5e2c48b08f
* defined a typeclass abstracting the execution of a query * provide ClientM-based instances for this typeclass * changed signature of client and clientWithRoute to add proxy for context * updated tests
495 lines
20 KiB
Haskell
495 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 TypeFamilies #-}
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{-# LANGUAGE TypeOperators #-}
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{-# LANGUAGE UndecidableInstances #-}
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#if __GLASGOW_HASKELL__ >= 800
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{-# OPTIONS_GHC -freduction-depth=100 #-}
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#else
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{-# OPTIONS_GHC -fcontext-stack=100 #-}
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#endif
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{-# OPTIONS_GHC -fno-warn-orphans #-}
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{-# OPTIONS_GHC -fno-warn-name-shadowing #-}
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#include "overlapping-compat.h"
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module Servant.ClientSpec where
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import Control.Arrow (left)
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import Control.Concurrent (forkIO, killThread, ThreadId)
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import Control.Exception (bracket)
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import Control.Monad.Error.Class (throwError )
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import Data.Aeson
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import qualified Data.ByteString.Lazy as BS
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import Data.Char (chr, isPrint)
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import Data.Foldable (forM_)
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import Data.Monoid hiding (getLast)
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import Data.Proxy
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import qualified Generics.SOP as SOP
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import GHC.Generics (Generic)
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import qualified Network.HTTP.Client as C
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import Network.HTTP.Media
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import qualified Network.HTTP.Types as HTTP
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import Network.Socket
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import Network.Wai (Request, requestHeaders, responseLBS)
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import Network.Wai.Handler.Warp
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import Prelude ()
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import Prelude.Compat
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import System.IO.Unsafe (unsafePerformIO)
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import Test.HUnit
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import Test.Hspec
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import Test.Hspec.QuickCheck
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import Test.QuickCheck
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import Web.FormUrlEncoded (FromForm, ToForm)
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import Servant.API
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import Servant.API.Internal.Test.ComprehensiveAPI
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import Servant.Client
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import Servant.Client.Generic
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import qualified Servant.Common.Req as SCR
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import qualified Servant.Client.HttpClient as SCR
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import Servant.Server
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import Servant.Server.Experimental.Auth
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-- This declaration simply checks that all instances are in place.
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_ = client (Proxy :: Proxy ClientM) comprehensiveAPI
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spec :: Spec
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spec = describe "Servant.Client" $ do
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sucessSpec
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failSpec
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wrappedApiSpec
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basicAuthSpec
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genAuthSpec
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genericClientSpec
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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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}
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deriving (Eq, Show, Generic)
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instance ToJSON Person
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instance FromJSON Person
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instance ToForm Person where
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instance FromForm Person where
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alice :: Person
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alice = Person "Alice" 42
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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" :> Get '[JSON] Person
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:<|> "deleteEmpty" :> DeleteNoContent '[JSON] NoContent
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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 '[JSON] NoContent
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:<|> "empty" :> EmptyAPI
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api :: Proxy Api
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api = Proxy
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getGet :: SCR.ClientM Person
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getDeleteEmpty :: SCR.ClientM NoContent
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getCapture :: String -> SCR.ClientM Person
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getCaptureAll :: [String] -> SCR.ClientM [Person]
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getBody :: Person -> SCR.ClientM Person
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getQueryParam :: Maybe String -> SCR.ClientM Person
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getQueryParams :: [String] -> SCR.ClientM [Person]
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getQueryFlag :: Bool -> SCR.ClientM Bool
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getRawSuccess :: HTTP.Method
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-> SCR.ClientM (Int, BS.ByteString, MediaType, [HTTP.Header], C.Response BS.ByteString)
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getRawFailure :: HTTP.Method
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-> SCR.ClientM (Int, BS.ByteString, MediaType, [HTTP.Header], C.Response BS.ByteString)
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getMultiple :: String -> Maybe Int -> Bool -> [(String, [Rational])]
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-> SCR.ClientM (String, Maybe Int, Bool, [(String, [Rational])])
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getRespHeaders :: SCR.ClientM (Headers TestHeaders Bool)
