+Before:
+ runtime! ale_linters/haskell/hlint.vim
+
+After:
+ call ale#linter#Reset()
+
+Execute(The hlint handler should parse items correctly):
+ AssertEqual
+ \ [
+ \ {
+ \ 'lnum': 1,
+ \ 'col': 4,
+ \ 'end_lnum': 3,
+ \ 'end_col': 2,
+ \ 'text': 'Error: Do something. Found: [Char] Why not: String',
+ \ 'type': 'E',
+ \ },
+ \ {
+ \ 'lnum': 2,
+ \ 'col': 4,
+ \ 'end_lnum': 7,
+ \ 'end_col': 2,
+ \ 'text': 'Warning: Do something. Found: [Char] Why not: String',
+ \ 'type': 'W',
+ \ },
+ \ {
+ \ 'lnum': 73,
+ \ 'col': 25,
+ \ 'end_lnum': 73,
+ \ 'end_col': 31,
+ \ 'text': 'Suggestion: Use String. Found: [Char] Why not: String',
+ \ 'type': 'I',
+ \ },
+ \ ],
+ \ ale_linters#haskell#hlint#Handle(bufnr(''), [json_encode([
+ \ {
+ \ 'module': 'Main',
+ \ 'decl': 'foo',
+ \ 'severity': 'Error',
+ \ 'hint': 'Do something',
+ \ 'file': '-',
+ \ 'startLine': 1,
+ \ 'startColumn': 4,
+ \ 'endLine': 3,
+ \ 'endColumn': 2,
+ \ 'from': '[Char]',
+ \ 'to': 'String',
+ \ },
+ \ {
+ \ 'module': 'Main',
+ \ 'decl': 'foo',
+ \ 'severity': 'Warning',
+ \ 'hint': 'Do something',
+ \ 'file': '-',
+ \ 'startLine': 2,
+ \ 'startColumn': 4,
+ \ 'endLine': 7,
+ \ 'endColumn': 2,
+ \ 'from': '[Char]',
+ \ 'to': 'String',
+ \ },
+ \ {
+ \ 'module': 'Main',
+ \ 'decl': 'myFocusedBorderColor',
+ \ 'severity': 'Suggestion',
+ \ 'hint': 'Use String',
+ \ 'file': '-',
+ \ 'startLine': 73,
+ \ 'startColumn': 25,
+ \ 'endLine': 73,
+ \ 'endColumn': 31,
+ \ 'from': '[Char]',
+ \ 'to': 'String',
+ \ },
+ \ ])])
+
+Execute(The hlint handler should handle empty output):
+ AssertEqual
+ \ [],
+ \ ale_linters#haskell#hlint#Handle(bufnr(''), [])