view src/testdir/test_changedtick.vim @ 33774:f2dd85a2bfc0 v9.0.2107

patch 9.0.2107: [security]: FPE in adjust_plines_for_skipcol Commit: https://github.com/vim/vim/commit/cb0b99f0672d8446585d26e998343dceca17d1ce Author: Christian Brabandt <cb@256bit.org> Date: Tue Nov 14 20:05:59 2023 +0100 patch 9.0.2107: [security]: FPE in adjust_plines_for_skipcol Problem: [security]: FPE in adjust_plines_for_skipcol Solution: don't divide by zero, return zero Prevent a floating point exception when calculating w_skipcol (which can happen with a small window when the number option is set and cpo+=n). Add a test to verify Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Thu, 16 Nov 2023 22:15:08 +0100
parents 08940efa6b4e
children
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" Tests for b:changedtick

func Test_changedtick_increments()
  new
  " New buffer has an empty line, tick starts at 2.
  let expected = 2
  call assert_equal(expected, b:changedtick)
  call assert_equal(expected, b:['changedtick'])
  call setline(1, 'hello')
  let expected += 1
  call assert_equal(expected, b:changedtick)
  call assert_equal(expected, b:['changedtick'])
  undo
  " Somehow undo counts as two changes.
  let expected += 2
  call assert_equal(expected, b:changedtick)
  call assert_equal(expected, b:['changedtick'])
  bwipe!
endfunc

func Test_changedtick_dict_entry()
  let d = b:
  call assert_equal(b:changedtick, d['changedtick'])
endfunc

func Test_changedtick_bdel()
  new
  let bnr = bufnr('%')
  let v = b:changedtick
  bdel
  " Delete counts as a change too.
  call assert_equal(v + 1, getbufvar(bnr, 'changedtick'))
endfunc

func Test_changedtick_islocked()
  call assert_equal(0, islocked('b:changedtick'))
  let d = b:
  call assert_equal(0, islocked('d.changedtick'))
endfunc

func Test_changedtick_fixed()
  call assert_fails('let b:changedtick = 4', 'E46:')
  call assert_fails('let b:["changedtick"] = 4', 'E46:')

  call assert_fails('lockvar b:changedtick', 'E940:')
  call assert_fails('lockvar b:["changedtick"]', 'E46:')
  call assert_fails('unlockvar b:changedtick', 'E940:')
  call assert_fails('unlockvar b:["changedtick"]', 'E46:')
  call assert_fails('unlet b:changedtick', 'E795:')
  call assert_fails('unlet b:["changedtick"]', 'E46:')

  let d = b:
  call assert_fails('lockvar d["changedtick"]', 'E46:')
  call assert_fails('unlockvar d["changedtick"]', 'E46:')
  call assert_fails('unlet d["changedtick"]', 'E46:')

endfunc

func Test_changedtick_not_incremented_with_write()
  new
  let fname = "XChangeTick"
  exe 'w ' .. fname

  " :write when the buffer is not changed does not increment changedtick
  let expected = b:changedtick
  w
  call assert_equal(expected, b:changedtick)

  " :write when the buffer IS changed DOES increment changedtick
  let expected = b:changedtick + 1
  setlocal modified
  w
  call assert_equal(expected, b:changedtick)

  " Two ticks: change + write
  let expected = b:changedtick + 2
  call setline(1, 'hello')
  w
  call assert_equal(expected, b:changedtick)

  " Two ticks: start insert + write
  let expected = b:changedtick + 2
  normal! o
  w
  call assert_equal(expected, b:changedtick)

  " Three ticks: start insert + change + write
  let expected = b:changedtick + 3
  normal! ochanged
  w
  call assert_equal(expected, b:changedtick)

  bwipe
  call delete(fname)
endfunc

" vim: shiftwidth=2 sts=2 expandtab