diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index 03285f9..99b4458 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -853,6 +853,9 @@
   call popup_clear()
   call assert_fails('call popup_create("text", "none")', 'E715:')
   call popup_clear()
+  call assert_fails('call popup_create(test_null_string(), {})', 'E450:')
+  call assert_fails('call popup_create(test_null_list(), {})', 'E450:')
+  call popup_clear()
 
   call assert_fails('call popup_create("text", #{col: "xxx"})', 'E475:')
   call popup_clear()
@@ -902,6 +905,8 @@
   call assert_fails('call popup_create("text", #{mask: test_null_list()})', 'E475:')
   call assert_fails('call popup_create("text", #{mapping: []})', 'E745:')
   call popup_clear()
+  call assert_fails('call popup_create("text", #{tabpage : 4})', 'E997:')
+  call popup_clear()
 endfunc
 
 func Test_win_execute_closing_curwin()
@@ -1113,8 +1118,13 @@
   let line = join(map(range(1, 6), 'screenstring(1, v:val)'), '')
   call assert_equal('hworld', line)
 
+  call assert_fails('call popup_move(winid, [])', 'E715:')
+  call assert_fails('call popup_move(winid, test_null_dict())', 'E715:')
+
   call popup_close(winid)
 
+  call assert_equal(0, popup_move(-1, {}))
+
   bwipe!
 endfunc
 
@@ -2176,7 +2186,11 @@
   call assert_equal(1, options.drag)
   call assert_equal('Another', options.highlight)
 
+  call assert_fails('call popup_setoptions(winid, [])', 'E715:')
+  call assert_fails('call popup_setoptions(winid, test_null_dict())', 'E715:')
+
   call popup_close(winid)
+  call assert_equal(0, popup_setoptions(winid, options.wrap))
 endfunc
 
 func Test_popupwin_garbage_collect()