Before:
  runtime! ale_linters/python/ty.vim

After:
  call ale#linter#Reset()

Execute(We should handle basic output from ty correctly):
  AssertEqual
  \ [
  \   {
  \     'lnum': 3,
  \     'col': 2,
  \     'end_lnum': 3,
  \     'end_col': 10,
  \     'code': 'TY001',
  \     'text': 'Type check failed',
  \     'type': 'E',
  \   },
  \   {
  \     'lnum': 6,
  \     'col': 4,
  \     'end_lnum': 6,
  \     'end_col': 7,
  \     'code': 'TY002',
  \     'text': 'Potential issue',
  \     'type': 'W',
  \   },
  \ ],
  \ ale_linters#python#ty#Handle(bufnr(''), [
  \   '[',
  \   '{"check_name":"TY001","description":"Type check failed","severity":"major","location":{"positions":{"begin":{"line":3,"column":2},"end":{"line":3,"column":10}}}},',
  \   '{"check_name":"TY002","description":"Potential issue","severity":"minor","location":{"positions":{"begin":{"line":6,"column":4},"end":{"line":6,"column":7}}}}',
  \   ']',
  \ ])

Execute(We should handle empty output from ty correctly):
  AssertEqual [], ale_linters#python#ty#Handle(bufnr(''), ['[]'])