" Tests for generic behavior in Vim/Neovim.
Include: include/setup.vader

Execute (Test Vim's b:changedtick behavior):
  " https://github.com/vim/vim/issues/2764
  new
  let before = b:changedtick
  exe 'w' tempname()

  if has('patch-8.1.1498') || has('nvim-0.4')
    let inc_for_unchanged = 0
  else
    let inc_for_unchanged = 1
  endif

  AssertEqual before + inc_for_unchanged, b:changedtick

  let before = b:changedtick
  w
  AssertEqual before + inc_for_unchanged, b:changedtick

  let before = b:changedtick
  update
  AssertEqual before, b:changedtick

  setlocal modified
  let before = b:changedtick
  update
  AssertEqual before + 1, b:changedtick

  let before = b:changedtick
  normal! ochanged
  AssertEqual before + 2, b:changedtick
  update
  AssertEqual before + 3, b:changedtick
  bwipe


  " Via BufWriteCmd / autocommands.
  augroup neomake_tests
    autocmd BufWritePost <buffer>
  augroup END
  function! s:BufWriteCmd() abort
    exe "doautocmd BufWritePre expand('<amatch>')"
    setlocal nomodified
    exe "doautocmd BufWritePost expand('<amatch>')"
  endfunction
  new
  augroup neomake_tests
    au BufWriteCmd * call s:BufWriteCmd()
  augroup END
  let before = b:changedtick
  exe 'w' tempname()
  AssertEqual before, b:changedtick

  w
  AssertEqual before, b:changedtick

  update
  AssertEqual before, b:changedtick

  setlocal modified
  let before = b:changedtick
  update
  AssertEqual before, b:changedtick

  let before = b:changedtick
  normal! ochanged
  AssertEqual before + 2, b:changedtick
  update
  AssertEqual before + 2, b:changedtick
  bwipe