-- | A testing tool for replaying recorded client logs back to a server,
-- and validating that the server output matches up with another log.
module Language.Haskell.LSP.Test.Recorded
- ( replay,
- sendNextRequest
+ ( replaySession
)
where
+import Prelude hiding (id)
import Control.Concurrent
-import Control.Monad.Trans.Class
-import Control.Monad.Trans.Reader
-import Control.Monad.Trans.State
import Control.Monad.IO.Class
import qualified Data.ByteString.Lazy.Char8 as B
import Language.Haskell.LSP.Capture
import Language.Haskell.LSP.Messages
-import qualified Language.Haskell.LSP.Types as LSP
+import Language.Haskell.LSP.Types hiding (error)
import Data.Aeson
+import Data.List
import Data.Maybe
import Control.Lens
import Control.Monad
import System.IO
-import System.Directory
import System.FilePath
-import System.Process
+import Language.Haskell.LSP.Test
import Language.Haskell.LSP.Test.Files
import Language.Haskell.LSP.Test.Parsing
-data SessionContext = SessionContext
- {
- reqSema :: MVar LSP.LspId,
- rspSema :: MVar LSP.LspIdRsp,
- serverIn :: Handle
- }
-type Session = StateT [FromClientMessage] (ReaderT SessionContext IO)
-- | Replays a recorded client output and
-- makes sure it matches up with an expected response.
-replay :: FilePath -- ^ The recorded session directory.
- -> Session a
- -> IO ()
-replay sessionDir session = do
+replaySession :: FilePath -- ^ The recorded session directory.
+ -> IO Bool
+replaySession sessionDir = do
- let sessionFp = sessionDir </> "session.log"
-
- -- need to keep hold of current directory since haskell-lsp changes it
- prevRootDir <- getCurrentDirectory
-
- (Just serverIn, Just serverOut, _, serverProc) <- createProcess
- (proc "hie" ["--lsp", "-l", "/tmp/hie.log"]) { std_in = CreatePipe
- , std_out = CreatePipe
- }
-
- hSetBuffering serverIn NoBuffering
- hSetBuffering serverOut NoBuffering
-
- -- whether to send the next request
- reqSema <- newEmptyMVar :: IO (MVar LSP.LspIdRsp)
- -- whether to send the next response
- rspSema <- newEmptyMVar :: IO (MVar LSP.LspId)
- let semas = (reqSema, rspSema)
-
- entries <- B.lines <$> B.readFile sessionFp
+ entries <- B.lines <$> B.readFile (sessionDir </> "session.log")
-- decode session
let unswappedEvents = map (fromJust . decode) entries
events <- swapFiles sessionDir unswappedEvents
let clientEvents = map (\(FromClient _ msg) -> msg) $ filter isClientMsg events
+ serverEvents = map (\(FromServer _ msg) -> msg) $ filter isServerMsg events
requestMap = getRequestMap clientEvents
- -- listen to server
- forkIO $ listenServer serverOut requestMap semas
- runReaderT (runStateT session clientEvents) (SessionContext rspSema reqSema serverIn)
+ reqSema <- newEmptyMVar
+ rspSema <- newEmptyMVar
+ passVar <- newEmptyMVar :: IO (MVar Bool)
- terminateProcess serverProc
+ forkIO $ runSessionWithHandler (listenServer serverEvents requestMap reqSema rspSema passVar) sessionDir $
+ sendMessages clientEvents reqSema rspSema
- -- restore directory
- setCurrentDirectory prevRootDir
+ takeMVar passVar
where
isClientMsg (FromClient _ _) = True
isServerMsg (FromServer _ _) = True
isServerMsg _ = False
-sendNextRequest :: Session ()
-sendNextRequest = do
- (nextMsg:remainingMsgs) <- get
- put remainingMsgs
+sendMessages :: [FromClientMessage] -> MVar LspId -> MVar LspIdRsp -> Session ()
+sendMessages [] _ _ = return ()
+sendMessages (nextMsg:remainingMsgs) reqSema rspSema =
case nextMsg of
ReqInitialize m -> request m
ReqShutdown m -> request m
NotWillSaveTextDocument m -> notification m
NotDidSaveTextDocument m -> notification m
