from pytest import raises

import graphene
from graphene import relay

schema = graphene.Schema()
relay = schema.relay

class OtherNode(relay.Node):
    name = graphene.StringField()

    @classmethod
    def get_node(cls, id):
        pass


def test_field_no_contributed_raises_error():
    with raises(Exception) as excinfo:
        class Part(relay.Node):
            x = graphene.StringField()

    assert 'get_node' in str(excinfo.value)


def test_node_should_have_connection():
    assert OtherNode.connection


def test_node_should_have_id_field():
    assert 'id' in OtherNode._meta.fields_map


# def test_field_no_contributed_raises_error():
#     with raises(Exception) as excinfo:
#         class Ship(graphene.ObjectType):
#             name = graphene.StringField()
#             class Meta:
#                 schema = schema

#         class Faction(relay.Node):
#             name = graphene.StringField()
#             ships = relay.ConnectionField(Ship)
#             @classmethod
#             def get_node(cls):
#                 pass
#             class Meta:
#                 schema = schema
#     assert 'same type_name' in str(excinfo.value)