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from typing import NamedTuple
from pytest import mark
from graphql import (
graphql,
GraphQLField,
GraphQLID,
GraphQLNonNull,
GraphQLObjectType,
GraphQLSchema,
GraphQLString,
)
from graphql_relay import node_definitions
class User(NamedTuple):
id: str
name: str
user_data = [User(id="1", name="John Doe"), User(id="2", name="Jane Smith")]
user_type: GraphQLObjectType
node_interface, node_field = node_definitions(
lambda id_, _info: next(filter(lambda obj: obj.id == id_, user_data), None),
lambda _obj, _info, _type: user_type.name,
)[:2]
user_type = GraphQLObjectType(
"User",
lambda: {
"id": GraphQLField(GraphQLNonNull(GraphQLID)),
"name": GraphQLField(GraphQLString),
},
interfaces=[node_interface],
)
query_type = GraphQLObjectType("Query", lambda: {"node": node_field})
schema = GraphQLSchema(query=query_type, types=[user_type])
def describe_node_interface_and_fields_with_async_object_fetcher():
@mark.asyncio
async def gets_the_correct_id_for_users():
source = """
{
node(id: "1") {
id
}
}
"""
assert await graphql(schema, source) == ({"node": {"id": "1"}}, None)
@mark.asyncio
async def gets_the_correct_name_for_users():
source = """
{
node(id: "1") {
id
... on User {
name
}
}
}
"""
assert await graphql(schema, source) == (
{"node": {"id": "1", "name": "John Doe"}},
None,
)
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