NotDidChangeWatchedFiles m -> notification m
- UnknownFromClientMessage m ->
- error $ "Unknown message was recorded from the client" ++ show m
+ UnknownFromClientMessage m -> liftIO $ error $ "Unknown message was recorded from the client" ++ show m
where
-- TODO: May need to prevent premature exit notification being sent
- notification msg@(LSP.NotificationMessage _ LSP.Exit _) = do
- context <- lift ask
-
- liftIO $ do
- putStrLn "Will send exit notification soon"
- threadDelay 10000000
- B.hPut (serverIn context) $ addHeader (encode msg)
+ notification msg@(NotificationMessage _ Exit _) = do
+ liftIO $ putStrLn "Will send exit notification soon"
+ liftIO $ threadDelay 10000000
+ sendNotification' msg
- notification msg@(LSP.NotificationMessage _ m _) = do
- context <- lift ask
+ liftIO $ error "Done"
- liftIO $ B.hPut (serverIn context) $ addHeader (encode msg)
+ notification msg@(NotificationMessage _ m _) = do
+ sendNotification' msg
liftIO $ putStrLn $ "Sent a notification " ++ show m
- sendNextRequest
-
- request msg@(LSP.RequestMessage _ id m _) = do
- context <- lift ask
+ sendMessages remainingMsgs reqSema rspSema
- liftIO $ do
- when (m == LSP.TextDocumentDocumentSymbol) $ threadDelay 5000000
+ request msg@(RequestMessage _ id m _) = do
+ liftIO $ print $ addHeader $ encode msg
- B.hPut (serverIn context) $ addHeader (encode msg)
- putStrLn $ "Sent a request id " ++ show id ++ ": " ++ show m ++ "\nWaiting for a response"
+ sendRequest' msg
+ liftIO $ putStrLn $ "Sent a request id " ++ show id ++ ": " ++ show m ++ "\nWaiting for a response"
- rspId <- takeMVar (rspSema context)
- when (LSP.responseId id /= rspId) $
- error $ "Expected id " ++ show id ++ ", got " ++ show rspId
+ rsp <- liftIO $ takeMVar rspSema
+ when (responseId id /= rsp) $
+ error $ "Expected id " ++ show id ++ ", got " ++ show rsp
- response msg@(LSP.ResponseMessage _ id _ _) = do
- context <- lift ask
+ sendMessages remainingMsgs reqSema rspSema
- liftIO $ do
- putStrLn $ "Waiting for request id " ++ show id ++ " from the server"
- reqId <- takeMVar (reqSema context)
- if LSP.responseId reqId /= id
+ response msg@(ResponseMessage _ id _ _) = do
+ liftIO $ putStrLn $ "Waiting for request id " ++ show id ++ " from the server"
+ reqId <- liftIO $ takeMVar reqSema
+ if responseId reqId /= id
then error $ "Expected id " ++ show reqId ++ ", got " ++ show reqId
else do
- B.hPut (serverIn context) $ addHeader (encode msg)
- putStrLn $ "Sent response to request id " ++ show id
+ sendResponse' msg
+ liftIO $ putStrLn $ "Sent response to request id " ++ show id
- sendNextRequest
+ sendMessages remainingMsgs reqSema rspSema
--- | Listens to the server output, makes sure it matches the record and
--- signals any semaphores
-listenServer :: Handle -> RequestMap -> (MVar LSP.LspIdRsp, MVar LSP.LspId) -> IO ()
-listenServer h reqMap semas@(reqSema, rspSema) = do
- msgBytes <- getNextMessage h
+isNotification :: FromServerMessage -> Bool
+isNotification (NotPublishDiagnostics _) = True
+isNotification (NotLogMessage _) = True
+isNotification (NotShowMessage _) = True
+isNotification (NotCancelRequestFromServer _) = True
+isNotification _ = False
+listenServer :: [FromServerMessage] -> RequestMap -> MVar LspId -> MVar LspIdRsp -> MVar Bool -> Handle -> Session ()
+listenServer [] _ _ _ passVar _ = liftIO $ putMVar passVar True
+listenServer expectedMsgs reqMap reqSema rspSema passVar serverOut = do
+ msgBytes <- liftIO $ getNextMessage serverOut
let msg = decodeFromServerMsg reqMap msgBytes
- print msg
-
case msg of
ReqRegisterCapability m -> request m
ReqApplyWorkspaceEdit m -> request m
