Description : A functional testing framework for LSP servers.
Maintainer : luke_lau@icloud.com
Stability : experimental
-Portability : POSIX
+Portability : non-portable
Provides the framework to start functionally testing
<https://github.com/Microsoft/language-server-protocol Language Server Protocol servers>.
, module Language.Haskell.LSP.Test.Parsing
-- * Utilities
-- | Quick helper functions for common tasks.
+
-- ** Initialization
, initializeResponse
-- ** Documents
import Language.Haskell.LSP.Test.Parsing
import Language.Haskell.LSP.Test.Session
import Language.Haskell.LSP.Test.Server
+import System.Environment
import System.IO
import System.Directory
import System.FilePath
-import qualified Data.Rope.UTF16 as Rope
-- | Starts a new session.
--
-> FilePath -- ^ The filepath to the root directory for the session.
-> Session a -- ^ The session to run.
-> IO a
-runSessionWithConfig config serverExe caps rootDir session = do
+runSessionWithConfig config' serverExe caps rootDir session = do
pid <- getCurrentProcessID
absRootDir <- canonicalizePath rootDir
+ config <- envOverrideConfig config'
+
let initializeParams = InitializeParams (Just pid)
(Just $ T.pack absRootDir)
(Just $ filePathToUri absRootDir)
withServer serverExe (logStdErr config) $ \serverIn serverOut serverProc ->
runSessionWithHandles serverIn serverOut serverProc listenServer config caps rootDir exitServer $ do
-- Wrap the session around initialize and shutdown calls
- initRspMsg <- request Initialize initializeParams :: Session InitializeResponse
+ -- initRspMsg <- sendRequest Initialize initializeParams :: Session InitializeResponse
+ initReqId <- sendRequest Initialize initializeParams
+
+ -- Because messages can be sent in between the request and response,
+ -- collect them and then...
+ (inBetween, initRspMsg) <- manyTill_ anyMessage (responseForId initReqId)
- liftIO $ maybe (return ()) (putStrLn . ("Error while initializing: " ++) . show ) (initRspMsg ^. LSP.error)
+ case initRspMsg ^. LSP.result of
+ Left error -> liftIO $ putStrLn ("Error while initializing: " ++ show error)
+ Right _ -> pure ()
initRspVar <- initRsp <$> ask
liftIO $ putMVar initRspVar initRspMsg
Just cfg -> sendNotification WorkspaceDidChangeConfiguration (DidChangeConfigurationParams cfg)
Nothing -> return ()
+ -- ... relay them back to the user Session so they can match on them!
+ -- As long as they are allowed.
+ forM_ inBetween checkLegalBetweenMessage
+ msgChan <- asks messageChan
+ liftIO $ writeList2Chan msgChan (ServerMessage <$> inBetween)
+
-- Run the actual test
- result <- session
- return result
+ session
where
-- | Asks the server to shutdown and exit politely
exitServer :: Session ()
(RspShutdown _) -> return ()
_ -> listenServer serverOut context
+ -- | Is this message allowed to be sent by the server between the intialize
+ -- request and response?
+ -- https://microsoft.github.io/language-server-protocol/specifications/specification-3-15/#initialize
+ checkLegalBetweenMessage :: FromServerMessage -> Session ()
+ checkLegalBetweenMessage (NotShowMessage _) = pure ()
+ checkLegalBetweenMessage (NotLogMessage _) = pure ()
+ checkLegalBetweenMessage (NotTelemetry _) = pure ()
+ checkLegalBetweenMessage (ReqShowMessage _) = pure ()
+ checkLegalBetweenMessage msg = throw (IllegalInitSequenceMessage msg)
+
+ -- | Check environment variables to override the config
+ envOverrideConfig :: SessionConfig -> IO SessionConfig
+ envOverrideConfig cfg = do
+ logMessages' <- fromMaybe (logMessages cfg) <$> checkEnv "LSP_TEST_LOG_MESSAGES"
+ logStdErr' <- fromMaybe (logStdErr cfg) <$> checkEnv "LSP_TEST_LOG_STDERR"
+ return $ cfg { logMessages = logMessages', logStdErr = logStdErr' }
+ where checkEnv :: String -> IO (Maybe Bool)
+ checkEnv s = fmap convertVal <$> lookupEnv s
+ convertVal "0" = False
+ convertVal _ = True
+
-- | The current text contents of a document.
