a.out (bundle exec rake test)

false
Int!
true
true
false
Int!
false
ID!
true
Running go vet ./... in /var/folders/7c/qpccms_j3v38zgnhczjy8f5c0000gn/T/d20190430-5777-1tvi8re/queries
.true
.false
ID!
false
Shop!
Running go vet ./... in /var/folders/7c/qpccms_j3v38zgnhczjy8f5c0000gn/T/d20190430-5777-1efdlli/queries
..false
ID!
false
Shop!
.false
ID!
false
Shop!
.false
Int!
false
Int!
true
false
Int!
true
Running go vet ./... in /var/folders/7c/qpccms_j3v38zgnhczjy8f5c0000gn/T/d20190430-5777-bghu7m/queries
.false
ID!
false
Shop!
Running go vet ./... in /var/folders/7c/qpccms_j3v38zgnhczjy8f5c0000gn/T/d20190430-5777-1i92o8j/queries
.false
Int!
true
true
true
true
true
false
Shop!
.true
true
true
true
Running go vet ./... in /var/folders/7c/qpccms_j3v38zgnhczjy8f5c0000gn/T/d20190430-5777-2s3s9w/queries
.false
ID!
false
Shop!
false
ID!
false
Shop!
Running go vet ./... in /var/folders/7c/qpccms_j3v38zgnhczjy8f5c0000gn/T/d20190430-5777-1y5parg/queries
.false
ID!
false
Shop!
.false
Int!
true
true
true
true
true
false
Shop!
Running go vet ./... in /var/folders/7c/qpccms_j3v38zgnhczjy8f5c0000gn/T/d20190430-5777-1fjsqub/queries
.false
Int!
true
true
true
false
String!
true
true
true
true
false
Int!
true
false
Int!
false
Int!
true
false
Int!
true
Running go vet ./... in /var/folders/7c/qpccms_j3v38zgnhczjy8f5c0000gn/T/d20190430-5777-1plp0ce/queries

a.out (cluster-registry)

true
false
ClusterRestrictions!
true
true

schema_structs.rb

      def self.nullable_field_data(gql_type)
        non_null = if gql_type.list?
          child = gql_type.of_type
          if child.list? && !child.non_null?
            child = child.of_type
          end
          child.non_null?
        else
          gql_type.non_null?
        end

        verify(gql_type, non_null)

        {
          nullable: !non_null,
          list: gql_type.list?,
          list_nullable: gql_type.list? && !gql_type.non_null?,
        }
      end

      def self.verify(gql_type, non_nullable)
        non_null =  case gql_type
        when GraphQL::NonNullType
          child_type = gql_type.of_type
          if child_type.list?
            child_type.of_type.non_null?
          else
            child_type.non_null?
          end
        when GraphQL::ListType
          gql_type.of_type.non_null?
        else
          gql_type.non_null?
        end
        puts non_nullable == non_null

        puts gql_type if non_nullable != non_null
      end