patch 8.1.0327: the "g CTRL-G" command isn't tested much commit https://github.com/vim/vim/commit/0529583ff144e2cb8fb57fe61a86997310bd7727 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Aug 24 22:07:58 2018 +0200 patch 8.1.0327: the "g CTRL-G" command isn't tested much Problem: The "g CTRL-G" command isn't tested much. Solution: Add more tests. (Dominique Pelle, closes https://github.com/vim/vim/issues/3369)

" Test feedkeys() function.

func Test_feedkeys_x_with_empty_string()
  new
  call feedkeys("ifoo\<Esc>")
  call assert_equal('', getline('.'))
  call feedkeys('', 'x')
  call assert_equal('foo', getline('.'))

  " check it goes back to normal mode immediately.
  call feedkeys('i', 'x')
  call assert_equal('foo', getline('.'))
  quit!
endfunc