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 for joining lines.

func Test_join_with_count()
  new
  call setline(1, ['one', 'two', 'three', 'four'])
  normal J
  call assert_equal('one two', getline(1))
  %del
  call setline(1, ['one', 'two', 'three', 'four'])
  normal 10J
  call assert_equal('one two three four', getline(1))
  quit!
endfunc