504 lines
20 KiB
Haskell
504 lines
20 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-# LANGUAGE ConstraintKinds #-}
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{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE DeriveGeneric #-}
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE FunctionalDependencies #-}
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{-# LANGUAGE GADTs #-}
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{-# LANGUAGE MultiParamTypeClasses #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE PolyKinds #-}
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{-# LANGUAGE RecordWildCards #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE StandaloneDeriving #-}
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{-# LANGUAGE TypeApplications #-}
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{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE TypeOperators #-}
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{-# LANGUAGE UndecidableInstances #-}
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{-# OPTIONS_GHC -freduction-depth=100 #-}
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{-# OPTIONS_GHC -fno-warn-orphans #-}
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{-# OPTIONS_GHC -fno-warn-name-shadowing #-}
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module Servant.ClientSpec (spec, Person(..), startWaiApp, endWaiApp) where
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import Prelude ()
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import Prelude.Compat
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import Control.Arrow
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(left)
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import Control.Concurrent
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(ThreadId, forkIO, killThread)
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import Control.DeepSeq
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(NFData (..))
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import Control.Exception
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(bracket, fromException, IOException)
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import Control.Monad.Error.Class
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(throwError)
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import Data.Aeson
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import Data.Char
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(chr, isPrint)
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import Data.Foldable
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(forM_, toList)
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import Data.Maybe
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(isJust)
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import Data.Monoid ()
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import Data.Proxy
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import GHC.Generics
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(Generic)
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import qualified Network.HTTP.Types as HTTP
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import Network.Socket
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import qualified Network.Wai as Wai
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import Network.Wai.Handler.Warp
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import Test.Hspec
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import Test.Hspec.QuickCheck
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import Test.HUnit
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import Test.QuickCheck
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import Web.FormUrlEncoded
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(FromForm, ToForm)
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import Servant.API
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((:<|>) ((:<|>)), (:>), AuthProtect, BasicAuth,
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BasicAuthData (..), Capture, CaptureAll, Delete,
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DeleteNoContent, EmptyAPI, FormUrlEncoded, Get, Header,
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Headers, JSON, NoContent (NoContent), Post, Put, QueryFlag,
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QueryParam, QueryParams, Raw, ReqBody, addHeader, getHeaders)
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import qualified Servant.Client.Core.Auth as Auth
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import qualified Servant.Client.Core.Request as Req
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import Servant.HttpStreams
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import Servant.Server
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import Servant.Server.Experimental.Auth
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import Servant.Test.ComprehensiveAPI
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-- This declaration simply checks that all instances are in place.
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_ = client comprehensiveAPIWithoutStreaming
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spec :: Spec
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spec = describe "Servant.HttpStreams" $ do
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successSpec
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failSpec
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wrappedApiSpec
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basicAuthSpec
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genAuthSpec
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hoistClientSpec
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connectionErrorSpec
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-- * test data types
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data Person = Person
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{ _name :: String
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, _age :: Integer
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} deriving (Eq, Show, Generic)
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instance NFData Person where
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rnf (Person n a) = rnf n `seq` rnf a
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instance ToJSON Person
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instance FromJSON Person
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instance ToForm Person
