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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 #-}
module Language.GraphQL.CoerceSpec
( spec
) where
import Data.Aeson as Aeson ((.=))
import qualified Data.Aeson as Aeson
import qualified Data.Aeson.Types as Aeson
import qualified Data.HashMap.Strict as HashMap
import Data.Maybe (isNothing)
import Data.Scientific (scientific)
import qualified Language.GraphQL.Execute.Coerce as Coerce
import Language.GraphQL.JSON (JSON(..))
import qualified Language.GraphQL.Type.In as In
import Language.GraphQL.Type
import Prelude hiding (id)
import Test.Hspec (Spec, describe, it, shouldBe, shouldSatisfy)
singletonInputObject :: In.Type
singletonInputObject = In.NamedInputObjectType type'
where
type' = In.InputObjectType "ObjectName" Nothing inputFields
inputFields = HashMap.singleton "field" field
field = In.InputField Nothing (In.NamedScalarType string) Nothing
namedIdType :: In.Type
namedIdType = In.NamedScalarType id
spec :: Spec
spec =
describe "VariableValue Aeson" $ do
it "coerces strings" $
let expected = Just (String "asdf")
actual = Coerce.coerceVariableValue (In.NamedScalarType string)
$ JSON $ Aeson.String "asdf"
in actual `shouldBe` expected
it "coerces non-null strings" $
let expected = Just (String "asdf")
actual = Coerce.coerceVariableValue (In.NonNullScalarType string)
$ JSON $ Aeson.String "asdf"
in actual `shouldBe` expected
it "coerces booleans" $
let expected = Just (Boolean True)
actual = Coerce.coerceVariableValue (In.NamedScalarType boolean)
$ JSON $ Aeson.Bool True
in actual `shouldBe` expected
it "coerces zero to an integer" $
let expected = Just (Int 0)
actual = Coerce.coerceVariableValue (In.NamedScalarType int)
$ JSON $ Aeson.Number 0
in actual `shouldBe` expected
it "rejects fractional if an integer is expected" $
let actual = Coerce.coerceVariableValue (In.NamedScalarType int)
$ JSON $ Aeson.Number $ scientific 14 (-1)
in actual `shouldSatisfy` isNothing
it "coerces float numbers" $
let expected = Just (Float 1.4)
actual = Coerce.coerceVariableValue (In.NamedScalarType float)
$ JSON $ Aeson.Number $ scientific 14 (-1)
in actual `shouldBe` expected
it "coerces IDs" $
let expected = Just (String "1234")
json = JSON $ Aeson.String "1234"
actual = Coerce.coerceVariableValue namedIdType json
in actual `shouldBe` expected
it "coerces input objects" $
let actual = Coerce.coerceVariableValue singletonInputObject
$ JSON
$ Aeson.object ["field" .= ("asdf" :: Aeson.Value)]
expected = Just $ Object $ HashMap.singleton "field" "asdf"
in actual `shouldBe` expected
it "skips the field if it is missing in the variables" $
let actual = Coerce.coerceVariableValue singletonInputObject
$ JSON Aeson.emptyObject
expected = Just $ Object HashMap.empty
in actual `shouldBe` expected
it "fails if input object value contains extra fields" $
let actual = Coerce.coerceVariableValue singletonInputObject
$ JSON $ Aeson.object variableFields
variableFields =
[ "field" .= ("asdf" :: Aeson.Value)
, "extra" .= ("qwer" :: Aeson.Value)
]
in actual `shouldSatisfy` isNothing
it "preserves null" $
let actual = Coerce.coerceVariableValue namedIdType
$ JSON Aeson.Null
in actual `shouldBe` Just Null
it "preserves list order" $
let list = JSON $ Aeson.toJSONList ["asdf" :: Aeson.Value, "qwer"]
listType = (In.ListType $ In.NamedScalarType string)
actual = Coerce.coerceVariableValue listType list
expected = Just $ List [String "asdf", String "qwer"]
in actual `shouldBe` expected
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