module Language.Haskell.LSP.Test.Exceptions where
import Control.Exception
-import Language.Haskell.LSP.Messages
import Language.Haskell.LSP.Types
import Data.Aeson
import Data.Aeson.Encode.Pretty
import qualified Data.ByteString.Lazy.Char8 as B
-- | An exception that can be thrown during a 'Haskell.LSP.Test.Session.Session'
-data SessionException = Timeout
+data SessionException = Timeout (Maybe FromServerMessage)
| NoContentLengthHeader
| UnexpectedMessage String FromServerMessage
| ReplayOutOfOrder FromServerMessage [FromServerMessage]
| UnexpectedDiagnostics
| IncorrectApplyEditRequest String
- | UnexpectedResponseError LspIdRsp ResponseError
+ | UnexpectedResponseError SomeLspId ResponseError
| UnexpectedServerTermination
+ | IllegalInitSequenceMessage FromServerMessage
deriving Eq
instance Exception SessionException
instance Show SessionException where
- show Timeout = "Timed out waiting to receive a message from the server."
+ show (Timeout lastMsg) =
+ "Timed out waiting to receive a message from the server." ++
+ case lastMsg of
+ Just msg -> "\nLast message received:\n" ++ B.unpack (encodePretty msg)
+ Nothing -> mempty
show NoContentLengthHeader = "Couldn't read Content-Length header from the server."
show (UnexpectedMessage expected lastMsg) =
"Received an unexpected message from the server:\n" ++
"Was parsing: " ++ expected ++ "\n" ++
- "Last message received: " ++ show lastMsg
+ "But the last message received was:\n" ++ B.unpack (encodePretty lastMsg)
show (ReplayOutOfOrder received expected) =
let expected' = nub expected
getJsonDiff = lines . B.unpack . encodePretty
show (UnexpectedResponseError lid e) = "Received an exepected error in a response for id " ++ show lid ++ ":\n"
++ show e
show UnexpectedServerTermination = "Language server unexpectedly terminated"
+ show (IllegalInitSequenceMessage msg) =
+ "Received an illegal message between the initialize request and response:\n"
+ ++ B.unpack (encodePretty msg)
-- | A predicate that matches on any 'SessionException'
anySessionException :: SessionException -> Bool