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instance FromForm Person
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instance Arbitrary Person where
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arbitrary = Person <$> arbitrary <*> arbitrary
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alice :: Person
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alice = Person "Alice" 42
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carol :: Person
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carol = Person "Carol" 17
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type TestHeaders = '[Header "X-Example1" Int, Header "X-Example2" String]
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type Api =
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Get '[JSON] Person
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:<|> "get" :> Get '[JSON] Person
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:<|> "deleteEmpty" :> DeleteNoContent
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:<|> "capture" :> Capture "name" String :> Get '[JSON,FormUrlEncoded] Person
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:<|> "captureAll" :> CaptureAll "names" String :> Get '[JSON] [Person]
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:<|> "body" :> ReqBody '[FormUrlEncoded,JSON] Person :> Post '[JSON] Person
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:<|> "param" :> QueryParam "name" String :> Get '[FormUrlEncoded,JSON] Person
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:<|> "params" :> QueryParams "names" String :> Get '[JSON] [Person]
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:<|> "flag" :> QueryFlag "flag" :> Get '[JSON] Bool
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:<|> "rawSuccess" :> Raw
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:<|> "rawFailure" :> Raw
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:<|> "multiple" :>
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Capture "first" String :>
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QueryParam "second" Int :>
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QueryFlag "third" :>
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ReqBody '[JSON] [(String, [Rational])] :>
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Get '[JSON] (String, Maybe Int, Bool, [(String, [Rational])])
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:<|> "headers" :> Get '[JSON] (Headers TestHeaders Bool)
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:<|> "deleteContentType" :> DeleteNoContent
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:<|> "redirectWithCookie" :> Raw
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:<|> "empty" :> EmptyAPI
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api :: Proxy Api
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api = Proxy
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getRoot :: ClientM Person
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getGet :: ClientM Person
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getDeleteEmpty :: ClientM NoContent
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getCapture :: String -> ClientM Person
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getCaptureAll :: [String] -> ClientM [Person]
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getBody :: Person -> ClientM Person
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getQueryParam :: Maybe String -> ClientM Person
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getQueryParams :: [String] -> ClientM [Person]
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getQueryFlag :: Bool -> ClientM Bool
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getRawSuccess :: HTTP.Method -> ClientM Response
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getRawFailure :: HTTP.Method -> ClientM Response
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getMultiple :: String -> Maybe Int -> Bool -> [(String, [Rational])]
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-> ClientM (String, Maybe Int, Bool, [(String, [Rational])])
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getRespHeaders :: ClientM (Headers TestHeaders Bool)
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getDeleteContentType :: ClientM NoContent
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_getRedirectWithCookie :: HTTP.Method -> ClientM Response
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getRoot
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:<|> getGet
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:<|> getDeleteEmpty
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:<|> getCapture
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:<|> getCaptureAll
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:<|> getBody
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:<|> getQueryParam
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:<|> getQueryParams
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:<|> getQueryFlag
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:<|> getRawSuccess
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:<|> getRawFailure
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:<|> getMultiple
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:<|> getRespHeaders
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:<|> getDeleteContentType
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:<|> _getRedirectWithCookie
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:<|> EmptyClient = client api
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server :: Application
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server = serve api (
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return carol
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:<|> return alice
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:<|> return NoContent
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:<|> (\ name -> return $ Person name 0)
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:<|> (\ names -> return (zipWith Person names [0..]))
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:<|> return
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:<|> (\ name -> case name of
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Just "alice" -> return alice
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Just n -> throwError $ ServerError 400 (n ++ " not found") "" []
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Nothing -> throwError $ ServerError 400 "missing parameter" "" [])
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:<|> (\ names -> return (zipWith Person names [0..]))
