Before:
  runtime! ale_linters/yaml/yamllint.vim

After:
  call ale#linter#Reset()

Execute:
  AssertEqual
  \ [
  \   {
  \     'lnum': 1,
  \     'col': 1,
  \     'type': 'W',
  \     'text': 'missing document start "---"',
  \     'code': 'document-start',
  \   },
  \   {
  \     'lnum': 2,
  \     'col': 1,
  \     'type': 'E',
  \     'text': 'syntax error: expected the node content, but found ''<stream end>''',
  \   },
  \ ],
  \ ale_linters#yaml#yamllint#Handle(bufnr(''), [
  \   'something.yaml:1:1: [warning] missing document start "---" (document-start)',
  \   'something.yml:2:1: [error] syntax error: expected the node content, but found ''<stream end>''',
  \ ])