1  Before:
 2    Save g:ale_warn_about_trailing_whitespace
 3  
 4    let g:ale_warn_about_trailing_whitespace = 1
 5  
 6    runtime ale_linters/lua/luacheck.vim
 7  
 8  After:
 9    Restore
10    call ale#linter#Reset()
11  
12  Execute(The luacheck handler should parse lines correctly):
13    AssertEqual
14    \ [
15    \   {
16    \     'lnum': 1,
17    \     'col': 8,
18    \     'text': 'line contains trailing whitespace',
19    \     'code': 'W612',
20    \     'type': 'W',
21    \   },
22    \   {
23    \     'lnum': 3,
24    \     'col': 5,
25    \     'text': 'unused loop variable ''k''',
26    \     'code': 'W213',
27    \     'type': 'W',
28    \   },
29    \   {
30    \     'lnum': 3,
31    \     'col': 19,
32    \     'text': 'accessing undefined variable ''x''',
33    \     'code': 'W113',
34    \     'type': 'W',
35    \   },
36    \ ],
37    \ ale_linters#lua#luacheck#Handle(347, [
38    \   '    /file/path/here.lua:1:8: (W612) line contains trailing whitespace',
39    \   '    /file/path/here.lua:3:5: (W213) unused loop variable ''k''',
40    \   '    /file/path/here.lua:3:19: (W113) accessing undefined variable ''x''',
41    \ ])
42  
43  Execute(The luacheck handler should respect the warn_about_trailing_whitespace option):
44    let g:ale_warn_about_trailing_whitespace = 0
45  
46    AssertEqual
47    \ [
48    \   {
49    \     'lnum': 5,
50    \     'col': 43,
51    \     'text': 'unused argument ''g''',
52    \     'code': 'W212',
53    \     'type': 'W',
54    \   }
55    \ ],
56    \ ale_linters#lua#luacheck#Handle(347, [
57    \   '/file/path/here.lua:15:97: (W614) trailing whitespace in a comment',
58    \   '/file/path/here.lua:16:60: (W612) line contains trailing whitespace',
59    \   '/file/path/here.lua:17:1: (W611) line contains only whitespace',
60    \   '/file/path/here.lua:27:57: (W613) trailing whitespace in a string',
61    \   '/file/path/here.lua:5:43: (W212) unused argument ''g''',
62    \ ])