patch 8.0.0894: there is no test for runtime filetype detection commit https://github.com/vim/vim/commit/0a0217abfabcee8b0779df2e18a186a4b41e18ce Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 9 22:06:48 2017 +0200 patch 8.0.0894: there is no test for runtime filetype detection Problem: There is no test for runtime filetype detection. Solution: Test a list of filetypes from patterns.

" 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