1" Tests for 'backspace' settings
2
3:func Exec(expr)
4  let str=''
5  try
6    exec a:expr
7  catch /.*/
8    let str=v:exception
9  endtry
10  return str
11:endfunc
12
13func Test_backspace_option()
14  set backspace=
15  call assert_equal('', &backspace)
16  set backspace=indent
17  call assert_equal('indent', &backspace)
18  set backspace=eol
19  call assert_equal('eol', &backspace)
20  set backspace=start
21  call assert_equal('start', &backspace)
22  " Add the value
23  set backspace=
24  set backspace=indent
25  call assert_equal('indent', &backspace)
26  set backspace+=eol
27  call assert_equal('indent,eol', &backspace)
28  set backspace+=start
29  call assert_equal('indent,eol,start', &backspace)
30  " Delete the value
31  set backspace-=indent
32  call assert_equal('eol,start', &backspace)
33  set backspace-=start
34  call assert_equal('eol', &backspace)
35  set backspace-=eol
36  call assert_equal('', &backspace)
37  " Check the error
38  call assert_equal(0, match(Exec('set backspace=ABC'), '.*E474'))
39  call assert_equal(0, match(Exec('set backspace+=def'), '.*E474'))
40  " NOTE: Vim doesn't check following error...
41  "call assert_equal(0, match(Exec('set backspace-=ghi'), '.*E474'))
42
43  " Check backwards compatibility with version 5.4 and earlier
44  set backspace=0
45  call assert_equal('0', &backspace)
46  set backspace=1
47  call assert_equal('1', &backspace)
48  set backspace=2
49  call assert_equal('2', &backspace)
50  call assert_false(match(Exec('set backspace=3'), '.*E474'))
51  call assert_false(match(Exec('set backspace=10'), '.*E474'))
52
53  " Cleared when 'compatible' is set
54  set compatible
55  call assert_equal('', &backspace)
56  set nocompatible viminfo+=nviminfo
57endfunc
58
59" vim: shiftwidth=2 sts=2 expandtab
60