Execute(The vint handler should parse error messages correctly):
  :file! gxc.vim

  AssertEqual
  \ [
  \   {
  \     'lnum': 1,
  \     'col': 1,
  \     'text': 'Use scriptencoding when multibyte char exists (see :help :script encoding)',
  \     'type': 'W',
  \   },
  \   {
  \     'lnum': 3,
  \     'col': 17,
  \     'text': 'Use robust operators ''==#'' or ''==?'' instead of ''=='' (see Google VimScript Style Guide (Matching))',
  \     'type': 'W',
  \   },
  \   {
  \     'lnum': 3,
  \     'col': 8,
  \     'text': 'Make the scope explicit like ''l:filename'' (see Anti-pattern of vimrc (Scope of identifier))',
  \     'type': 'W',
  \   },
  \   {
  \     'lnum': 7,
  \     'col': 8,
  \     'text': 'Undefined variable: filename (see :help E738)',
  \     'type': 'W',
  \   },
  \ ],
  \ ale#handlers#gcc#HandleGCCFormat(347, [
  \   'gcc.vim:1:1: warning: Use scriptencoding when multibyte char exists (see :help :script encoding)',
  \   'gcc.vim:3:17: warning: Use robust operators `==#` or `==?` instead of `==` (see Google VimScript Style Guide (Matching))',
  \   'gcc.vim:3:8: style_problem: Make the scope explicit like `l:filename` (see Anti-pattern of vimrc (Scope of identifier))',
  \   'gcc.vim:7:8: warning: Undefined variable: filename (see :help E738)',
  \ ])