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getDeleteContentType :: SCR.ClientM NoContent
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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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:<|> EmptyClient = client (Proxy :: Proxy ClientM) api
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server :: Application
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server = serve api (
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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 $ ServantErr 400 (n ++ " not found") "" []
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Nothing -> throwError $ ServantErr 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 $ responseLBS HTTP.ok200 [] "rawSuccess")
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:<|> (Tagged $ \ _request respond -> respond $ 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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:<|> 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 $ responseLBS HTTP.ok200 [] "")
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:<|> (\ _capture -> Tagged $ \_request respond -> respond $ responseLBS HTTP.ok200 [("content-type", "application/json")] "")
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:<|> (Tagged $ \_request respond -> respond $ 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 AuthClientData (AuthProtect "auth-tag") = ()
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genAuthHandler :: AuthHandler Request ()
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genAuthHandler =
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let handler req = case lookup "AuthHeader" (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 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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-- * generic client stuff
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type GenericClientAPI
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= QueryParam "sqr" Int :> Get '[JSON] Int
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:<|> Capture "foo" String :> NestedAPI1
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data GenericClient = GenericClient
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{ getSqr :: Maybe Int -> SCR.ClientM Int
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, mkNestedClient1 :: String -> NestedClient1
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} deriving Generic
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instance SOP.Generic GenericClient
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instance (Client ClientM GenericClientAPI ~ client) => ClientLike client GenericClient
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type NestedAPI1
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= QueryParam "int" Int :> NestedAPI2
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:<|> QueryParam "id" Char :> Get '[JSON] Char
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data NestedClient1 = NestedClient1
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{ mkNestedClient2 :: Maybe Int -> NestedClient2
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, idChar :: Maybe Char -> SCR.ClientM Char
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} deriving Generic
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instance SOP.Generic NestedClient1
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instance (Client ClientM NestedAPI1 ~ client) => ClientLike client NestedClient1
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type NestedAPI2
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= "sum" :> Capture "first" Int :> Capture "second" Int :> Get '[JSON] Int
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:<|> "void" :> Post '[JSON] ()
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data NestedClient2 = NestedClient2
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{ getSum :: Int -> Int -> SCR.ClientM Int
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, doNothing :: SCR.ClientM ()
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} deriving Generic
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instance SOP.Generic NestedClient2
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instance (Client ClientM NestedAPI2 ~ client) => ClientLike client NestedClient2
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genericClientServer :: Application
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genericClientServer = serve (Proxy :: Proxy GenericClientAPI) (
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(\ mx -> case mx of
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Just x -> return (x*x)
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Nothing -> throwError $ ServantErr 400 "missing parameter" "" []
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)
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:<|> nestedServer1
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)
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where
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nestedServer1 _str = nestedServer2 :<|> (maybe (throwError $ ServantErr 400 "missing parameter" "" []) return)
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nestedServer2 _int = (\ x y -> return (x + y)) :<|> return ()
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{-# NOINLINE manager #-}
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manager :: C.Manager
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manager = unsafePerformIO $ C.newManager C.defaultManagerSettings
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sucessSpec :: Spec
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sucessSpec = beforeAll (startWaiApp server) $ afterAll endWaiApp $ do
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it "Servant.API.Get" $ \(_, baseUrl) -> do
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(left show <$> (runClientM getGet (ClientEnv manager 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 <$> (runClientM getDeleteEmpty (ClientEnv manager baseUrl))) `shouldReturn` Right NoContent
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it "allows content type" $ \(_, baseUrl) -> do
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(left show <$> (runClientM getDeleteContentType (ClientEnv manager baseUrl))) `shouldReturn` Right NoContent
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it "Servant.API.Capture" $ \(_, baseUrl) -> do
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(left show <$> (runClientM (getCapture "Paula") (ClientEnv manager 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 <$> (runClientM (getCaptureAll ["Paula", "Peta"]) (ClientEnv manager 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 <$> runClientM (getBody p) (ClientEnv manager baseUrl)) `shouldReturn` Right p
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it "Servant.API.QueryParam" $ \(_, baseUrl) -> do
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left show <$> runClientM (getQueryParam (Just "alice")) (ClientEnv manager baseUrl) `shouldReturn` Right alice
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Left FailureResponse{..} <- runClientM (getQueryParam (Just "bob")) (ClientEnv manager baseUrl)
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responseStatus `shouldBe` HTTP.Status 400 "bob not found"
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it "Servant.API.QueryParam.QueryParams" $ \(_, baseUrl) -> do
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(left show <$> runClientM (getQueryParams []) (ClientEnv manager baseUrl)) `shouldReturn` Right []