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:<|> return
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:<|> (Tagged $ \ _request respond -> respond $ Wai.responseLBS HTTP.ok200 [] "rawSuccess")
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:<|> (Tagged $ \ _request respond -> respond $ Wai.responseLBS HTTP.badRequest400 [] "rawFailure")
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:<|> (\ a b c d -> return (a, b, c, d))
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:<|> (return $ addHeader 1729 $ addHeader "eg2" True)
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:<|> return NoContent
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:<|> (Tagged $ \ _request respond -> respond $ Wai.responseLBS HTTP.found302 [("Location", "testlocation"), ("Set-Cookie", "testcookie=test")] "")
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:<|> emptyServer)
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type FailApi =
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"get" :> Raw
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:<|> "capture" :> Capture "name" String :> Raw
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:<|> "body" :> Raw
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failApi :: Proxy FailApi
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failApi = Proxy
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failServer :: Application
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failServer = serve failApi (
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(Tagged $ \ _request respond -> respond $ Wai.responseLBS HTTP.ok200 [] "")
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:<|> (\ _capture -> Tagged $ \_request respond -> respond $ Wai.responseLBS HTTP.ok200 [("content-type", "application/json")] "")
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:<|> (Tagged $ \_request respond -> respond $ Wai.responseLBS HTTP.ok200 [("content-type", "fooooo")] "")
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)
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-- * basic auth stuff
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type BasicAuthAPI =
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BasicAuth "foo-realm" () :> "private" :> "basic" :> Get '[JSON] Person
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basicAuthAPI :: Proxy BasicAuthAPI
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basicAuthAPI = Proxy
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basicAuthHandler :: BasicAuthCheck ()
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basicAuthHandler =
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let check (BasicAuthData username password) =
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if username == "servant" && password == "server"
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then return (Authorized ())
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else return Unauthorized
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in BasicAuthCheck check
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basicServerContext :: Context '[ BasicAuthCheck () ]
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basicServerContext = basicAuthHandler :. EmptyContext
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basicAuthServer :: Application
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basicAuthServer = serveWithContext basicAuthAPI basicServerContext (const (return alice))
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-- * general auth stuff
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type GenAuthAPI =
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AuthProtect "auth-tag" :> "private" :> "auth" :> Get '[JSON] Person
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genAuthAPI :: Proxy GenAuthAPI
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genAuthAPI = Proxy
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type instance AuthServerData (AuthProtect "auth-tag") = ()
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type instance Auth.AuthClientData (AuthProtect "auth-tag") = ()
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genAuthHandler :: AuthHandler Wai.Request ()
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genAuthHandler =
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let handler req = case lookup "AuthHeader" (Wai.requestHeaders req) of
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Nothing -> throwError (err401 { errBody = "Missing auth header" })
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Just _ -> return ()
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in mkAuthHandler handler
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genAuthServerContext :: Context '[ AuthHandler Wai.Request () ]
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genAuthServerContext = genAuthHandler :. EmptyContext
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genAuthServer :: Application
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genAuthServer = serveWithContext genAuthAPI genAuthServerContext (const (return alice))
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runClient :: NFData a => ClientM a -> BaseUrl -> IO (Either ClientError a)
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runClient x burl = withClientEnvIO burl (runClientM x)
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runClientUnsafe :: ClientM a -> BaseUrl -> IO (Either ClientError a)
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runClientUnsafe x burl = withClientEnvIO burl (runClientMUnsafe x)
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where
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runClientMUnsafe x env = withClientM x env return
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successSpec :: Spec
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successSpec = beforeAll (startWaiApp server) $ afterAll endWaiApp $ do
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it "Servant.API.Get root" $ \(_, baseUrl) -> do
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left show <$> runClient getRoot baseUrl `shouldReturn` Right carol
