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Coerce result

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Fixes #45.
This commit is contained in:
Eugen Wissner
2020-06-13 07:20:19 +02:00
parent e8c54810f8
commit 882276a845
10 changed files with 278 additions and 184 deletions
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37
tests/Language/GraphQL/Execute/CoerceSpec.hs
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@ -9,7 +9,7 @@ import qualified Data.Aeson.Types as Aeson
import qualified Data.HashMap.Strict as HashMap
import Data.Maybe (isNothing)
import Data.Scientific (scientific)
import Language.GraphQL.Execute.Coerce
import qualified Language.GraphQL.Execute.Coerce as Coerce
import Language.GraphQL.Type.Definition
import qualified Language.GraphQL.Type.In as In
import Prelude hiding (id)
@ -30,55 +30,58 @@ singletonInputObject = In.NamedInputObjectType type'
inputFields = HashMap.singleton "field" field
field = In.InputField Nothing (In.NamedScalarType string) Nothing
namedIdType :: In.Type
namedIdType = In.NamedScalarType id
spec :: Spec
spec = do
describe "VariableValue Aeson" $ do
it "coerces strings" $
let expected = Just (String "asdf")
actual = coerceVariableValue
actual = Coerce.coerceVariableValue
(In.NamedScalarType string) (Aeson.String "asdf")
in actual `shouldBe` expected
it "coerces non-null strings" $
let expected = Just (String "asdf")
actual = coerceVariableValue
actual = Coerce.coerceVariableValue
(In.NonNullScalarType string) (Aeson.String "asdf")
in actual `shouldBe` expected
it "coerces booleans" $
let expected = Just (Boolean True)
actual = coerceVariableValue
actual = Coerce.coerceVariableValue
(In.NamedScalarType boolean) (Aeson.Bool True)
in actual `shouldBe` expected
it "coerces zero to an integer" $
let expected = Just (Int 0)
actual = coerceVariableValue
actual = Coerce.coerceVariableValue
(In.NamedScalarType int) (Aeson.Number 0)
in actual `shouldBe` expected
it "rejects fractional if an integer is expected" $
let actual = coerceVariableValue
let actual = Coerce.coerceVariableValue
(In.NamedScalarType int) (Aeson.Number $ scientific 14 (-1))
in actual `shouldSatisfy` isNothing
it "coerces float numbers" $
let expected = Just (Float 1.4)
actual = coerceVariableValue
actual = Coerce.coerceVariableValue
(In.NamedScalarType float) (Aeson.Number $ scientific 14 (-1))
in actual `shouldBe` expected
it "coerces IDs" $
let expected = Just (String "1234")
actual = coerceVariableValue
(In.NamedScalarType id) (Aeson.String "1234")
json = Aeson.String "1234"
actual = Coerce.coerceVariableValue namedIdType json
in actual `shouldBe` expected
it "coerces input objects" $
let actual = coerceVariableValue singletonInputObject
let actual = Coerce.coerceVariableValue singletonInputObject
$ 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 = coerceVariableValue
let actual = Coerce.coerceVariableValue
singletonInputObject Aeson.emptyObject
expected = Just $ Object HashMap.empty
in actual `shouldBe` expected
it "fails if input object value contains extra fields" $
let actual = coerceVariableValue singletonInputObject
let actual = Coerce.coerceVariableValue singletonInputObject
$ Aeson.object variableFields
variableFields =
[ "field" .= ("asdf" :: Aeson.Value)
@ -86,26 +89,26 @@ spec = do
]
in actual `shouldSatisfy` isNothing
it "preserves null" $
let actual = coerceVariableValue (In.NamedScalarType id) Aeson.Null
let actual = Coerce.coerceVariableValue namedIdType Aeson.Null
in actual `shouldBe` Just Null
it "preserves list order" $
let list = Aeson.toJSONList ["asdf" :: Aeson.Value, "qwer"]
listType = (In.ListType $ In.NamedScalarType string)
actual = coerceVariableValue listType list
actual = Coerce.coerceVariableValue listType list
expected = Just $ List [String "asdf", String "qwer"]
in actual `shouldBe` expected
describe "coerceInputLiterals" $ do
it "coerces enums" $
let expected = Just (Enum "NORTH")
actual = coerceInputLiteral
actual = Coerce.coerceInputLiteral
(In.NamedEnumType direction) (Enum "NORTH")
in actual `shouldBe` expected
it "fails with non-existing enum value" $
let actual = coerceInputLiteral
let actual = Coerce.coerceInputLiteral
(In.NamedEnumType direction) (Enum "NORTH_EAST")
in actual `shouldSatisfy` isNothing
it "coerces integers to IDs" $
let expected = Just (String "1234")
actual = coerceInputLiteral (In.NamedScalarType id) (Int 1234)
actual = Coerce.coerceInputLiteral namedIdType (Int 1234)
in actual `shouldBe` expected