Bump supported fastapi versions (#1110)

* Bump supported fastapi version to <=0.97, change all fastapi tests from starlette client to httpx.AsyncClient

* Add lifecycle manager to fastapi tests

* Fix coverage

* Add python 3.11 to test suite, bump version

tests/test_fastapi/test_fastapi_usage.py

@@ -1,9 +1,11 @@
 from typing import Optional
 
 import databases
+import pytest
 import sqlalchemy
+from asgi_lifespan import LifespanManager
 from fastapi import FastAPI
-from starlette.testclient import TestClient
+from httpx import AsyncClient
 
 import ormar
 from tests.settings import DATABASE_URL
@@ -40,10 +42,11 @@ async def create_item(item: Item):
     return item
 
 
-def test_read_main():
-    client = TestClient(app)
-    with client as client:
-        response = client.post(
+@pytest.mark.asyncio
+async def test_read_main():
+    client = AsyncClient(app=app, base_url="http://testserver")
+    async with client as client, LifespanManager(app):
+        response = await client.post(
             "/items/", json={"name": "test", "id": 1, "category": {"name": "test cat"}}
         )
         assert response.status_code == 200