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|
{-# LANGUAGE OverloadedStrings #-}
module Language.GraphQL.ExecuteSpec
( spec
) where
import Data.Aeson ((.=))
import qualified Data.Aeson as Aeson
import Data.Functor.Identity (Identity(..))
import Data.HashMap.Strict (HashMap)
import qualified Data.HashMap.Strict as HashMap
import Language.GraphQL.AST (Name)
import Language.GraphQL.AST.Parser (document)
import Language.GraphQL.Error
import Language.GraphQL.Execute
import Language.GraphQL.Type as Type
import Language.GraphQL.Type.Out as Out
import Test.Hspec (Spec, describe, it, shouldBe)
import Text.Megaparsec (parse)
schema :: Schema Identity
schema = Schema {query = queryType, mutation = Nothing}
queryType :: Out.ObjectType Identity
queryType = Out.ObjectType "Query" Nothing []
$ HashMap.singleton "philosopher"
$ Out.Resolver philosopherField
$ pure
$ Type.Object mempty
where
philosopherField =
Out.Field Nothing (Out.NonNullObjectType philosopherType) HashMap.empty
philosopherType :: Out.ObjectType Identity
philosopherType = Out.ObjectType "Philosopher" Nothing []
$ HashMap.fromList resolvers
where
resolvers =
[ ("firstName", firstNameResolver)
, ("lastName", lastNameResolver)
]
firstNameResolver = Out.Resolver firstNameField $ pure $ Type.String "Friedrich"
lastNameResolver = Out.Resolver lastNameField $ pure $ Type.String "Nietzsche"
firstNameField = Out.Field Nothing (Out.NonNullScalarType string) HashMap.empty
lastNameField = Out.Field Nothing (Out.NonNullScalarType string) HashMap.empty
spec :: Spec
spec =
describe "execute" $ do
it "skips unknown fields" $
let expected = Aeson.object
[ "data" .= Aeson.object
[ "philosopher" .= Aeson.object
[ "firstName" .= ("Friedrich" :: String)
]
]
]
execute' = execute schema (mempty :: HashMap Name Aeson.Value)
actual = runIdentity
$ either parseError execute'
$ parse document "" "{ philosopher { firstName surname } }"
in actual `shouldBe` expected
it "merges selections" $
let expected = Aeson.object
[ "data" .= Aeson.object
[ "philosopher" .= Aeson.object
[ "firstName" .= ("Friedrich" :: String)
, "lastName" .= ("Nietzsche" :: String)
]
]
]
execute' = execute schema (mempty :: HashMap Name Aeson.Value)
actual = runIdentity
$ either parseError execute'
$ parse document "" "{ philosopher { firstName } philosopher { lastName } }"
in actual `shouldBe` expected
|
