ClassCastException when walking over input types that have GraphQLTypeReferences #99
Description
Describe the bug
java.lang.ClassCastException: class graphql.schema.GraphQLTypeReference cannot be cast to class graphql.schema.GraphQLUnmodifiedType (graphql.schema.GraphQLTypeReference and graphql.schema.GraphQLUnmodifiedType are in unnamed module of loader 'app')
at graphql.schema.GraphQLTypeUtil.unwrapAll(GraphQLTypeUtil.java:194)
at graphql.validation.util.DirectivesAndTypeWalker.walkInputType(DirectivesAndTypeWalker.java:23)
at graphql.validation.util.DirectivesAndTypeWalker.isSuitable(DirectivesAndTypeWalker.java:19)
To Reproduce
I have an enum type that is used as non-null input
enum SlotType {
AVAILABLE, UNAVAILABLE
}
type Employee {
schedule(type: SlotType!): [Slot!]!
}
DirectivesAndTypeWalker uses GraphQLTypeUtil.unwrapAll(inputType) since #34 but unwrapAll specifically says that it does not support GraphQLTypeReference:
Unwraps all layers of the type or just returns the type again if it's not a wrapped type NOTE: This method does not support GraphQLTypeReference as input and will lead to a ClassCastException
and SlotType turns out to be one:
type = {GraphQLNonNull@17904} "SlotType!"
originalWrappedType = {GraphQLTypeReference@17955} "GraphQLTypeReference{name='SlotType'}"
name = "SlotType"
replacedWrappedType = null
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