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it "Servant.API.Get" $ \(_, baseUrl) -> do
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left show <$> runClient getGet baseUrl `shouldReturn` Right alice
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describe "Servant.API.Delete" $ do
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it "allows empty content type" $ \(_, baseUrl) -> do
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left show <$> runClient getDeleteEmpty baseUrl `shouldReturn` Right NoContent
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it "allows content type" $ \(_, baseUrl) -> do
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left show <$> runClient getDeleteContentType baseUrl `shouldReturn` Right NoContent
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it "Servant.API.Capture" $ \(_, baseUrl) -> do
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left show <$> runClient (getCapture "Paula") baseUrl `shouldReturn` Right (Person "Paula" 0)
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it "Servant.API.CaptureAll" $ \(_, baseUrl) -> do
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let expected = [(Person "Paula" 0), (Person "Peta" 1)]
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left show <$> runClient (getCaptureAll ["Paula", "Peta"]) baseUrl `shouldReturn` Right expected
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it "Servant.API.ReqBody" $ \(_, baseUrl) -> do
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let p = Person "Clara" 42
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left show <$> runClient (getBody p) baseUrl `shouldReturn` Right p
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it "Servant.API FailureResponse" $ \(_, baseUrl) -> do
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left show <$> runClient (getQueryParam (Just "alice")) baseUrl `shouldReturn` Right alice
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Left (FailureResponse req _) <- runClient (getQueryParam (Just "bob")) baseUrl
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Req.requestPath req `shouldBe` (baseUrl, "/param")
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toList (Req.requestQueryString req) `shouldBe` [("name", Just "bob")]
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Req.requestMethod req `shouldBe` HTTP.methodGet
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it "Servant.API.QueryParam" $ \(_, baseUrl) -> do
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left show <$> runClient (getQueryParam (Just "alice")) baseUrl `shouldReturn` Right alice
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Left (FailureResponse _ r) <- runClient (getQueryParam (Just "bob")) baseUrl
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responseStatusCode r `shouldBe` HTTP.Status 400 "bob not found"
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it "Servant.API.QueryParam.QueryParams" $ \(_, baseUrl) -> do
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left show <$> runClient (getQueryParams []) baseUrl `shouldReturn` Right []
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left show <$> runClient (getQueryParams ["alice", "bob"]) baseUrl
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`shouldReturn` Right [Person "alice" 0, Person "bob" 1]
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context "Servant.API.QueryParam.QueryFlag" $
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forM_ [False, True] $ \ flag -> it (show flag) $ \(_, baseUrl) -> do
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left show <$> runClient (getQueryFlag flag) baseUrl `shouldReturn` Right flag
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it "Servant.API.Raw on success" $ \(_, baseUrl) -> do
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res <- runClient (getRawSuccess HTTP.methodGet) baseUrl
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case res of
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Left e -> assertFailure $ show e
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Right r -> do
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responseStatusCode r `shouldBe` HTTP.status200
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responseBody r `shouldBe` "rawSuccess"
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it "Servant.API.Raw should return a Left in case of failure" $ \(_, baseUrl) -> do
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res <- runClient (getRawFailure HTTP.methodGet) baseUrl
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case res of
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Right _ -> assertFailure "expected Left, but got Right"
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Left (FailureResponse _ r) -> do
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responseStatusCode r `shouldBe` HTTP.status400
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responseBody r `shouldBe` "rawFailure"
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Left e -> assertFailure $ "expected FailureResponse, but got " ++ show e
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it "Returns headers appropriately" $ \(_, baseUrl) -> do
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res <- runClient getRespHeaders baseUrl
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case res of
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Left e -> assertFailure $ show e
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Right val -> getHeaders val `shouldBe` [("X-Example1", "1729"), ("X-Example2", "eg2")]
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modifyMaxSuccess (const 20) $ do
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it "works for a combination of Capture, QueryParam, QueryFlag and ReqBody" $ \(_, baseUrl) ->
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property $ forAllShrink pathGen shrink $ \(NonEmpty cap) num flag body ->
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ioProperty $ do
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result <- left show <$> runClient (getMultiple cap num flag body) baseUrl
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return $
