Execute(The checkstyle handler should parse lines correctly):
  runtime ale_linters/java/checkstyle.vim

  AssertEqual
  \ [
  \   {
  \     'lnum': 101,
  \     'text': "'method def rcurly' has incorrect indentation level 4, expected level should be 2. [Indentation]",
  \     'type': 'W',
  \   },
  \   {
  \     'lnum': 63,
  \     'col': 3,
  \     'text': "Missing a Javadoc comment. [JavadocMethod]",
  \     'type': 'W',
  \   },
  \ ],
  \ ale_linters#java#checkstyle#Handle(666, [
  \   "[WARN] whatever:101: 'method def rcurly' has incorrect indentation level 4, expected level should be 2. [Indentation]",
  \   "[WARN] whatever:63:3: Missing a Javadoc comment. [JavadocMethod]",
  \ ])