547 lines
18 KiB
Haskell
547 lines
18 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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{-# LANGUAGE QuasiQuotes #-}
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module Language.GraphQL.ValidateSpec
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( spec
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) where
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import Data.Foldable (toList)
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import qualified Data.HashMap.Strict as HashMap
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import Data.Text (Text)
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import qualified Language.GraphQL.AST as AST
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import Language.GraphQL.Type
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import qualified Language.GraphQL.Type.In as In
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import qualified Language.GraphQL.Type.Out as Out
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import Language.GraphQL.Validate
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import Test.Hspec (Spec, describe, it, shouldBe, shouldContain)
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import Text.Megaparsec (parse)
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import Text.RawString.QQ (r)
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schema :: Schema IO
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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 :: ObjectType IO
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queryType = ObjectType "Query" Nothing [] $ HashMap.fromList
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[ ("dog", dogResolver)
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, ("findDog", findDogResolver)
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]
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where
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dogField = Field Nothing (Out.NamedObjectType dogType) mempty
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dogResolver = ValueResolver dogField $ pure Null
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findDogArguments = HashMap.singleton "complex"
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$ In.Argument Nothing (In.NonNullInputObjectType dogDataType) Nothing
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findDogField = Field Nothing (Out.NamedObjectType dogType) findDogArguments
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findDogResolver = ValueResolver findDogField $ pure Null
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dogCommandType :: EnumType
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dogCommandType = EnumType "DogCommand" Nothing $ HashMap.fromList
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[ ("SIT", EnumValue Nothing)
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, ("DOWN", EnumValue Nothing)
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, ("HEEL", EnumValue Nothing)
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]
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dogType :: ObjectType IO
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dogType = ObjectType "Dog" Nothing [petType] $ HashMap.fromList
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[ ("name", nameResolver)
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, ("nickname", nicknameResolver)
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, ("barkVolume", barkVolumeResolver)
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, ("doesKnowCommand", doesKnowCommandResolver)
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, ("isHousetrained", isHousetrainedResolver)
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, ("owner", ownerResolver)
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]
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where
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nameField = Field Nothing (Out.NonNullScalarType string) mempty
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nameResolver = ValueResolver nameField $ pure "Name"
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nicknameField = Field Nothing (Out.NamedScalarType string) mempty
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nicknameResolver = ValueResolver nicknameField $ pure "Nickname"
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barkVolumeField = Field Nothing (Out.NamedScalarType int) mempty
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barkVolumeResolver = ValueResolver barkVolumeField $ pure $ Int 3
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doesKnowCommandField = Field Nothing (Out.NonNullScalarType boolean)
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$ HashMap.singleton "dogCommand"
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$ In.Argument Nothing (In.NonNullEnumType dogCommandType) Nothing
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doesKnowCommandResolver = ValueResolver doesKnowCommandField
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$ pure $ Boolean True
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isHousetrainedField = Field Nothing (Out.NonNullScalarType boolean)
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$ HashMap.singleton "atOtherHomes"
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$ In.Argument Nothing (In.NamedScalarType boolean) Nothing
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isHousetrainedResolver = ValueResolver isHousetrainedField
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$ pure $ Boolean True
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ownerField = Field Nothing (Out.NamedObjectType humanType) mempty
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ownerResolver = ValueResolver ownerField $ pure Null
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dogDataType :: InputObjectType
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dogDataType = InputObjectType "DogData" Nothing
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$ HashMap.singleton "name" nameInputField
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where
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nameInputField = InputField Nothing (In.NonNullScalarType string) Nothing
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sentientType :: InterfaceType IO
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sentientType = InterfaceType "Sentient" Nothing []
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$ HashMap.singleton "name"
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$ Field Nothing (Out.NonNullScalarType string) mempty
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petType :: InterfaceType IO
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petType = InterfaceType "Pet" Nothing []
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$ HashMap.singleton "name"
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$ Field Nothing (Out.NonNullScalarType string) mempty
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subscriptionType :: ObjectType IO
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subscriptionType = ObjectType "Subscription" Nothing [] $ HashMap.fromList
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[ ("newMessage", newMessageResolver)
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]
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where
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newMessageField = Field Nothing (Out.NonNullObjectType messageType) mempty
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newMessageResolver = ValueResolver newMessageField
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$ pure $ Object HashMap.empty
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messageType :: ObjectType IO
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messageType = ObjectType "Message" Nothing [] $ HashMap.fromList
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[ ("sender", senderResolver)
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, ("body", bodyResolver)
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]
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where
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senderField = Field Nothing (Out.NonNullScalarType string) mempty
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senderResolver = ValueResolver senderField $ pure "Sender"
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bodyField = Field Nothing (Out.NonNullScalarType string) mempty
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bodyResolver = ValueResolver bodyField $ pure "Message body."
