159 lines
5.1 KiB
Haskell
159 lines
5.1 KiB
Haskell
{-# LANGUAGE DataKinds #-}
|
|
{-# LANGUAGE TypeOperators #-}
|
|
{-# LANGUAGE GADTs #-}
|
|
{-# LANGUAGE ViewPatterns #-}
|
|
|
|
module Servant.ClientSpec where
|
|
|
|
import Control.Concurrent
|
|
import Control.Exception
|
|
import Control.Monad.Trans.Either
|
|
import Data.Foldable
|
|
import Data.Proxy
|
|
import Data.Typeable
|
|
import Network.Socket
|
|
import Network.URI
|
|
import Network.Wai
|
|
import Network.Wai.Handler.Warp
|
|
import Prelude hiding (mapM_)
|
|
import Test.Hspec
|
|
|
|
import Servant.API
|
|
import Servant.Client
|
|
import Servant.Server
|
|
|
|
import Servant.ServerSpec
|
|
|
|
type Api =
|
|
"get" :> Get Person
|
|
:<|> "capture" :> Capture "name" String :> Get Person
|
|
:<|> "body" :> ReqBody Person :> Post Person
|
|
:<|> "param" :> QueryParam "name" String :> Get Person
|
|
:<|> "params" :> QueryParams "names" String :> Get [Person]
|
|
:<|> "flag" :> QueryFlag "flag" :> Get Bool
|
|
api :: Proxy Api
|
|
api = Proxy
|
|
|
|
server :: Application
|
|
server = serve api (
|
|
return alice
|
|
:<|> (\ name -> return $ Person name 0)
|
|
:<|> return
|
|
:<|> (\ name -> case name of
|
|
Just "alice" -> return alice
|
|
Just name -> left (400, name ++ " not found")
|
|
Nothing -> left (400, "missing parameter"))
|
|
:<|> (\ names -> return (zipWith Person names [0..]))
|
|
:<|> return
|
|
)
|
|
|
|
withServer :: (URIAuth -> IO a) -> IO a
|
|
withServer action = withWaiDaemon (return server) (action . mkHost "localhost")
|
|
|
|
getGet :: URIAuth -> EitherT String IO Person
|
|
getCapture :: String -> URIAuth -> EitherT String IO Person
|
|
getBody :: Person -> URIAuth -> EitherT String IO Person
|
|
getQueryParam :: Maybe String -> URIAuth -> EitherT String IO Person
|
|
getQueryParams :: [String] -> URIAuth -> EitherT String IO [Person]
|
|
getQueryFlag :: Bool -> URIAuth -> EitherT String IO Bool
|
|
( getGet
|
|
:<|> getCapture
|
|
:<|> getBody
|
|
:<|> getQueryParam
|
|
:<|> getQueryParams
|
|
:<|> getQueryFlag)
|
|
= client api
|
|
|
|
spec :: Spec
|
|
spec = do
|
|
it "Servant.API.Get" $ withServer $ \ host -> do
|
|
runEitherT (getGet host) `shouldReturn` Right alice
|
|
|
|
it "Servant.API.Capture" $ withServer $ \ host -> do
|
|
runEitherT (getCapture "Paula" host) `shouldReturn` Right (Person "Paula" 0)
|
|
|
|
it "Servant.API.ReqBody" $ withServer $ \ host -> do
|
|
let p = Person "Clara" 42
|
|
runEitherT (getBody p host) `shouldReturn` Right p
|
|
|
|
it "Servant.API.QueryParam" $ withServer $ \ host -> do
|
|
runEitherT (getQueryParam (Just "alice") host) `shouldReturn` Right alice
|
|
Left result <- runEitherT (getQueryParam (Just "bob") host)
|
|
result `shouldContain` "bob not found"
|
|
|
|
it "Servant.API.QueryParam.QueryParams" $ withServer $ \ host -> do
|
|
runEitherT (getQueryParams [] host) `shouldReturn` Right []
|
|
runEitherT (getQueryParams ["alice", "bob"] host)
|
|
`shouldReturn` Right [Person "alice" 0, Person "bob" 1]
|
|
|
|
context "Servant.API.QueryParam.QueryFlag" $
|
|
forM_ [False, True] $ \ flag ->
|
|
it (show flag) $ withServer $ \ host -> do
|
|
runEitherT (getQueryFlag flag host) `shouldReturn` Right flag
|
|
|
|
|
|
context "client correctly handles error status codes" $ do
|
|
let test :: WrappedApi -> Spec
|
|
test (WrappedApi api) =
|
|
it (show (typeOf api)) $
|
|
withWaiDaemon (return (serve api (left (500, "error message")))) $
|
|
\ (mkHost "localhost" -> host) -> do
|
|
let getResponse :: URIAuth -> EitherT String IO ()
|
|
getResponse = client api
|
|
Left result <- runEitherT (getResponse host)
|
|
result `shouldContain` "error message"
|
|
mapM_ test $
|
|
(WrappedApi (Proxy :: Proxy Delete)) :
|
|
(WrappedApi (Proxy :: Proxy (Get ()))) :
|
|
(WrappedApi (Proxy :: Proxy (Post ()))) :
|
|
(WrappedApi (Proxy :: Proxy (Put ()))) :
|
|
[]
|
|
|
|
data WrappedApi where
|
|
WrappedApi :: (HasServer api, Server api ~ EitherT (Int, String) IO a,
|
|
HasClient api, Client api ~ (URIAuth -> EitherT String IO ()),
|
|
Typeable api) =>
|
|
Proxy api -> WrappedApi
|
|
|
|
|
|
-- * utils
|
|
|
|
withWaiDaemon :: IO Application -> (Port -> IO a) -> IO a
|
|
withWaiDaemon mkApplication action = do
|
|
application <- mkApplication
|
|
bracket (acquire application) free (\ (_, _, port) -> action port)
|
|
where
|
|
acquire application = do
|
|
(notifyStart, waitForStart) <- lvar
|
|
(notifyKilled, waitForKilled) <- lvar
|
|
thread <- forkIO $ (do
|
|
(krakenPort, socket) <- openTestSocket
|
|
let settings =
|
|
setPort krakenPort $ -- set here just for consistency, shouldn't be
|
|
-- used (it's set in the socket)
|
|
setBeforeMainLoop (notifyStart krakenPort)
|
|
defaultSettings
|
|
runSettingsSocket settings socket application)
|
|
`finally` notifyKilled ()
|
|
krakenPort <- waitForStart
|
|
return (thread, waitForKilled, krakenPort)
|
|
free (thread, waitForKilled, _) = do
|
|
killThread thread
|
|
waitForKilled
|
|
|
|
lvar :: IO (a -> IO (), IO a)
|
|
lvar = do
|
|
mvar <- newEmptyMVar
|
|
let put = putMVar mvar
|
|
wait = readMVar mvar
|
|
return (put, wait)
|
|
|
|
openTestSocket :: IO (Port, Socket)
|
|
openTestSocket = do
|
|
s <- socket AF_INET Stream defaultProtocol
|
|
localhost <- inet_addr "127.0.0.1"
|
|
bind s (SockAddrInet aNY_PORT localhost)
|
|
listen s 1
|
|
port <- socketPort s
|
|
return (fromIntegral port, s)
|