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(left show <$> runClientM (getQueryParams ["alice", "bob"]) (ClientEnv manager 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 <$> runClientM (getQueryFlag flag) (ClientEnv manager baseUrl)) `shouldReturn` Right flag
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it "Servant.API.Raw on success" $ \(_, baseUrl) -> do
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res <- runClientM (getRawSuccess HTTP.methodGet) (ClientEnv manager baseUrl)
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case res of
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Left e -> assertFailure $ show e
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Right (code, body, ct, _, response) -> do
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(code, body, ct) `shouldBe` (200, "rawSuccess", "application"//"octet-stream")
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C.responseBody response `shouldBe` body
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C.responseStatus response `shouldBe` HTTP.ok200
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it "Servant.API.Raw should return a Left in case of failure" $ \(_, baseUrl) -> do
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res <- runClientM (getRawFailure HTTP.methodGet) (ClientEnv manager baseUrl)
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case res of
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Right _ -> assertFailure "expected Left, but got Right"
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Left e -> do
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Servant.Client.responseStatus e `shouldBe` HTTP.status400
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Servant.Client.responseBody e `shouldBe` "rawFailure"
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it "Returns headers appropriately" $ \(_, baseUrl) -> do
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res <- runClientM getRespHeaders (ClientEnv manager 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 <$> runClientM (getMultiple cap num flag body) (ClientEnv manager 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 $ ServantErr 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 :: SCR.ClientM ()
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getResponse = client (Proxy :: Proxy ClientM) api
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Left FailureResponse{..} <- runClientM getResponse (ClientEnv manager baseUrl)
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responseStatus `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 (Proxy :: Proxy ClientM) api
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Left res <- runClientM getDeleteEmpty (ClientEnv manager baseUrl)
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case res of
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FailureResponse _ (HTTP.Status 404 "Not Found") _ _ -> 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 (Proxy :: Proxy ClientM) api
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Left res <- runClientM (getCapture "foo") (ClientEnv manager baseUrl)
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case res of
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DecodeFailure _ ("application/json") _ -> return ()
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_ -> fail $ "expected DecodeFailure, but got " <> show res
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it "reports ConnectionError" $ \_ -> do
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let (getGetWrongHost :<|> _) = client (Proxy :: Proxy ClientM) api
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Left res <- runClientM getGetWrongHost (ClientEnv manager (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 (Proxy :: Proxy ClientM) api
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Left res <- runClientM getGet (ClientEnv manager 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 (Proxy :: Proxy ClientM) api
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Left res <- runClientM (getBody alice) (ClientEnv manager baseUrl)
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case res of
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InvalidContentTypeHeader "fooooo" _ -> 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 ~ SCR.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 (Proxy :: Proxy ClientM) basicAuthAPI
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let basicAuthData = BasicAuthData "servant" "server"
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(left show <$> runClientM (getBasic basicAuthData) (ClientEnv manager 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 (Proxy :: Proxy ClientM) basicAuthAPI
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let basicAuthData = BasicAuthData "not" "password"
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Left FailureResponse{..} <- runClientM (getBasic basicAuthData) (ClientEnv manager baseUrl)
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responseStatus `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 (Proxy :: Proxy ClientM) genAuthAPI
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let authRequest = mkAuthenticateReq () (\_ req -> SCR.addHeader "AuthHeader" ("cool" :: String) req)
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(left show <$> runClientM (getProtected authRequest) (ClientEnv manager 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 (Proxy :: Proxy ClientM) genAuthAPI
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let authRequest = mkAuthenticateReq () (\_ req -> SCR.addHeader "Wrong" ("header" :: String) req)
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Left FailureResponse{..} <- runClientM (getProtected authRequest) (ClientEnv manager baseUrl)
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responseStatus `shouldBe` (HTTP.Status 401 "Unauthorized")
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|
|
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genericClientSpec :: Spec
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genericClientSpec = beforeAll (startWaiApp genericClientServer) $ afterAll endWaiApp $ do
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describe "Servant.Client.Generic" $ do
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|
|
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let GenericClient{..} = mkClient (client (Proxy :: Proxy ClientM) (Proxy :: Proxy GenericClientAPI))
|
|
NestedClient1{..} = mkNestedClient1 "example"
|
|
NestedClient2{..} = mkNestedClient2 (Just 42)
|
|
|
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it "works for top-level client (Proxy :: Proxy ClientM) function" $ \(_, baseUrl) -> do
|
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(left show <$> (runClientM (getSqr (Just 5)) (ClientEnv manager baseUrl))) `shouldReturn` Right 25
|
|
|
|
it "works for nested clients" $ \(_, baseUrl) -> do
|
|
(left show <$> (runClientM (idChar (Just 'c')) (ClientEnv manager baseUrl))) `shouldReturn` Right 'c'
|
|
(left show <$> (runClientM (getSum 3 4) (ClientEnv manager baseUrl))) `shouldReturn` Right 7
|
|
(left show <$> (runClientM doNothing (ClientEnv manager baseUrl))) `shouldReturn` Right ()
|
|
|
|
-- * 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 "localhost" port "")
|
|
|
|
|
|
endWaiApp :: (ThreadId, BaseUrl) -> IO ()
|
|
endWaiApp (thread, _) = killThread thread
|
|
|
|
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)
|
|
|
|
pathGen :: Gen (NonEmptyList Char)
|
|
pathGen = fmap NonEmpty path
|
|
where
|
|
path = listOf1 $ elements $
|
|
filter (not . (`elem` ("?%[]/#;" :: String))) $
|
|
filter isPrint $
|
|
map chr [0..127]
|