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import asyncio
from typing import AsyncIterable
import graphql
from graphql import print_schema
from apischema.graphql import graphql_schema
def hello() -> str:
return "world"
async def events() -> AsyncIterable[str]:
yield "bonjour"
yield "au revoir"
schema = graphql_schema(query=[hello], subscription=[events])
schema_str = """\
type Query {
hello: String!
}
type Subscription {
events: String!
}"""
assert print_schema(schema) == schema_str
async def test():
subscription = await graphql.subscribe(
schema, graphql.parse("subscription {events}")
)
assert [event.data async for event in subscription] == [
{"events": "bonjour"},
{"events": "au revoir"},
]
asyncio.run(test())
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