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result === Right (cap, num, flag, body)
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wrappedApiSpec :: Spec
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wrappedApiSpec = describe "error status codes" $ do
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let serveW api = serve api $ throwError $ ServerError 500 "error message" "" []
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context "are correctly handled by the client" $
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let test :: (WrappedApi, String) -> Spec
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test (WrappedApi api, desc) =
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it desc $ bracket (startWaiApp $ serveW api) endWaiApp $ \(_, baseUrl) -> do
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let getResponse :: ClientM ()
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getResponse = client api
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Left (FailureResponse _ r) <- runClient getResponse baseUrl
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responseStatusCode r `shouldBe` (HTTP.Status 500 "error message")
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in mapM_ test $
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(WrappedApi (Proxy :: Proxy (Delete '[JSON] ())), "Delete") :
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(WrappedApi (Proxy :: Proxy (Get '[JSON] ())), "Get") :
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(WrappedApi (Proxy :: Proxy (Post '[JSON] ())), "Post") :
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(WrappedApi (Proxy :: Proxy (Put '[JSON] ())), "Put") :
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[]
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failSpec :: Spec
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failSpec = beforeAll (startWaiApp failServer) $ afterAll endWaiApp $ do
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context "client returns errors appropriately" $ do
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it "reports FailureResponse" $ \(_, baseUrl) -> do
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let (_ :<|> _ :<|> getDeleteEmpty :<|> _) = client api
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Left res <- runClient getDeleteEmpty baseUrl
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case res of
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FailureResponse _ r | responseStatusCode r == HTTP.status404 -> return ()
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_ -> fail $ "expected 404 response, but got " <> show res
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it "reports DecodeFailure" $ \(_, baseUrl) -> do
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let (_ :<|> _ :<|> _ :<|> getCapture :<|> _) = client api
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Left res <- runClient (getCapture "foo") baseUrl
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case res of
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DecodeFailure _ _ -> return ()
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_ -> fail $ "expected DecodeFailure, but got " <> show res
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-- we don't catch IOException's
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xit "reports ConnectionError" $ \_ -> do
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let (getGetWrongHost :<|> _) = client api
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Left res <- runClient getGetWrongHost (BaseUrl Http "127.0.0.1" 19872 "")
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case res of
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ConnectionError _ -> return ()
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_ -> fail $ "expected ConnectionError, but got " <> show res
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it "reports UnsupportedContentType" $ \(_, baseUrl) -> do
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let (_ :<|> getGet :<|> _ ) = client api
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Left res <- runClient getGet baseUrl
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case res of
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UnsupportedContentType ("application/octet-stream") _ -> return ()
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_ -> fail $ "expected UnsupportedContentType, but got " <> show res
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it "reports InvalidContentTypeHeader" $ \(_, baseUrl) -> do
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let (_ :<|> _ :<|> _ :<|> _ :<|> _ :<|> getBody :<|> _) = client api
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Left res <- runClient (getBody alice) baseUrl
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case res of
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InvalidContentTypeHeader _ -> return ()
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_ -> fail $ "expected InvalidContentTypeHeader, but got " <> show res
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data WrappedApi where
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WrappedApi :: (HasServer (api :: *) '[], Server api ~ Handler a,
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HasClient ClientM api, Client ClientM api ~ ClientM ()) =>
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Proxy api -> WrappedApi
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basicAuthSpec :: Spec
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basicAuthSpec = beforeAll (startWaiApp basicAuthServer) $ afterAll endWaiApp $ do
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context "Authentication works when requests are properly authenticated" $ do
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it "Authenticates a BasicAuth protected server appropriately" $ \(_,baseUrl) -> do
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let getBasic = client basicAuthAPI
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let basicAuthData = BasicAuthData "servant" "server"
