servant/servant-client/test/Servant/BrokenSpec.hs

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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeOperators #-}
{-# OPTIONS_GHC -freduction-depth=100 #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
{-# OPTIONS_GHC -fno-warn-name-shadowing #-}
module Servant.BrokenSpec (spec) where
import Prelude ()
import Prelude.Compat
import Data.Monoid ()
import Data.Proxy
import qualified Network.HTTP.Types as HTTP
import Test.Hspec
import Servant.API
((:<|>) ((:<|>)), (:>), JSON, Verb, Get, StdMethod (GET))
import Servant.Client
import Servant.ClientTestUtils
import Servant.Server
-- * api for testing inconsistencies between client and server
type Get201 = Verb 'GET 201
type Get301 = Verb 'GET 301
type BrokenAPI =
-- the server should respond with 200, but returns 201
"get200" :> Get201 '[JSON] ()
-- the server should respond with 307, but returns 301
:<|> "get307" :> Get301 '[JSON] ()
brokenApi :: Proxy BrokenAPI
brokenApi = Proxy
brokenServer :: Application
brokenServer = serve brokenApi (pure () :<|> pure ())
type PublicAPI =
-- the client expects 200
"get200" :> Get '[JSON] ()
-- the client expects 307
:<|> "get307" :> Get307 '[JSON] ()
publicApi :: Proxy PublicAPI
publicApi = Proxy
get200Client :: ClientM ()
get307Client :: ClientM ()
get200Client :<|> get307Client = client publicApi
spec :: Spec
spec = describe "Servant.BrokenSpec" $ do
brokenSpec
brokenSpec :: Spec
brokenSpec = beforeAll (startWaiApp brokenServer) $ afterAll endWaiApp $ do
context "client returns errors for inconsistencies between client and server api" $ do
it "reports FailureResponse with wrong 2xx status code" $ \(_, baseUrl) -> do
res <- runClient get200Client baseUrl
case res of
Left (FailureResponse _ r) | responseStatusCode r == HTTP.status201 -> return ()
_ -> fail $ "expected 201 broken response, but got " <> show res
it "reports FailureResponse with wrong 3xx status code" $ \(_, baseUrl) -> do
res <- runClient get307Client baseUrl
case res of
Left (FailureResponse _ r) | responseStatusCode r == HTTP.status301 -> return ()
_ -> fail $ "expected 301 broken response, but got " <> show res