{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE ExistentialQuantification #-}
--- |
--- Module : Language.Haskell.LSP.Test
--- Description : A functional testing framework for LSP servers.
--- Maintainer : luke_lau@icloud.com
--- Stability : experimental
---
--- A framework for testing
--- <https://github.com/Microsoft/language-server-protocol Language Server Protocol servers>
--- functionally.
-
+{-|
+Module : Language.Haskell.LSP.Test
+Description : A functional testing framework for LSP servers.
+Maintainer : luke_lau@icloud.com
+Stability : experimental
+Portability : POSIX
+
+Provides the framework to start functionally testing
+<https://github.com/Microsoft/language-server-protocol Language Server Protocol servers>.
+You should import "Language.Haskell.LSP.Types" alongside this.
+-}
module Language.Haskell.LSP.Test
(
-- * Sessions
- runSession
- , runSessionWithHandles
+ Session
+ , runSession
+ -- ** Config
, runSessionWithConfig
- , Session
, SessionConfig(..)
- , SessionException(..)
- , anySessionException
+ , defaultConfig
+ , module Language.Haskell.LSP.Types.Capabilities
+ -- ** Exceptions
+ , module Language.Haskell.LSP.Test.Exceptions
, withTimeout
- -- * Capabilities
- , fullCaps
-- * Sending
+ , request
+ , request_
, sendRequest
- , sendRequest_
- , sendRequest'
, sendNotification
- , sendRequestMessage
- , sendNotification'
, sendResponse
-- * Receving
- , message
- , anyRequest
- , anyResponse
- , anyNotification
- , anyMessage
- , loggingNotification
- , publishDiagnosticsNotification
- -- * Combinators
- , satisfy
+ , module Language.Haskell.LSP.Test.Parsing
-- * Utilities
+ -- | Quick helper functions for common tasks.
+ -- ** Initialization
, initializeResponse
-- ** Documents
, openDoc
import Data.Maybe
import Language.Haskell.LSP.Types hiding (id, capabilities, message)
import qualified Language.Haskell.LSP.Types as LSP
-import qualified Language.Haskell.LSP.Types.Capabilities as LSP
+import Language.Haskell.LSP.Types.Capabilities
import Language.Haskell.LSP.Messages
import Language.Haskell.LSP.VFS
-import Language.Haskell.LSP.Test.Capabilities
import Language.Haskell.LSP.Test.Compat
import Language.Haskell.LSP.Test.Decoding
import Language.Haskell.LSP.Test.Exceptions
import qualified Yi.Rope as Rope
-- | Starts a new session.
+--
+-- > runSession "hie" fullCaps "path/to/root/dir" $ do
+-- > doc <- openDoc "Desktop/simple.hs" "haskell"
+-- > diags <- waitForDiagnostics
+-- > let pos = Position 12 5
+-- > params = TextDocumentPositionParams doc
+-- > hover <- request TextDocumentHover params
runSession :: String -- ^ The command to run the server.
- -> LSP.ClientCapabilities -- ^ The capabilities that the client should declare.
+ -> ClientCapabilities -- ^ The capabilities that the client should declare.
-> FilePath -- ^ The filepath to the root directory for the session.
-> Session a -- ^ The session to run.
-> IO a
runSession = runSessionWithConfig def
--- | Starts a new sesion with a client with the specified capabilities.
+-- | Starts a new sesion with a custom configuration.
runSessionWithConfig :: SessionConfig -- ^ Configuration options for the session.
-> String -- ^ The command to run the server.
- -> LSP.ClientCapabilities -- ^ The capabilities that the client should declare.
+ -> ClientCapabilities -- ^ The capabilities that the client should declare.
-> FilePath -- ^ The filepath to the root directory for the session.
-> Session a -- ^ The session to run.
-> IO a
runSessionWithHandles serverIn serverOut listenServer config caps rootDir $ do
-- Wrap the session around initialize and shutdown calls
- initRspMsg <- sendRequest Initialize initializeParams :: Session InitializeResponse
+ initRspMsg <- request Initialize initializeParams :: Session InitializeResponse
liftIO $ maybe (return ()) (putStrLn . ("Error while initializing: " ++) . show ) (initRspMsg ^. LSP.error)
in maybe False (HashMap.member (doc ^. uri)) mMap
-- | Sends a request to the server and waits for its response.
+-- Will skip any messages in between the request and the response
-- @
--- rsp <- sendRequest TextDocumentDocumentSymbol params :: Session DocumentSymbolsResponse
+-- rsp <- request TextDocumentDocumentSymbol params :: Session DocumentSymbolsResponse
-- @
-- Note: will skip any messages in between the request and the response.
