patch 8.0.1123: cannot define a toolbar for a window
Problem: Cannot define a toolbar for a window.
Solution: Add a window-local toolbar.
diff --git a/src/testdir/test_winbar.vim b/src/testdir/test_winbar.vim
new file mode 100644
index 0000000..1961607
--- /dev/null
+++ b/src/testdir/test_winbar.vim
@@ -0,0 +1,23 @@
+" Test WinBar
+
+if !has('menu')
+ finish
+endif
+
+func Test_add_remove_menu()
+ new
+ amenu 1.10 WinBar.Next :let g:did_next = 11<CR>
+ amenu 1.20 WinBar.Cont :let g:did_cont = 12<CR>
+ emenu WinBar.Next
+ call assert_equal(11, g:did_next)
+ emenu WinBar.Cont
+ call assert_equal(12, g:did_cont)
+
+ wincmd w
+ call assert_fails('emenu WinBar.Next', 'E334')
+ wincmd p
+
+ aunmenu WinBar.Next
+ aunmenu WinBar.Cont
+ close
+endfunc