documentContents :: TextDocumentIdentifier -> Session T.Text
documentContents doc = do
vfs <- vfs <$> get
- let file = vfs Map.! toNormalizedUri (doc ^. uri)
- return $ Rope.toText $ Language.Haskell.LSP.VFS._text file
+ let file = vfsMap vfs Map.! toNormalizedUri (doc ^. uri)
+ return (virtualFileText file)
-- | Parses an ApplyEditRequest, checks that it is for the passed document
-- and returns the new content
n :: DidOpenTextDocumentNotification
n = NotificationMessage "2.0" TextDocumentDidOpen params'
oldVFS <- vfs <$> get
- newVFS <- liftIO $ openVFS oldVFS n
+ let (newVFS,_) = openVFS oldVFS n
modify (\s -> s { vfs = newVFS })
sendMessage n
n :: DidCloseTextDocumentNotification
n = NotificationMessage "2.0" TextDocumentDidClose params'
oldVFS <- vfs <$> get
- newVFS <- liftIO $ closeVFS oldVFS n
+ let (newVFS,_) = closeVFS oldVFS n
modify (\s -> s { vfs = newVFS })
sendMessage n
n :: DidChangeTextDocumentNotification
n = NotificationMessage "2.0" TextDocumentDidChange params'
oldVFS <- vfs <$> get
- newVFS <- liftIO $ changeFromClientVFS oldVFS n
+ let (newVFS,_) = changeFromClientVFS oldVFS n
modify (\s -> s { vfs = newVFS })
sendMessage n
-- | Returns the symbols in a document.
getDocumentSymbols :: TextDocumentIdentifier -> Session (Either [DocumentSymbol] [SymbolInformation])
getDocumentSymbols doc = do
- ResponseMessage _ rspLid mRes mErr <- request TextDocumentDocumentSymbol (DocumentSymbolParams doc) :: Session DocumentSymbolsResponse
- maybe (return ()) (throw . UnexpectedResponseError rspLid) mErr
- case mRes of
- Just (DSDocumentSymbols (List xs)) -> return (Left xs)
- Just (DSSymbolInformation (List xs)) -> return (Right xs)
- Nothing -> Prelude.error "No result and no error in DocumentSymbolsResponse"
+ ResponseMessage _ rspLid res <- request TextDocumentDocumentSymbol (DocumentSymbolParams doc Nothing) :: Session DocumentSymbolsResponse
+ case res of
+ Right (DSDocumentSymbols (List xs)) -> return (Left xs)
+ Right (DSSymbolInformation (List xs)) -> return (Right xs)
+ Left err -> throw (UnexpectedResponseError rspLid err)
-- | Returns the code actions in the specified range.
getCodeActions :: TextDocumentIdentifier -> Range -> Session [CAResult]
getCodeActions doc range = do
ctx <- getCodeActionContext doc
- rsp <- request TextDocumentCodeAction (CodeActionParams doc range ctx)
+ rsp <- request TextDocumentCodeAction (CodeActionParams doc range ctx Nothing)
case rsp ^. result of
- Just (List xs) -> return xs
- _ -> throw (UnexpectedResponseError (rsp ^. LSP.id) (fromJust $ rsp ^. LSP.error))
+ Right (List xs) -> return xs
+ Left error -> throw (UnexpectedResponseError (rsp ^. LSP.id) error)
-- | Returns all the code actions in a document by
-- querying the code actions at each of the current
where
go :: CodeActionContext -> [CAResult] -> Diagnostic -> Session [CAResult]
go ctx acc diag = do
- ResponseMessage _ rspLid mRes mErr <- request TextDocumentCodeAction (CodeActionParams doc (diag ^. range) ctx)
+ ResponseMessage _ rspLid res <- request TextDocumentCodeAction (CodeActionParams doc (diag ^. range) ctx Nothing)
- case mErr of
- Just e -> throw (UnexpectedResponseError rspLid e)
- Nothing ->
- let Just (List cmdOrCAs) = mRes
- in return (acc ++ cmdOrCAs)
+ case res of
+ Left e -> throw (UnexpectedResponseError rspLid e)
+ Right (List cmdOrCAs) -> pure (acc ++ cmdOrCAs)
getCodeActionContext :: TextDocumentIdentifier -> Session CodeActionContext
getCodeActionContext doc = do
executeCommand :: Command -> Session ()
executeCommand cmd = do
let args = decode $ encode $ fromJust $ cmd ^. arguments
- execParams = ExecuteCommandParams (cmd ^. command) args
+ execParams = ExecuteCommandParams (cmd ^. command) args Nothing
request_ WorkspaceExecuteCommand execParams
-- | Executes a code action.
