graphene/tests_asyncio/test_subscribe.py

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from pytest import mark
from graphene import ObjectType, Int, String, Schema, Field
class Query(ObjectType):
hello = String()
def resolve_hello(root, info):
return "Hello, world!"
class Subscription(ObjectType):
count_to_ten = Field(Int)
async def subscribe_count_to_ten(root, info):
count = 0
while count < 10:
count += 1
yield {"count_to_ten": count}
schema = Schema(query=Query, subscription=Subscription)
@mark.asyncio
async def test_subscription():
subscription = "subscription { countToTen }"
result = await schema.subscribe(subscription)
count = 0
async for item in result:
count = item.data["countToTen"]
assert count == 10