114 lines
4.6 KiB
Haskell
114 lines
4.6 KiB
Haskell
{- This Source Code Form is subject to the terms of the Mozilla Public License,
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v. 2.0. If a copy of the MPL was not distributed with this file, You can
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obtain one at https://mozilla.org/MPL/2.0/. -}
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{-# LANGUAGE OverloadedStrings #-}
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module Language.GraphQL.ExecuteSpec
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( spec
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) where
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import Control.Exception (SomeException)
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import Data.Aeson ((.=))
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import qualified Data.Aeson as Aeson
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import Data.Conduit
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import Data.HashMap.Strict (HashMap)
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import qualified Data.HashMap.Strict as HashMap
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import Language.GraphQL.AST (Name)
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import Language.GraphQL.AST.Parser (document)
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import Language.GraphQL.Error
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import Language.GraphQL.Execute
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import Language.GraphQL.Type as Type
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import Language.GraphQL.Type.Out as Out
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import Test.Hspec (Spec, context, describe, it, shouldBe)
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import Text.Megaparsec (parse)
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schema :: Schema (Either SomeException)
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schema = Schema
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{ query = queryType
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, mutation = Nothing
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, subscription = Just subscriptionType
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}
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queryType :: Out.ObjectType (Either SomeException)
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queryType = Out.ObjectType "Query" Nothing []
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$ HashMap.singleton "philosopher"
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$ ValueResolver philosopherField
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$ pure $ Type.Object mempty
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where
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philosopherField =
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Out.Field Nothing (Out.NonNullObjectType philosopherType) HashMap.empty
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philosopherType :: Out.ObjectType (Either SomeException)
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philosopherType = Out.ObjectType "Philosopher" Nothing []
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$ HashMap.fromList resolvers
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where
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resolvers =
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[ ("firstName", ValueResolver firstNameField firstNameResolver)
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, ("lastName", ValueResolver lastNameField lastNameResolver)
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]
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firstNameField =
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Out.Field Nothing (Out.NonNullScalarType string) HashMap.empty
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firstNameResolver = pure $ Type.String "Friedrich"
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lastNameField
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= Out.Field Nothing (Out.NonNullScalarType string) HashMap.empty
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lastNameResolver = pure $ Type.String "Nietzsche"
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subscriptionType :: Out.ObjectType (Either SomeException)
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subscriptionType = Out.ObjectType "Subscription" Nothing []
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$ HashMap.singleton "newQuote"
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$ EventStreamResolver quoteField (pure $ Type.Object mempty)
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$ pure $ yield $ Type.Object mempty
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where
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quoteField =
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Out.Field Nothing (Out.NonNullObjectType quoteType) HashMap.empty
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quoteType :: Out.ObjectType (Either SomeException)
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quoteType = Out.ObjectType "Quote" Nothing []
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$ HashMap.singleton "quote"
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$ ValueResolver quoteField
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$ pure "Naturam expelles furca, tamen usque recurret."
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where
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quoteField =
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Out.Field Nothing (Out.NonNullScalarType string) HashMap.empty
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spec :: Spec
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spec =
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describe "execute" $ do
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context "Query" $ do
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it "skips unknown fields" $
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let data'' = Aeson.object
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[ "philosopher" .= Aeson.object
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[ "firstName" .= ("Friedrich" :: String)
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]
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]
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expected = Response data'' mempty
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execute' = execute schema Nothing (mempty :: HashMap Name Aeson.Value)
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Right (Right actual) = either (pure . parseError) execute'
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$ parse document "" "{ philosopher { firstName surname } }"
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in actual `shouldBe` expected
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it "merges selections" $
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let data'' = Aeson.object
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[ "philosopher" .= Aeson.object
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[ "firstName" .= ("Friedrich" :: String)
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, "lastName" .= ("Nietzsche" :: String)
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]
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]
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expected = Response data'' mempty
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execute' = execute schema Nothing (mempty :: HashMap Name Aeson.Value)
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Right (Right actual) = either (pure . parseError) execute'
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$ parse document "" "{ philosopher { firstName } philosopher { lastName } }"
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in actual `shouldBe` expected
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context "Subscription" $
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it "subscribes" $
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let data'' = Aeson.object
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[ "newQuote" .= Aeson.object
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[ "quote" .= ("Naturam expelles furca, tamen usque recurret." :: String)
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]
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]
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expected = Response data'' mempty
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execute' = execute schema Nothing (mempty :: HashMap Name Aeson.Value)
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Right (Left stream) = either (pure . parseError) execute'
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$ parse document "" "subscription { newQuote { quote } }"
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Right (Just actual) = runConduit $ stream .| await
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in actual `shouldBe` expected
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