diff --git a/runtime/syntax/testdir/input/vim9_expr.vim b/runtime/syntax/testdir/input/vim9_expr.vim
new file mode 100644
index 0000000..784d861
--- /dev/null
+++ b/runtime/syntax/testdir/input/vim9_expr.vim
@@ -0,0 +1,20 @@
+vim9script
+# Vim9-script expressions
+
+
+# Command {expr} arguments
+
+if true
+  echo true
+elseif false
+  echo false
+endif
+
+while true
+  break
+endwhile
+
+def Foo(): bool
+  return true
+enddef
+