type Query {
  id: ID!
  field(arg: Int @invalidExample): String
}

# Simple, direct self-reference
directive @invalidExample(arg: String @invalidExample) on ARGUMENT_DEFINITION

# Some more nested self-references
extend scalar String @deprecatedType(reason: "use OurCustomString instead")
directive @deprecatedType(reason: String!) on OBJECT | INTERFACE | ENUM | SCALAR | UNION

directive @loopA(arg: Boolean @loopB) on ARGUMENT_DEFINITION
directive @loopB(arg: Boolean @loopC) on ARGUMENT_DEFINITION
directive @loopC(arg: Boolean @loopA) on ARGUMENT_DEFINITION

enum Enum { NON_RECURSIVE }
extend enum Enum { RECURSIVE @wrong }
input Name { value: String!, type: Enum }
input InputObject { name: Name }
directive @wrong(input: InputObject) on INPUT_FIELD_DEFINITION | ENUM_VALUE

directive @thisOneShouldNotError(arg: Boolean @loopC) on FIELD