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{- This Source Code Form is subject to the terms of the Mozilla Public License,
v. 2.0. If a copy of the MPL was not distributed with this file, You can
obtain one at https://mozilla.org/MPL/2.0/. -}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TemplateHaskell #-}
module Language.GraphQL.ClassSpec
( spec
) where
import Data.Text (Text)
import Data.Time (UTCTime(..))
import Data.Time.Calendar.OrdinalDate (fromOrdinalDate)
import qualified Language.GraphQL.Type as Type
import Language.GraphQL.Class (FromGraphQL(..), ToGraphQL(..), deriveToGraphQL)
import Test.Hspec (Spec, describe, it, shouldBe)
import qualified Data.HashMap.Strict as HashMap
data TwoFieldRecord = TwoFieldRecord
{ x :: Int
, y :: Bool
}
$(deriveToGraphQL ''TwoFieldRecord)
spec :: Spec
spec = do
describe "ToGraphQL" $ do
it "converts integers" $
toGraphQL (5 :: Int) `shouldBe` Type.Int 5
it "converts text" $
toGraphQL ("String" :: Text) `shouldBe` Type.String "String"
it "converts booleans" $
toGraphQL True `shouldBe` Type.Boolean True
it "converts Nothing to Null" $
toGraphQL (Nothing :: Maybe Int) `shouldBe` Type.Null
it "converts singleton lists" $
toGraphQL [True] `shouldBe` Type.List [Type.Boolean True]
it "converts UTCTime" $
let given = UTCTime
{ utctDay = fromOrdinalDate 2023 5
, utctDayTime = 90
}
actual = toGraphQL given
expected = Type.String "2023-01-05T00:01:30Z"
in actual `shouldBe` expected
describe "FromGraphQL" $ do
it "converts integers" $
fromGraphQL (Type.Int 5) `shouldBe` Just (5 :: Int)
it "converts text" $
fromGraphQL (Type.String "String") `shouldBe` Just ("String" :: Text)
it "converts booleans" $
fromGraphQL (Type.Boolean True) `shouldBe` Just True
it "converts Null to Nothing" $
fromGraphQL Type.Null `shouldBe` Just (Nothing :: Maybe Int)
it "converts singleton lists" $
fromGraphQL (Type.List [Type.Boolean True]) `shouldBe` Just [True]
it "converts UTCTime" $
let given = Type.String "2023-01-05T00:01:30Z"
expected = Just $ UTCTime
{ utctDay = fromOrdinalDate 2023 5
, utctDayTime = 90
}
actual = fromGraphQL given
in actual `shouldBe` expected
describe "deriveToGraphQL" $ do
it "derives ToGraphQL for a record" $ do
let expected = Type.Object $ HashMap.fromList
[ ("x", Type.Int 1)
, ("y", Type.Boolean True)
, ("__typename", Type.String "TwoFieldRecord")
]
given = TwoFieldRecord
{ x = 1
, y = True
}
in toGraphQL given `shouldBe` expected
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