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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
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