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left show <$> runClient (getBasic basicAuthData) baseUrl `shouldReturn` Right alice
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context "Authentication is rejected when requests are not authenticated properly" $ do
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it "Authenticates a BasicAuth protected server appropriately" $ \(_,baseUrl) -> do
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let getBasic = client basicAuthAPI
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let basicAuthData = BasicAuthData "not" "password"
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Left (FailureResponse _ r) <- runClient (getBasic basicAuthData) baseUrl
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responseStatusCode r `shouldBe` HTTP.Status 403 "Forbidden"
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genAuthSpec :: Spec
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genAuthSpec = beforeAll (startWaiApp genAuthServer) $ afterAll endWaiApp $ do
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context "Authentication works when requests are properly authenticated" $ do
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it "Authenticates a AuthProtect protected server appropriately" $ \(_, baseUrl) -> do
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let getProtected = client genAuthAPI
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let authRequest = Auth.mkAuthenticatedRequest () (\_ req -> Req.addHeader "AuthHeader" ("cool" :: String) req)
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left show <$> runClient (getProtected authRequest) baseUrl `shouldReturn` Right alice
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context "Authentication is rejected when requests are not authenticated properly" $ do
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it "Authenticates a AuthProtect protected server appropriately" $ \(_, baseUrl) -> do
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let getProtected = client genAuthAPI
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let authRequest = Auth.mkAuthenticatedRequest () (\_ req -> Req.addHeader "Wrong" ("header" :: String) req)
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Left (FailureResponse _ r) <- runClient (getProtected authRequest) baseUrl
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responseStatusCode r `shouldBe` (HTTP.Status 401 "Unauthorized")
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-- * hoistClient
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type HoistClientAPI = Get '[JSON] Int :<|> Capture "n" Int :> Post '[JSON] Int
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hoistClientAPI :: Proxy HoistClientAPI
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hoistClientAPI = Proxy
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hoistClientServer :: Application -- implements HoistClientAPI
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hoistClientServer = serve hoistClientAPI $ return 5 :<|> (\n -> return n)
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hoistClientSpec :: Spec
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hoistClientSpec = beforeAll (startWaiApp hoistClientServer) $ afterAll endWaiApp $ do
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describe "Servant.Client.hoistClient" $ do
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it "allows us to GET/POST/... requests in IO instead of ClientM" $ \(_, baseUrl) -> do
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let (getInt :<|> postInt)
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= hoistClient hoistClientAPI
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(fmap (either (error . show) id) . flip runClientUnsafe baseUrl)
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(client hoistClientAPI)
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|
|
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getInt `shouldReturn` 5
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postInt 5 `shouldReturn` 5
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|
|
|
-- * ConnectionError
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|
type ConnectionErrorAPI = Get '[JSON] Int
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|
|
|
connectionErrorAPI :: Proxy ConnectionErrorAPI
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|
connectionErrorAPI = Proxy
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|
|
|
connectionErrorSpec :: Spec
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|
connectionErrorSpec = describe "Servant.Client.ClientError" $
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|
xit "correctly catches ConnectionErrors when the HTTP request can't go through" $ do
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|
let getInt = client connectionErrorAPI
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|
let baseUrl' = BaseUrl Http "example.invalid" 80 ""
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|
let isHttpError (Left (ConnectionError e)) = isJust $ fromException @IOException e
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|
isHttpError _ = False
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|
(isHttpError <$> runClient getInt baseUrl') `shouldReturn` True
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|
|
|
-- * utils
|
|
|
|
startWaiApp :: Application -> IO (ThreadId, BaseUrl)
|
|
startWaiApp app = do
|
|
(port, socket) <- openTestSocket
|
|
let settings = setPort port $ defaultSettings
|
|
thread <- forkIO $ runSettingsSocket settings socket app
|
|
return (thread, BaseUrl Http "127.0.0.1" port "")
|
|
|
|
|
|
endWaiApp :: (ThreadId, BaseUrl) -> IO ()
|
|
endWaiApp (thread, _) = killThread thread
|
|
|
|
openTestSocket :: IO (Port, Socket)
|
|
openTestSocket = do
|
|
s <- socket AF_INET Stream defaultProtocol
|
|
let localhost = tupleToHostAddress (127, 0, 0, 1)
|
|
bind s (SockAddrInet defaultPort localhost)
|
|
listen s 1
|
|
port <- socketPort s
|
|
return (fromIntegral port, s)
|
|
|
|
pathGen :: Gen (NonEmptyList Char)
|
|
pathGen = fmap NonEmpty path
|
|
where
|
|
path = listOf1 $ elements $
|
|
filter (not . (`elem` ("?%[]/#;" :: String))) $
|
|
filter isPrint $
|
|
map chr [0..127]
|