diff --git a/src/testdir/runtest.vim b/src/testdir/runtest.vim
index f0cc1ab..d8a1cf7 100644
--- a/src/testdir/runtest.vim
+++ b/src/testdir/runtest.vim
@@ -386,7 +386,7 @@
 redir @q
 silent function /^Test_
 redir END
-let s:tests = split(substitute(@q, 'function \(\k*()\)', '\1', 'g'))
+let s:tests = split(substitute(@q, '\(function\|def\) \(\k*()\)', '\2', 'g'))
 
 " If there is an extra argument filter the function names against it.
 if argc() > 1
diff --git a/src/testdir/test_vim9_disassemble.vim b/src/testdir/test_vim9_disassemble.vim
index 7875e84..5ba18dd 100644
--- a/src/testdir/test_vim9_disassemble.vim
+++ b/src/testdir/test_vim9_disassemble.vim
@@ -814,4 +814,36 @@
         \, res)
 enddef
 
+def SomeStringArg(arg: string)
+  echo arg
+enddef
+
+def SomeAnyArg(arg: any)
+  echo arg
+enddef
+
+def SomeStringArgAndReturn(arg: string): string
+  return arg
+enddef
+
+def Test_display_func()
+  let res1 = execute('function SomeStringArg')
+  assert_match('.* def SomeStringArg(arg: string).*'
+        \ .. '  echo arg.*'
+        \ .. '  enddef'
+        \, res1)
+
+  let res2 = execute('function SomeAnyArg')
+  assert_match('.* def SomeAnyArg(arg: any).*'
+        \ .. '  echo arg.*'
+        \ .. '  enddef'
+        \, res2)
+
+  let res3 = execute('function SomeStringArgAndReturn')
+  assert_match('.* def SomeStringArgAndReturn(arg: string): string.*'
+        \ .. '  return arg.*'
+        \ .. '  enddef'
+        \, res3)
+enddef
+
 " vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index c01ab83..d5e42e8 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -66,6 +66,9 @@
   let party1: partial
   let party2: partial = funcref('Test_syntax')
 
+  " type becomes list<any>
+  let somelist = rand() > 0 ? [1, 2, 3] : ['a', 'b', 'c']
+
   g:newvar = 'new'
   assert_equal('new', g:newvar)