Before:
  runtime! ale_linters/cloudformation/cfn_python_lint.vim
  call ale#test#SetFilename('sample.template.yaml')

After:
  call ale#linter#Reset()

Execute(The cfn_python_lint handler should parse items correctly):
  AssertEqual
  \ [
  \   {
  \     'lnum': 96,
  \     'col': 7,
  \     'end_lnum': 96,
  \     'end_col': 15,
  \     'text': 'Property Resources/Sample/Properties/FromPort should be of type Integer',
  \     'code': 'E3012',
  \     'type': 'E',
  \   },
  \   {
  \     'lnum': 97,
  \     'col': 7,
  \     'end_lnum': 97,
  \     'end_col': 15,
  \     'text': 'AllowedPattern and/or AllowedValues for Parameter should be specified at Parameters/SampleIpAddress. Example for AllowedPattern "^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/([0-9]|[1-2][0-9]|3[0-2]))$"',
  \     'code': 'W2509',
  \     'type': 'W',
  \   },
  \ ],
  \ ale_linters#cloudformation#cfn_python_lint#Handle(bufnr(''), [
  \ fnamemodify(tempname(), ':h') . '/sample.template.yaml:96:7:96:15: [E3012] Property Resources/Sample/Properties/FromPort should be of type Integer',
  \ fnamemodify(tempname(), ':h') . '/sample.template.yaml:97:7:97:15: [W2509] AllowedPattern and/or AllowedValues for Parameter should be specified at Parameters/SampleIpAddress. Example for AllowedPattern "^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/([0-9]|[1-2][0-9]|3[0-2]))$"',
  \ ])