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Add failing test when file contains a large amount of comments #243

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13 changes: 13 additions & 0 deletions tests/Elm/Parser/FileTests.elm
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Original file line number Diff line number Diff line change
Expand Up @@ -468,4 +468,17 @@ port sendResponse : String -> Cmd msg
, comments = [ Node { start = { row = 6, column = 1 }, end = { row = 7, column = 3 } } "{-| foo\n-}" ]
}
)
, test "A file with a large number of comments should not create a stack overflow" <|
\() ->
let
comments : String
comments =
String.repeat 3000 "-- a\n"
in
("""module Foo exposing (..)
a = 1
""" ++ comments)
|> Elm.Parser.parseToFile
|> Result.map (\ast -> List.length ast.comments)
|> Expect.equal (Ok 3000)
]