gRPC-haskell/core/tests/LowLevelTests/Op.hs
2018-01-11 13:44:58 -05:00

80 lines
3 KiB
Haskell

{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
module LowLevelTests.Op where
import Data.ByteString (ByteString)
import Test.Tasty
import Test.Tasty.HUnit as HU (testCase, (@?=))
import Network.GRPC.LowLevel
import Network.GRPC.LowLevel.Call
import Network.GRPC.LowLevel.Client
import Network.GRPC.LowLevel.Server
import Network.GRPC.LowLevel.Op
lowLevelOpTests :: TestTree
lowLevelOpTests = testGroup "Synchronous unit tests of low-level Op interface"
[testCancelFromServer]
testCancelFromServer :: TestTree
testCancelFromServer =
testCase "Client/Server - client receives server cancellation" $
runSerialTest $ \grpc ->
withClientServerUnaryCall grpc $
\(Client{..}, Server{..}, ClientCall{..}, sc@ServerCall{..}) -> do
serverCallCancel sc StatusPermissionDenied "TestStatus"
clientRes <- runOps unsafeCC clientCQ clientRecvOps
case clientRes of
Left x -> error $ "Client recv error: " ++ show x
Right [_,_,OpRecvStatusOnClientResult _ code _details] -> do
code @?= StatusPermissionDenied
return $ Right ()
wrong -> error $ "Unexpected op results: " ++ show wrong
runSerialTest :: (GRPC -> IO (Either GRPCIOError ())) -> IO ()
runSerialTest f =
withGRPC f >>= \case Left x -> error $ show x
Right () -> return ()
withClientServerUnaryCall :: GRPC
-> ((Client, Server, ClientCall,
ServerCall ByteString)
-> IO (Either GRPCIOError a))
-> IO (Either GRPCIOError a)
withClientServerUnaryCall grpc f = do
withClient grpc clientConf $ \c -> do
crm <- clientRegisterMethodNormal c "/foo"
withServer grpc serverConf $ \s ->
withClientCall c crm 10 $ \cc -> do
let srm = head (normalMethods s)
-- NOTE: We need to send client ops here or else `withServerCall` hangs,
-- because registered methods try to do recv ops immediately when
-- created. If later we want to send payloads or metadata, we'll need
-- to tweak this.
_clientRes <- runOps (unsafeCC cc) (clientCQ c) clientEmptySendOps
withServerCall s srm $ \sc ->
f (c, s, cc, sc)
serverConf :: ServerConfig
serverConf = ServerConfig "localhost" 50051 [("/foo")] [] [] [] [] Nothing
clientConf :: ClientConfig
clientConf = ClientConfig "localhost" 50051 [] Nothing
clientEmptySendOps :: [Op]
clientEmptySendOps = [OpSendInitialMetadata mempty,
OpSendMessage "",
OpSendCloseFromClient]
clientRecvOps :: [Op]
clientRecvOps = [OpRecvInitialMetadata,
OpRecvMessage,
OpRecvStatusOnClient]
serverEmptyRecvOps :: [Op]
serverEmptyRecvOps = [OpSendInitialMetadata mempty,
OpRecvMessage,
OpRecvCloseOnServer]