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humanType :: ObjectType IO
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humanType = ObjectType "Human" Nothing [sentientType] $ HashMap.fromList
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[ ("name", nameResolver)
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, ("pets", petsResolver)
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]
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where
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nameField = Field Nothing (Out.NonNullScalarType string) mempty
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nameResolver = ValueResolver nameField $ pure "Name"
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petsField =
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Field Nothing (Out.ListType $ Out.NonNullInterfaceType petType) mempty
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petsResolver = ValueResolver petsField $ pure $ List []
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{-
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catOrDogType :: UnionType IO
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catOrDogType = UnionType "CatOrDog" Nothing [catType, dogType]
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-}
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validate :: Text -> [Error]
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validate queryString =
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case parse AST.document "" queryString of
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Left _ -> []
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Right ast -> toList $ document schema specifiedRules ast
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spec :: Spec
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spec =
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describe "document" $ do
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it "rejects type definitions" $
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let queryString = [r|
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query getDogName {
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dog {
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name
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color
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}
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}
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extend type Dog {
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color: String
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}
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|]
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expected = Error
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{ message =
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"Definition must be OperationDefinition or FragmentDefinition."
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, locations = [AST.Location 9 15]
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}
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in validate queryString `shouldContain` [expected]
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it "rejects multiple subscription root fields" $
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let queryString = [r|
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subscription sub {
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newMessage {
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body
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sender
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}
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disallowedSecondRootField
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}
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|]
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expected = Error
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{ message =
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"Subscription sub must select only one top level field."
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, locations = [AST.Location 2 15]
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}
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in validate queryString `shouldContain` [expected]
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it "rejects multiple subscription root fields coming from a fragment" $
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let queryString = [r|
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subscription sub {
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...multipleSubscriptions
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}
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fragment multipleSubscriptions on Subscription {
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newMessage {
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body
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sender
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}
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disallowedSecondRootField
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}
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|]
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expected = Error
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{ message =
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"Subscription sub must select only one top level field."
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, locations = [AST.Location 2 15]
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}
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in validate queryString `shouldContain` [expected]
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it "rejects multiple anonymous operations" $
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let queryString = [r|
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{
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dog {
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name
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}
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}
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query getName {
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dog {
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owner {
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name
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}
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}
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}
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|]
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expected = Error
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{ message =
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"This anonymous operation must be the only defined operation."
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, locations = [AST.Location 2 15]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects operations with the same name" $
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let queryString = [r|
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query dogOperation {
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dog {
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name
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}
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}
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mutation dogOperation {
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mutateDog {
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id
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}
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}
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|]
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expected = Error
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{ message =
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"There can be only one operation named \"dogOperation\"."
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, locations = [AST.Location 2 15, AST.Location 8 15]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects fragments with the same name" $
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let queryString = [r|
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{
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dog {
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...fragmentOne
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}
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}
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fragment fragmentOne on Dog {
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name
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}
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fragment fragmentOne on Dog {
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owner {
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name
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}
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}
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|]
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expected = Error
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{ message =
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"There can be only one fragment named \"fragmentOne\"."
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, locations = [AST.Location 8 15, AST.Location 12 15]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects the fragment spread without a target" $
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let queryString = [r|
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{
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dog {
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...undefinedFragment
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}
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}
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|]
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expected = Error
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{ message =
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"Fragment target \"undefinedFragment\" is undefined."
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, locations = [AST.Location 4 19]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects fragment spreads without an unknown target type" $
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let queryString = [r|
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{
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dog {
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...notOnExistingType
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}
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}
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fragment notOnExistingType on NotInSchema {
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name
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}
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|]
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expected = Error
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{ message =
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"Fragment \"notOnExistingType\" is specified on type \
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\\"NotInSchema\" which doesn't exist in the schema."
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, locations = [AST.Location 4 19]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects inline fragments without a target" $
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let queryString = [r|
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{
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... on NotInSchema {
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name
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}
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}
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|]
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expected = Error
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{ message =
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"Inline fragment is specified on type \"NotInSchema\" \
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\which doesn't exist in the schema."
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, locations = [AST.Location 3 17]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects fragments on scalar types" $
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let queryString = [r|
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{
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dog {
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...fragOnScalar
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}
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}
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fragment fragOnScalar on Int {
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name
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}
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|]
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expected = Error
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{ message =
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"Fragment cannot condition on non composite type \
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\\"Int\"."
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, locations = [AST.Location 7 15]
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}
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in validate queryString `shouldContain` [expected]
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it "rejects inline fragments on scalar types" $
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let queryString = [r|
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{
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... on Boolean {
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name
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}
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}
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|]
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expected = Error
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{ message =
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"Fragment cannot condition on non composite type \
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\\"Boolean\"."