-sendRequest :: (ToJSON params, FromJSON a) => ClientMethod -> params -> Session (ResponseMessage a)
-sendRequest m = sendRequest' m >=> skipManyTill anyMessage . responseForId
+request :: (ToJSON params, FromJSON a) => ClientMethod -> params -> Session (ResponseMessage a)
+request m = sendRequest m >=> skipManyTill anyMessage . responseForId
--- | Send a request to the server and wait for its response,
--- but discard it.
-sendRequest_ :: ToJSON params => ClientMethod -> params -> Session ()
-sendRequest_ p = void . (sendRequest p :: ToJSON params => params -> Session (ResponseMessage Value))
+-- | The same as 'sendRequest', but discard the response.
+request_ :: ToJSON params => ClientMethod -> params -> Session ()
+request_ p = void . (request p :: ToJSON params => params -> Session (ResponseMessage Value))
--- | Sends a request to the server without waiting on the response.
-sendRequest'
+-- | Sends a request to the server. Unlike 'request', this doesn't wait for the response.
+sendRequest
:: ToJSON params
=> ClientMethod -- ^ The request method.
-> params -- ^ The request parameters.
-> Session LspId -- ^ The id of the request that was sent.
-sendRequest' method params = do
+sendRequest method params = do
id <- curReqId <$> get
modify $ \c -> c { curReqId = nextId id }
object ["jsonrpc" .= rpc, "id" .= id, "method" .= method, "params" .= params]
-sendRequestMessage :: (ToJSON a, ToJSON b) => RequestMessage ClientMethod a b -> Session ()
-sendRequestMessage req = do
- -- Update the request map
- reqMap <- requestMap <$> ask
- liftIO $ modifyMVar_ reqMap $
- \r -> return $ updateRequestMap r (req ^. LSP.id) (req ^. method)
-
- sendMessage req
-
-- | Sends a notification to the server.
sendNotification :: ToJSON a
=> ClientMethod -- ^ The notification method.
-> a -- ^ The notification parameters.
-> Session ()
--- | Open a virtual file if we send a did open text document notification
+-- Open a virtual file if we send a did open text document notification
sendNotification TextDocumentDidOpen params = do
let params' = fromJust $ decode $ encode params
n :: DidOpenTextDocumentNotification
oldVFS <- vfs <$> get
newVFS <- liftIO $ openVFS oldVFS n
modify (\s -> s { vfs = newVFS })
- sendNotification' n
+ sendMessage n
--- | Close a virtual file if we send a close text document notification
+-- Close a virtual file if we send a close text document notification
sendNotification TextDocumentDidClose params = do
let params' = fromJust $ decode $ encode params
n :: DidCloseTextDocumentNotification
oldVFS <- vfs <$> get
newVFS <- liftIO $ closeVFS oldVFS n
modify (\s -> s { vfs = newVFS })
- sendNotification' n
+ sendMessage n
-sendNotification method params = sendNotification' (NotificationMessage "2.0" method params)
-
-sendNotification' :: (ToJSON a, ToJSON b) => NotificationMessage a b -> Session ()
-sendNotification' = sendMessage
+sendNotification method params = sendMessage (NotificationMessage "2.0" method params)
+-- | Sends a response to the server.
sendResponse :: ToJSON a => ResponseMessage a -> Session ()
sendResponse = sendMessage
let (List diags) = diagsNot ^. params . LSP.diagnostics
return diags
+-- | The same as 'waitForDiagnostics', but will only match a specific
+-- 'Language.Haskell.LSP.Types._source'.
waitForDiagnosticsSource :: String -> Session [Diagnostic]
waitForDiagnosticsSource src = do
diags <- waitForDiagnostics
when (diagsNot ^. params . LSP.diagnostics /= List []) $ liftIO $ throw UnexpectedDiagnostics
-- | Returns the symbols in a document.
-getDocumentSymbols :: TextDocumentIdentifier -> Session [SymbolInformation]
+getDocumentSymbols :: TextDocumentIdentifier -> Session (Either [DocumentSymbol] [SymbolInformation])
getDocumentSymbols doc = do
- ResponseMessage _ rspLid mRes mErr <- sendRequest TextDocumentDocumentSymbol (DocumentSymbolParams doc)
+ ResponseMessage _ rspLid mRes mErr <- request TextDocumentDocumentSymbol (DocumentSymbolParams doc) :: Session DocumentSymbolsResponse
maybe (return ()) (throw . UnexpectedResponseError rspLid) mErr
- let (Just (List symbols)) = mRes
- return symbols
+ 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"
-- | Returns all the code actions in a document by
-- querying the code actions at each of the current
-- diagnostics' positions.
