Execute(The ghc handler should handle hdevtools output):
  call ale#test#SetFilename('foo.hs')

  AssertEqual
  \ [
  \   {
  \     'lnum': 147,
  \     'type': 'W',
  \     'col': 62,
  \     'text': '• Couldnt match type ‘a -> T.Text’ with ‘T.Text’ Expected type: [T.Text]',
  \     'detail': join([
  \       '• Couldnt match type ‘a -> T.Text’ with ‘T.Text’',
  \       '  Expected type: [T.Text]',
  \     ], "\n"),
  \   },
  \ ],
  \ ale#handlers#haskell#HandleGHCFormat(bufnr(''), [
  \ 'foo.hs:147:62: warning:',
  \ '• Couldnt match type ‘a -> T.Text’ with ‘T.Text’',
  \ '  Expected type: [T.Text]',
  \ ])

Execute(The ghc handler should handle ghc 8 output):
  call ale#test#SetFilename('src/Appoint/Lib.hs')

  AssertEqual
  \ [
  \   {
  \     'lnum': 6,
  \     'type': 'E',
  \     'col': 1,
  \     'text': 'Failed to load interface for ‘GitHub.Data’ Use -v to see a list of the files searched for.',
  \     'detail': join([
  \       '    Failed to load interface for ‘GitHub.Data’',
  \       '    Use -v to see a list of the files searched for.',
  \     ], "\n"),
  \   },
  \   {
  \     'lnum': 7,
  \     'type': 'W',
  \     'col': 1,
  \     'text': 'Failed to load interface for ‘GitHub.Endpoints.PullRequests’ Use -v to see a list of the files searched for.',
  \     'detail': join([
  \       '    Failed to load interface for ‘GitHub.Endpoints.PullRequests’',
  \       '    Use -v to see a list of the files searched for.',
  \     ], "\n"),
  \   },
  \ ],
  \ ale#handlers#haskell#HandleGHCFormat(bufnr(''), [
  \ '',
  \ ale#path#Simplify('src/Appoint/Lib.hs') . ':6:1: error:',
  \ '    Failed to load interface for ‘GitHub.Data’',
  \ '    Use -v to see a list of the files searched for.',
  \ '',
  \ ale#path#Simplify('src/Appoint/Lib.hs') . ':7:1: warning:',
  \ '    Failed to load interface for ‘GitHub.Endpoints.PullRequests’',
  \ '    Use -v to see a list of the files searched for.',
  \ ])

Execute(The ghc handler should handle ghc 7 output):
  call ale#test#SetFilename('src/Main.hs')

  AssertEqual
  \ [
  \   {
  \     'lnum': 168,
  \     'type': 'E',
  \     'col': 1,
  \     'text': 'parse error (possibly incorrect indentation or mismatched brackets)',
  \     'detail': join([
  \       '    parse error (possibly incorrect indentation or mismatched brackets)',
  \     ], "\n"),
  \   },
  \   {
  \     'lnum': 84,
  \     'col': 1,
  \     'type': 'W',
  \     'text': 'Top-level binding with no type signature: myLayout :: Choose Tall (Choose (Mirror Tall) Full) a',
  \     'detail': join([
  \       '    Top-level binding with no type signature:',
  \       '    myLayout :: Choose Tall (Choose (Mirror Tall) Full) a',
  \     ], "\n"),
  \   },
  \   {
  \     'lnum': 94,
  \     'col': 5,
  \     'type': 'E',
  \     'text': 'Some other error',
  \     'detail': join([
  \       '  Some other error',
  \     ], "\n"),
  \   },
  \ ],
  \ ale#handlers#haskell#HandleGHCFormat(bufnr(''), [
  \ ale#path#Simplify('src/Main.hs') . ':168:1:',
  \ '    parse error (possibly incorrect indentation or mismatched brackets)',
  \ ale#path#Simplify('src/Main.hs') . ':84:1:Warning:',
  \ '    Top-level binding with no type signature:',
  \ '    myLayout :: Choose Tall (Choose (Mirror Tall) Full) a',
  \ ale#path#Simplify('src/Main.hs') . ':94:5:Error:',
  \ '  Some other error',
  \ ])

Execute(The ghc handler should handle stack 1.5.1 output):
  call ale#test#SetFilename('src/Main.hs')

  AssertEqual
  \ [
  \   {
  \     'lnum': 160,
  \     'col': 14,
  \     'type': 'E',
  \     'text': '• Expecting one fewer arguments to ‘Exp’ Expected kind ‘k0 -> *’, but ‘Exp’ has kind ‘*’ • In the type ‘Exp a’ | 160 | pattern F :: Exp a |              ^^^^^',
  \     'detail': join([
  \       '        • Expecting one fewer arguments to ‘Exp’',
  \       '          Expected kind ‘k0 -> *’, but ‘Exp’ has kind ‘*’',
  \       '        • In the type ‘Exp a’',
  \       '        |',
  \       '    160 | pattern F :: Exp a',
  \       '        |              ^^^^^',
  \     ], "\n"),
  \   },
  \ ],
  \ ale#handlers#haskell#HandleGHCFormat(bufnr(''), [
  \   '    ' . ale#path#Simplify('src/Main.hs') . ':160:14: error:',
  \   '        • Expecting one fewer arguments to ‘Exp’',
  \   '          Expected kind ‘k0 -> *’, but ‘Exp’ has kind ‘*’',
  \   '        • In the type ‘Exp a’',
  \   '        |',
  \   '    160 | pattern F :: Exp a',
  \   '        |              ^^^^^',
  \ ])