diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index c6088f3..595a963 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -1844,12 +1844,10 @@
   call assert_equal(1, index(range(1, 5), 2))
 
   " inputlist()
-  call test_feedinput("1\<CR>")
-  call assert_equal(1, inputlist(range(10)))
-  call test_feedinput("1\<CR>")
-  call assert_equal(1, inputlist(range(3, 10)))
-
-  call assert_equal('[0,1,2,3]', json_encode(range(4)))
+  call feedkeys(":let result = inputlist(range(10))\<CR>1\<CR>", 'x')
+  call assert_equal(1, result)
+  call feedkeys(":let result = inputlist(range(3, 10))\<CR>1\<CR>", 'x')
+  call assert_equal(1, result)
 
   " insert()
   call assert_equal([42, 1, 2, 3, 4, 5], insert(range(1, 5), 42))
@@ -1862,6 +1860,9 @@
   " join()
   call assert_equal('0 1 2 3 4', join(range(5)))
 
+  " json_encode()
+  call assert_equal('[0,1,2,3]', json_encode(range(4)))
+
   " len()
   call assert_equal(0, len(range(0)))
   call assert_equal(2, len(range(2)))