Execute(The pony handler should handle ponyc output):
  call ale#test#SetFilename('foo.pony')

  AssertEqual
  \ [
  \   {
  \     'filename': '/home/projects/Wombat.pony',
  \     'lnum': 22,
  \     'type': 'E',
  \     'col': 30,
  \     'text': 'can''t lookup private fields from outside the type',
  \   },
  \ ],
  \ ale#handlers#pony#HandlePonycFormat(bufnr(''), [
  \ 'Building builtin -> /usr/lib/pony/0.21.3/packages/builtin',
  \ 'Building . -> /home/projects',
  \ 'Error:',
  \ '/home/projects/Wombat.pony:22:30: can''t lookup private fields from outside the type',
  \ '                env.out.print(defaultWombat._hunger_level)',
  \ '                                           ^',
  \ ])
