patch 8.1.1738: testing lambda with timer is slow commit https://github.com/vim/vim/commit/9bc4dde45d45df732953491d0f2c3fd3b10a627e Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 24 13:08:29 2019 +0200 patch 8.1.1738: testing lambda with timer is slow Problem: Testing lambda with timer is slow. Solution: Do not test timer accuracy, only that it works. (Daniel Hahler, closes #4723)

" Tests for :undo

func Test_ex_undo()
  new ex-undo
  setlocal ul=10
  exe "normal ione\n\<Esc>"
  setlocal ul=10
  exe "normal itwo\n\<Esc>"
  setlocal ul=10
  exe "normal ithree\n\<Esc>"
  call assert_equal(4, line('$'))
  undo
  call assert_equal(3, line('$'))
  undo 1
  call assert_equal(2, line('$'))
  undo 0
  call assert_equal(1, line('$'))
  quit!
endfunc