NotTelemetry m -> notification m
NotCancelRequestFromServer m -> notification m
- listenServer h reqMap semas
+ if inRightOrder msg expectedMsgs
+ then listenServer (delete msg expectedMsgs) reqMap reqSema rspSema passVar serverOut
+ else liftIO $ do
+ putStrLn "Out of order"
+ putStrLn "Got:"
+ print msg
+ putStrLn "Expected one of:"
+ mapM_ print $ takeWhile (not . isNotification) expectedMsgs
+ print $ head $ dropWhile (not . isNotification) expectedMsgs
+ putMVar passVar False
where
- response :: Show a => LSP.ResponseMessage a -> IO ()
+ response :: Show a => ResponseMessage a -> Session ()
response res = do
- putStrLn $ "Got response for id " ++ show (res ^. LSP.id)
+ liftIO $ putStrLn $ "Got response for id " ++ show (res ^. id)
- print res
+ liftIO $ print res
- putMVar reqSema (res ^. LSP.id) -- unblock the handler waiting to send a request
+ liftIO $ putMVar rspSema (res ^. id) -- unblock the handler waiting to send a request
- request :: Show a => LSP.RequestMessage LSP.ServerMethod a b -> IO ()
+ request :: (Show a, Show b) => RequestMessage ServerMethod a b -> Session ()
request req = do
- putStrLn
+ liftIO
+ $ putStrLn
$ "Got request for id "
- ++ show (req ^. LSP.id)
+ ++ show (req ^. id)
++ " "
- ++ show (req ^. LSP.method)
+ ++ show (req ^. method)
- print req
+ liftIO $ print req
- putMVar rspSema (req ^. LSP.id) -- unblock the handler waiting for a response
+ liftIO $ putMVar reqSema (req ^. id) -- unblock the handler waiting for a response
- notification :: Show a => LSP.NotificationMessage LSP.ServerMethod a -> IO ()
+ notification :: Show a => NotificationMessage ServerMethod a -> Session ()
notification n = do
- putStrLn $ "Got notification " ++ show (n ^. LSP.method)
- print n
-
- -- lift
- -- $ putStrLn
- -- $ show (length (filter isNotification expectedMsgs) - 1)
- -- ++ " notifications remaining"
-
- -- checkOrder msg = unless (inRightOrder msg expectedMsgs) $ failSession
- -- ( "Out of order\nExpected\n"
- -- ++ show firstExpected
- -- ++ "\nGot\n"
- -- ++ show msg
- -- ++ "\n"
- -- )
-
- -- markReceived :: FromServerMessage -> Session [FromServerMessage]
- -- markReceived msg =
- -- let new = delete msg expectedMsgs
- -- in if new == expectedMsgs
- -- then failSession ("Unexpected message: " ++ show msg) >> return new
- -- else return new
-
- -- firstExpected = head $ filter (not . isNotification) expectedMsgs
+ liftIO $ putStrLn $ "Got notification " ++ show (n ^. method)
+ liftIO $ print n
+
+ liftIO
+ $ putStrLn
+ $ show (length (filter isNotification expectedMsgs) - 1)
+ ++ " notifications remaining"
+
-isNotification :: FromServerMessage -> Bool
-isNotification (NotPublishDiagnostics _) = True
-isNotification (NotLogMessage _) = True
-isNotification (NotShowMessage _) = True
-isNotification (NotCancelRequestFromServer _) = True
-isNotification _ = False
-- TODO: QuickCheck tests?
-- | Checks wether or not the message appears in the right order
| received == expected = True
| isNotification expected = inRightOrder received msgs
| otherwise = False
\ No newline at end of file
-
--- | The internal monad for tests that can fail or pass,
--- ending execution early.
--- type Session = ReaderT (MVar Bool) IO
-
--- -- TODO: Make return type polymoprhic more like error
--- failSession :: String -> Session ()
--- failSession reason = do
--- lift $ putStrLn reason
--- passVar <- ask
--- lift $ putMVar passVar False
-
--- passSession :: Session ()
--- passSession = do
--- passVar <- ask
--- lift $ putMVar passVar True
\ No newline at end of file
projects / lsp-test.git / blobdiff