commit https://github.com/vim/vim/commit/9bd31860521b53ad657c4d6d320d670e30a049f8 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jun 13 22:58:39 2016 +0200 patch 7.4.1934 Problem: New style tests not executed with MinGW compiler. Solution: Add new style test support. (Yegappan Lakshmanan)

" 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