servant/servant-foreign/test/Servant/ForeignSpec.hs

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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE TypeSynonymInstances #-}
{-# LANGUAGE ScopedTypeVariables #-}
module Servant.ForeignSpec where
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import Data.Monoid ((<>))
import Data.Proxy
import Servant.Foreign
import Servant.Foreign.Internal
import Test.Hspec
spec :: Spec
spec = describe "Servant.Foreign" $ do
camelCaseSpec
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listFromAPISpec
camelCaseSpec :: Spec
camelCaseSpec = describe "camelCase" $ do
it "converts FunctionNames to camelCase" $ do
camelCase ["post", "counter", "inc"] `shouldBe` "postCounterInc"
camelCase ["get", "hyphen-ated", "counter"] `shouldBe` "getHyphenatedCounter"
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----------------------------------------------------------------------
data LangX
instance HasForeignType LangX () where
typeFor _ _ = "voidX"
instance HasForeignType LangX Int where
typeFor _ _ = "intX"
instance HasForeignType LangX Bool where
typeFor _ _ = "boolX"
instance {-# Overlapping #-} HasForeignType LangX String where
typeFor _ _ = "stringX"
instance {-# Overlapable #-} HasForeignType LangX a => HasForeignType LangX [a] where
typeFor lang _ = "listX of " <> typeFor lang (Proxy :: Proxy a)
type TestApi
= "test" :> Header "header" [String] :> QueryFlag "flag" :> Get '[JSON] Int
:<|> "test" :> QueryParam "param" Int :> ReqBody '[JSON] [String] :> Post '[JSON] ()
:<|> "test" :> QueryParams "params" Int :> ReqBody '[JSON] String :> Put '[JSON] ()
:<|> "test" :> Capture "id" Int :> Delete '[JSON] ()
testApi :: [Req]
testApi = listFromAPI (Proxy :: Proxy LangX) (Proxy :: Proxy TestApi)
listFromAPISpec :: Spec
listFromAPISpec = describe "listFromAPI" $ do
it "generates 4 endpoints for TestApi" $ do
length testApi `shouldBe` 4
let [getReq, postReq, putReq, deleteReq] = testApi
it "collects all info for get request" $ do
shouldBe getReq $ defReq
{ _reqUrl = Url
[ Segment $ Static "test" ]
[ QueryArg ("flag", "boolX") Flag ]
, _reqMethod = "GET"
, _reqHeaders = [HeaderArg ("header", "listX of stringX")]
, _reqBody = Nothing
, _reqReturnType = "intX"
, _funcName = ["get", "test"]
}
it "collects all info for post request" $ do
shouldBe postReq $ defReq
{ _reqUrl = Url
[ Segment $ Static "test" ]
[ QueryArg ("param", "intX") Normal ]
, _reqMethod = "POST"
, _reqHeaders = []
, _reqBody = Just "listX of stringX"
, _reqReturnType = "voidX"
, _funcName = ["post", "test"]
}
it "collects all info for put request" $ do
shouldBe putReq $ defReq
{ _reqUrl = Url
[ Segment $ Static "test" ]
-- Shoud this be |intX| or |listX of intX| ?
[ QueryArg ("params", "listX of intX") List ]
, _reqMethod = "PUT"
, _reqHeaders = []
, _reqBody = Just "stringX"
, _reqReturnType = "voidX"
, _funcName = ["put", "test"]
}
it "collects all info for delete request" $ do
shouldBe deleteReq $ defReq
{ _reqUrl = Url
[ Segment $ Static "test"
, Segment $ Cap ("id", "intX") ]
[]
, _reqMethod = "DELETE"
, _reqHeaders = []
, _reqBody = Nothing
, _reqReturnType = "voidX"
, _funcName = ["delete", "test", "by", "id"]
}