd3
+:syn region Fd1 start="ee" end="ff" fold contained
+:syn region Fd2 start="gg" end="hh" fold contained
+:syn region Fd3 start="commentstart" end="commentend" fold contained
 Gzk:call append("$", "folding " . getline("."))
 k:call append("$", getline("."))
+jAcommentstart  Acommentend:set fdl=1
+3j:call append("$", getline("."))
 :" test expression folding
 :fun Flvl()
   let l = getline(v:lnum)
diff --git a/src/testdir/test45.ok b/src/testdir/test45.ok
index f5a1380..713cf88 100644
--- a/src/testdir/test45.ok
+++ b/src/testdir/test45.ok
@@ -8,8 +8,9 @@
 0
 indent 2
 1
-folding 8 hh
+folding 9 ii
     3 cc
+7 gg
 expr 2
 1
 2