Before:
  runtime ale_linters/elixir/dogma.vim

After:
  call ale#linter#Reset()

Execute(The dogma handler should parse lines correctly):

  AssertEqual
  \ [
  \   {
  \     'bufnr': 347,
  \     'lnum': 18,
  \     'col': 5,
  \     'text': 'Some error',
  \     'type': 'E',
  \   },
  \   {
  \     'bufnr': 347,
  \     'lnum': 19,
  \     'col': 7,
  \     'text': 'Some warning',
  \     'type': 'W',
  \   },
  \ ],
  \ ale_linters#elixir#dogma#Handle(347, [
  \   'This line should be ignored completely',
  \   'lib/filename.ex:18:5: C: Some error',
  \   'lib/filename.ex:19:7: R: Some warning',
  \ ])