commit 99fa721944dda9d07c53c907c33466728df5c271
author Bram Moolenaar <Bram@vim.org> Sun Apr 26 15:59:55 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Sun Apr 26 15:59:55 2020 +0200
tree 7ead4c06b56e21eb208ea1b9673cd463ba13f3c0
parent e297802d6ddbebbf36f9a2d01127c034fab88b3b

patch 8.2.0644: insufficient testing for invalid function arguments

Problem:    Insufficient testing for invalid function arguments.
Solution:   Add more tests. (Yegappan Lakshmanan, closes #5988)

src/testdir/test_window_id.vim

diff --git a/src/testdir/test_window_id.vim b/src/testdir/test_window_id.vim
index 9c92fae..20465ae 100644
--- a/src/testdir/test_window_id.vim
+++ b/src/testdir/test_window_id.vim
@@ -91,6 +91,10 @@
   split
   call assert_equal(sort([id5, win_getid()]), sort(win_findbuf(bufnr5)))
 
+  call assert_fails('let w = win_getid([])', 'E745:')
+  call assert_equal(0, win_getid(-1))
+  call assert_equal(-1, win_getid(1, -1))
+
   only!
 endfunc
 
@@ -130,4 +134,8 @@
   let w2 = win_getid()
   call assert_equal(['leaf', w2], 2->winlayout())
   tabclose
+
+  call assert_equal([], winlayout(-1))
 endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab