graphql-engine/server/src-test/Hasura/GraphQL/Parser/TestUtils.hs
Auke Booij e805fc01f3 Avoid NonNullableType
This refactors the AST of GraphQL types so that we don't need `NonNullableType`.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3178
GitOrigin-RevId: 6513c8ea0a3cf4ad3ca7d8ef9ca996912fd5eedc
2021-12-20 17:03:28 +00:00

55 lines
1.7 KiB
Haskell

module Hasura.GraphQL.Parser.TestUtils
( TestMonad (..),
fakeScalar,
fakeInputFieldValue,
fakeDirective,
)
where
import Data.HashMap.Strict qualified as M
import Data.List.NonEmpty qualified as NE
import Data.Text qualified as T
import Hasura.GraphQL.Parser.Class.Parse
import Hasura.GraphQL.Parser.Schema
import Hasura.Prelude
import Language.GraphQL.Draft.Syntax qualified as G
-- test monad
newtype TestMonad a = TestMonad {runTest :: Either Text a}
deriving (Functor, Applicative, Monad)
instance MonadParse TestMonad where
withPath = const id
parseErrorWith = const $ TestMonad . Left
-- values generation
fakeScalar :: G.Name -> G.Value Variable
fakeScalar =
G.unName >>> \case
"Int" -> G.VInt 4242
"Boolean" -> G.VBoolean False
name -> error $ "no test value implemented for scalar " <> T.unpack name
fakeInputFieldValue :: InputFieldInfo -> G.Value Variable
fakeInputFieldValue (InputFieldInfo t _) = go t
where
go :: forall k. ('Input <: k) => Type k -> G.Value Variable
go = \case
TList _ t' -> G.VList [go t', go t']
TNamed _ (Definition name _ info) -> case (info, subKind @'Input @k) of
(TIScalar, _) -> fakeScalar name
(TIEnum ei, _) -> G.VEnum $ G.EnumValue $ dName $ NE.head ei
(TIInputObject (InputObjectInfo oi), _) -> G.VObject $
M.fromList $ do
Definition fieldName _ fieldInfo <- oi
pure (fieldName, fakeInputFieldValue fieldInfo)
fakeDirective :: DirectiveInfo -> G.Directive Variable
fakeDirective DirectiveInfo {..} =
G.Directive diName $
M.fromList $
diArguments <&> \(Definition argName _ argInfo) ->
(argName, fakeInputFieldValue argInfo)