-getAllCodeActions :: TextDocumentIdentifier -> Session [CommandOrCodeAction]
+getAllCodeActions :: TextDocumentIdentifier -> Session [CAResult]
getAllCodeActions doc = do
curDiags <- fromMaybe [] . Map.lookup (doc ^. uri) . curDiagnostics <$> get
let ctx = CodeActionContext (List curDiags) Nothing
foldM (go ctx) [] curDiags
where
- go :: CodeActionContext -> [CommandOrCodeAction] -> Diagnostic -> Session [CommandOrCodeAction]
+ go :: CodeActionContext -> [CAResult] -> Diagnostic -> Session [CAResult]
go ctx acc diag = do
- ResponseMessage _ rspLid mRes mErr <- sendRequest TextDocumentCodeAction (CodeActionParams doc (diag ^. range) ctx)
+ ResponseMessage _ rspLid mRes mErr <- request TextDocumentCodeAction (CodeActionParams doc (diag ^. range) ctx)
case mErr of
Just e -> throw (UnexpectedResponseError rspLid e)
executeCommand cmd = do
let args = decode $ encode $ fromJust $ cmd ^. arguments
execParams = ExecuteCommandParams (cmd ^. command) args
- sendRequest_ WorkspaceExecuteCommand execParams
+ request_ WorkspaceExecuteCommand execParams
-- | Executes a code action.
-- Matching with the specification, if a code action
caps <- asks sessionCapabilities
let supportsDocChanges = fromMaybe False $ do
- let LSP.ClientCapabilities mWorkspace _ _ = caps
- LSP.WorkspaceClientCapabilities _ mEdit _ _ _ _ <- mWorkspace
- LSP.WorkspaceEditClientCapabilities mDocChanges <- mEdit
+ let ClientCapabilities mWorkspace _ _ = caps
+ WorkspaceClientCapabilities _ mEdit _ _ _ _ _ _ <- mWorkspace
+ WorkspaceEditClientCapabilities mDocChanges <- mEdit
mDocChanges
let wEdit = if supportsDocChanges
-- | Returns the completions for the position in the document.
getCompletions :: TextDocumentIdentifier -> Position -> Session [CompletionItem]
getCompletions doc pos = do
- rsp <- sendRequest TextDocumentCompletion (TextDocumentPositionParams doc pos)
+ rsp <- request TextDocumentCompletion (TextDocumentPositionParams doc pos)
case getResponseResult rsp of
Completions (List items) -> return items
getReferences doc pos inclDecl =
let ctx = ReferenceContext inclDecl
params = ReferenceParams doc pos ctx
- in getResponseResult <$> sendRequest TextDocumentReferences params
+ in getResponseResult <$> request TextDocumentReferences params
-- | Returns the definition(s) for the term at the specified position.
getDefinitions :: TextDocumentIdentifier -- ^ The document the term is in.
-> Session [Location] -- ^ The location(s) of the definitions
getDefinitions doc pos =
let params = TextDocumentPositionParams doc pos
- in getResponseResult <$> sendRequest TextDocumentDefinition params
+ in getResponseResult <$> request TextDocumentDefinition params
--- ^ Renames the term at the specified position.
+-- | 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)
- rsp <- sendRequest TextDocumentRename params :: Session RenameResponse
+ rsp <- request TextDocumentRename params :: Session RenameResponse
let wEdit = getResponseResult rsp
req = RequestMessage "" (IdInt 0) WorkspaceApplyEdit (ApplyWorkspaceEditParams wEdit)
updateState (ReqApplyWorkspaceEdit req)
getHover :: TextDocumentIdentifier -> Position -> Session (Maybe Hover)
getHover doc pos =
let params = TextDocumentPositionParams doc pos
- in getResponseResult <$> sendRequest TextDocumentHover params
+ in getResponseResult <$> 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
- in getResponseResult <$> sendRequest TextDocumentDocumentHighlight params
+ in getResponseResult <$> request TextDocumentDocumentHighlight params
-- | Checks the response for errors and throws an exception if needed.
-- Returns the result if successful.
formatDoc :: TextDocumentIdentifier -> FormattingOptions -> Session ()
formatDoc doc opts = do
let params = DocumentFormattingParams doc opts
- edits <- getResponseResult <$> sendRequest TextDocumentFormatting params
+ edits <- getResponseResult <$> 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
- edits <- getResponseResult <$> sendRequest TextDocumentRangeFormatting params
+ edits <- getResponseResult <$> request TextDocumentRangeFormatting params
applyTextEdits doc edits
applyTextEdits :: TextDocumentIdentifier -> List TextEdit -> Session ()
let wEdit = WorkspaceEdit (Just (HashMap.singleton (doc ^. uri) edits)) Nothing
req = RequestMessage "" (IdInt 0) WorkspaceApplyEdit (ApplyWorkspaceEditParams wEdit)
in updateState (ReqApplyWorkspaceEdit req)
-