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, locations = [AST.Location 3 17]
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}
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in validate queryString `shouldContain` [expected]
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it "rejects unused fragments" $
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let queryString = [r|
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fragment nameFragment on Dog { # unused
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name
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}
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{
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dog {
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name
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}
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}
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|]
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expected = Error
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{ message =
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"Fragment \"nameFragment\" is never used."
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, locations = [AST.Location 2 15]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects spreads that form cycles" $
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let queryString = [r|
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{
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dog {
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...nameFragment
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}
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}
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fragment nameFragment on Dog {
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name
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...barkVolumeFragment
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}
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fragment barkVolumeFragment on Dog {
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barkVolume
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...nameFragment
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}
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|]
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error1 = Error
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{ message =
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"Cannot spread fragment \"barkVolumeFragment\" within \
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\itself (via barkVolumeFragment -> nameFragment -> \
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\barkVolumeFragment)."
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, locations = [AST.Location 11 15]
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}
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error2 = Error
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{ message =
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"Cannot spread fragment \"nameFragment\" within itself \
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\(via nameFragment -> barkVolumeFragment -> \
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\nameFragment)."
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, locations = [AST.Location 7 15]
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}
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in validate queryString `shouldBe` [error1, error2]
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it "rejects duplicate field arguments" $ do
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let queryString = [r|
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{
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dog {
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isHousetrained(atOtherHomes: true, atOtherHomes: true)
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}
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}
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|]
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expected = Error
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{ message =
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"There can be only one argument named \"atOtherHomes\"."
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, locations = [AST.Location 4 34, AST.Location 4 54]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects more than one directive per location" $ do
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let queryString = [r|
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query ($foo: Boolean = true, $bar: Boolean = false) {
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dog @skip(if: $foo) @skip(if: $bar) {
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name
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}
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}
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|]
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expected = Error
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{ message =
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"There can be only one directive named \"skip\"."
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, locations = [AST.Location 3 21, AST.Location 3 37]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects duplicate variables" $
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let queryString = [r|
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query houseTrainedQuery($atOtherHomes: Boolean, $atOtherHomes: Boolean) {
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dog {
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isHousetrained(atOtherHomes: $atOtherHomes)
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}
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}
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|]
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expected = Error
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{ message =
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"There can be only one variable named \"atOtherHomes\"."
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, locations = [AST.Location 2 39, AST.Location 2 63]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects non-input types as variables" $
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let queryString = [r|
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query takesDogBang($dog: Dog!) {
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dog {
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isHousetrained(atOtherHomes: $dog)
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}
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}
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|]
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expected = Error
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{ message =
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"Variable \"$dog\" cannot be non-input type \"Dog\"."
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, locations = [AST.Location 2 34]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects undefined variables" $
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let queryString = [r|
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query variableIsNotDefinedUsedInSingleFragment {
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dog {
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...isHousetrainedFragment
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}
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}
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fragment isHousetrainedFragment on Dog {
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isHousetrained(atOtherHomes: $atOtherHomes)
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}
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|]
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expected = Error
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{ message =
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"Variable \"$atOtherHomes\" is not defined by \
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\operation \
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\\"variableIsNotDefinedUsedInSingleFragment\"."
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, locations = [AST.Location 9 46]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects unused variables" $
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let queryString = [r|
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query variableUnused($atOtherHomes: Boolean) {
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dog {
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isHousetrained
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}
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}
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|]
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expected = Error
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{ message =
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"Variable \"$atOtherHomes\" is never used in operation \
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\\"variableUnused\"."
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, locations = [AST.Location 2 36]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects duplicate fields in input objects" $
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let queryString = [r|
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{
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findDog(complex: { name: "Fido", name: "Jack" }) {
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name
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}
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}
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|]
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expected = Error
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{ message =
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"There can be only one input field named \"name\"."
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, locations = [AST.Location 3 36, AST.Location 3 50]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects undefined fields" $
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let queryString = [r|
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{
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dog {
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meowVolume
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}
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}
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|]
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expected = Error
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{ message =
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"Cannot query field \"meowVolume\" on type \"Dog\"."
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, locations = [AST.Location 4 19]
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}
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in validate queryString `shouldBe` [expected]
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it "rejects scalar fields with not empty selection set" $
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let queryString = [r|
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{
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dog {
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barkVolume {
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sinceWhen
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}
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}
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}
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|]
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expected = Error
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{ message =
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"Field \"barkVolume\" must not have a selection since \
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\type \"Int\" has no subfields."
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, locations = [AST.Location 4 19]
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}
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in validate queryString `shouldBe` [expected]
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