Before:
  let b:tmp = has('win32') ? substitute($TMP, '\\', '\\\\', 'g') : $TMPDIR

  runtime ale_linters/elm/make.vim

After:
  unlet! b:tmp
  unlet! g:config_error_lines

  call ale#linter#Reset()

Execute(The elm make handler should parse general problems correctly):
  AssertEqual
  \ [
  \   {
  \     'lnum': 1,
  \     'type': 'E',
  \     'text': 'UNKNOWN IMPORT',
  \     'detail': "error details 1\n\nstyled details"
  \   }
  \ ],
  \ ale_linters#elm#make#Handle(347, [
  \   '{
  \      "type": "error",
  \      "path": "' . b:tmp . '/Module.elm",
  \      "title": "UNKNOWN IMPORT",
  \      "message": ["error details 1\n\n", { "string": "styled details" }]
  \    }'
  \ ])

Execute(The elm make handler should parse compilation errors correctly):
  AssertEqual
  \ [
  \   {
  \     'lnum': 404,
  \     'col': 1,
  \     'end_lnum': 408,
  \     'end_col': 18,
  \     'type': 'E',
  \     'text': 'TYPE MISMATCH',
  \     'detail': "error details 1\n\nstyled details"
  \   },
  \   {
  \     'lnum': 406,
  \     'col': 5,
  \     'end_lnum': 407,
  \     'end_col': 17,
  \     'type': 'E',
  \     'text': 'TYPE MISMATCH',
  \     'detail': "error details 2",
  \   },
  \   {
  \     'lnum': 406,
  \     'col': 5,
  \     'end_lnum': 406,
  \     'end_col': 93,
  \     'type': 'E',
  \     'text': 'TYPE MISMATCH',
  \     'detail': "error details 3",
  \   },
  \ ],
  \ ale_linters#elm#make#Handle(347, [
  \   '{
  \      "type": "compile-errors",
  \      "errors": [
  \        {
  \          "path": "' . b:tmp . '/Module.elm",
  \          "problems": [
  \            {
  \              "title": "TYPE MISMATCH",
  \              "message": ["error details 1\n\n", { "string": "styled details" }],
  \              "region": { "start": { "line": 404, "column": 1 }, "end": { "line": 408, "column": 18 } }
  \            },
  \            {
  \              "title": "TYPE MISMATCH",
  \              "message": ["error details 2"],
  \              "region": { "start": {"line": 406, "column": 5}, "end": {"line": 407, "column": 17 } }
  \            },
  \            {
  \              "title": "TYPE MISMATCH",
  \              "message": ["error details 3"],
  \              "region": { "start": { "line": 406, "column": 5}, "end": {"line": 406, "column": 93 } }
  \            }
  \          ]
  \        }
  \      ]
  \    }'
  \ ])

Execute(The elm make handler should put an error on the first line for compilation errors in imported modules):
  AssertEqual
  \ [
  \   {
  \     'lnum': 1,
  \     'type': 'E',
  \     'text': 'src/Module.elm:404 - TYPE MISMATCH',
  \     'detail': "src/Module.elm:404 -------\n\nerror details\n\nstyled details"
  \   },
  \ ],
  \ ale_linters#elm#make#Handle(347, [
  \   '{
  \      "type": "compile-errors",
  \      "errors": [
  \        {
  \          "path": "src/Module.elm",
  \          "problems": [
  \            {
  \              "title": "TYPE MISMATCH",
  \              "message": ["error details\n\n", { "string": "styled details" }],
  \              "region": { "start": { "line": 404, "column": 1 }, "end": { "line": 408, "column": 18 } }
  \            }
  \          ]
  \        }
  \      ]
  \    }'
  \ ])

Execute(The elm make handler should put an error on the first line if a line cannot be parsed):
  AssertEqual
  \ [
  \   {
  \     'lnum': 404,
  \     'col': 1,
  \     'end_lnum': 408,
  \     'end_col': 18,
  \     'type': 'E',
  \     'text': 'TYPE MISMATCH',
  \     'detail': "error details 1 styled details"
  \   },
  \   {
  \     'lnum': 1,
  \     'type': 'E',
  \     'text': 'Not JSON',
  \     'detail': "Not JSON\nAlso not JSON",
  \   },
  \ ],
  \ ale_linters#elm#make#Handle(347, [
  \   '{
  \      "type": "compile-errors",
  \      "errors": [
  \        {
  \          "path": "' . b:tmp . '/Module.elm",
  \          "problems": [
  \            {
  \              "title": "TYPE MISMATCH",
  \              "message": ["error details 1 ", { "string": "styled details" }],
  \              "region": { "start": { "line": 404, "column": 1 }, "end": { "line": 408, "column": 18 } }
  \            }
  \          ]
  \        }
  \      ]
  \    }',
  \    "Not JSON",
  \    "Also not JSON",
  \ ])