from fastapi import Depends, FastAPI, Security from fastapi.testclient import TestClient app = FastAPI() counter_holder = {"counter": 0} async def dep_counter(): counter_holder["counter"] += 1 return counter_holder["counter"] async def super_dep(count: int = Depends(dep_counter)): return count @app.get("/counter/") async def get_counter(count: int = Depends(dep_counter)): return {"counter": count} @app.get("/sub-counter/") async def get_sub_counter( subcount: int = Depends(super_dep), count: int = Depends(dep_counter) ): return {"counter": count, "subcounter": subcount} @app.get("/sub-counter-no-cache/") async def get_sub_counter_no_cache( subcount: int = Depends(super_dep), count: int = Depends(dep_counter, use_cache=False), ): return {"counter": count, "subcounter": subcount} @app.get("/scope-counter") async def get_scope_counter( count: int = Security(dep_counter), scope_count_1: int = Security(dep_counter, scopes=["scope"]), scope_count_2: int = Security(dep_counter, scopes=["scope"]), ): return { "counter": count, "scope_counter_1": scope_count_1, "scope_counter_2": scope_count_2, } client = TestClient(app) def test_normal_counter(): counter_holder["counter"] = 0 response = client.get("/counter/") assert response.status_code == 200, response.text assert response.json() == {"counter": 1} response = client.get("/counter/") assert response.status_code == 200, response.text assert response.json() == {"counter": 2} def test_sub_counter(): counter_holder["counter"] = 0 response = client.get("/sub-counter/") assert response.status_code == 200, response.text assert response.json() == {"counter": 1, "subcounter": 1} response = client.get("/sub-counter/") assert response.status_code == 200, response.text assert response.json() == {"counter": 2, "subcounter": 2} def test_sub_counter_no_cache(): counter_holder["counter"] = 0 response = client.get("/sub-counter-no-cache/") assert response.status_code == 200, response.text assert response.json() == {"counter": 2, "subcounter": 1} response = client.get("/sub-counter-no-cache/") assert response.status_code == 200, response.text assert response.json() == {"counter": 4, "subcounter": 3} def test_security_cache(): counter_holder["counter"] = 0 response = client.get("/scope-counter/") assert response.status_code == 200, response.text assert response.json() == {"counter": 1, "scope_counter_1": 2, "scope_counter_2": 2} response = client.get("/scope-counter/") assert response.status_code == 200, response.text assert response.json() == {"counter": 3, "scope_counter_1": 4, "scope_counter_2": 4}