1" Tests for b:changedtick
2
3func Test_changedtick_increments()
4  new
5  " New buffer has an empty line, tick starts at 2.
6  let expected = 2
7  call assert_equal(expected, b:changedtick)
8  call assert_equal(expected, b:['changedtick'])
9  call setline(1, 'hello')
10  let expected += 1
11  call assert_equal(expected, b:changedtick)
12  call assert_equal(expected, b:['changedtick'])
13  undo
14  " Somehow undo counts as two changes.
15  let expected += 2
16  call assert_equal(expected, b:changedtick)
17  call assert_equal(expected, b:['changedtick'])
18  bwipe!
19endfunc
20
21func Test_changedtick_dict_entry()
22  let d = b:
23  call assert_equal(b:changedtick, d['changedtick'])
24endfunc
25
26func Test_changedtick_bdel()
27  new
28  let bnr = bufnr('%')
29  let v = b:changedtick
30  bdel
31  " Delete counts as a change too.
32  call assert_equal(v + 1, getbufvar(bnr, 'changedtick'))
33endfunc
34
35func Test_changedtick_fixed()
36  call assert_fails('let b:changedtick = 4', 'E46:')
37  call assert_fails('let b:["changedtick"] = 4', 'E46:')
38
39  call assert_fails('lockvar b:changedtick', 'E940:')
40  call assert_fails('lockvar b:["changedtick"]', 'E46:')
41  call assert_fails('unlockvar b:changedtick', 'E940:')
42  call assert_fails('unlockvar b:["changedtick"]', 'E46:')
43  call assert_fails('unlet b:changedtick', 'E795:')
44  call assert_fails('unlet b:["changedtick"]', 'E46:')
45
46  let d = b:
47  call assert_fails('lockvar d["changedtick"]', 'E46:')
48  call assert_fails('unlockvar d["changedtick"]', 'E46:')
49  call assert_fails('unlet d["changedtick"]', 'E46:')
50
51endfunc
52