-- | Adds the current version to the document, as tracked by the session.
getVersionedDoc :: TextDocumentIdentifier -> Session VersionedTextDocumentIdentifier
getVersionedDoc (TextDocumentIdentifier uri) = do
- fs <- vfs <$> get
+ fs <- vfsMap . vfs <$> get
let ver =
case fs Map.!? toNormalizedUri uri of
- Just (VirtualFile v _ _) -> Just v
+ Just vf -> Just (virtualFileVersion vf)
_ -> Nothing
return (VersionedTextDocumentIdentifier uri ver)
-- | Returns the completions for the position in the document.
getCompletions :: TextDocumentIdentifier -> Position -> Session [CompletionItem]
getCompletions doc pos = do
- rsp <- request TextDocumentCompletion (TextDocumentPositionParams doc pos)
+ rsp <- request TextDocumentCompletion (TextDocumentPositionParams doc pos Nothing)
case getResponseResult rsp of
Completions (List items) -> return items
-> Session [Location] -- ^ The locations of the references.
getReferences doc pos inclDecl =
let ctx = ReferenceContext inclDecl
- params = ReferenceParams doc pos ctx
+ params = ReferenceParams doc pos ctx Nothing
in getResponseResult <$> request TextDocumentReferences params
-- | Returns the definition(s) for the term at the specified position.
-> Position -- ^ The position the term is at.
-> Session [Location] -- ^ The location(s) of the definitions
getDefinitions doc pos = do
- let params = TextDocumentPositionParams doc pos
+ let params = TextDocumentPositionParams doc pos Nothing
rsp <- request TextDocumentDefinition params :: Session DefinitionResponse
case getResponseResult rsp of
SingleLoc loc -> pure [loc]
-> Position -- ^ The position the term is at.
-> Session [Location] -- ^ The location(s) of the definitions
getTypeDefinitions doc pos =
- let params = TextDocumentPositionParams doc pos
+ let params = TextDocumentPositionParams doc pos Nothing
in getResponseResult <$> request TextDocumentTypeDefinition params
-- | Renames the term at the specified position.
rename :: TextDocumentIdentifier -> Position -> String -> Session ()
rename doc pos newName = do
- let params = RenameParams doc pos (T.pack newName)
+ let params = RenameParams doc pos (T.pack newName) Nothing
rsp <- request TextDocumentRename params :: Session RenameResponse
let wEdit = getResponseResult rsp
req = RequestMessage "" (IdInt 0) WorkspaceApplyEdit (ApplyWorkspaceEditParams wEdit)
-- | Returns the hover information at the specified position.
getHover :: TextDocumentIdentifier -> Position -> Session (Maybe Hover)
getHover doc pos =
- let params = TextDocumentPositionParams doc pos
+ let params = TextDocumentPositionParams doc pos Nothing
in getResponseResult <$> request TextDocumentHover params
-- | Returns the highlighted occurences of the term at the specified position
getHighlights :: TextDocumentIdentifier -> Position -> Session [DocumentHighlight]
getHighlights doc pos =
- let params = TextDocumentPositionParams doc pos
+ let params = TextDocumentPositionParams doc pos Nothing
in getResponseResult <$> request TextDocumentDocumentHighlight params
-- | Checks the response for errors and throws an exception if needed.
-- Returns the result if successful.
getResponseResult :: ResponseMessage a -> a
-getResponseResult rsp = fromMaybe exc (rsp ^. result)
- where exc = throw $ UnexpectedResponseError (rsp ^. LSP.id)
- (fromJust $ rsp ^. LSP.error)
+getResponseResult rsp =
+ case rsp ^. result of
+ Right x -> x
+ Left err -> throw $ UnexpectedResponseError (rsp ^. LSP.id) err
-- | Applies formatting to the specified document.
formatDoc :: TextDocumentIdentifier -> FormattingOptions -> Session ()
formatDoc doc opts = do
- let params = DocumentFormattingParams doc opts
+ let params = DocumentFormattingParams doc opts Nothing
edits <- getResponseResult <$> request TextDocumentFormatting params
applyTextEdits doc edits
-- | Applies formatting to the specified range in a document.
formatRange :: TextDocumentIdentifier -> FormattingOptions -> Range -> Session ()
formatRange doc opts range = do
- let params = DocumentRangeFormattingParams doc range opts
+ let params = DocumentRangeFormattingParams doc range opts Nothing
edits <- getResponseResult <$> request TextDocumentRangeFormatting params
applyTextEdits doc edits
-- | Returns the code lenses for the specified document.
getCodeLenses :: TextDocumentIdentifier -> Session [CodeLens]
getCodeLenses tId = do
- rsp <- request TextDocumentCodeLens (CodeLensParams tId) :: Session CodeLensResponse
+ rsp <- request TextDocumentCodeLens (CodeLensParams tId Nothing) :: Session CodeLensResponse
case getResponseResult rsp of
List res -> pure res
projects / lsp-test.git / blobdiff