import pytest from fastapi import FastAPI, Request, WebSocket, WebSocketDisconnect from fastapi.routing import APIRoute, APIWebSocketRoute from fastapi.testclient import TestClient app = FastAPI() @app.get("/users/{user_id}") async def get_user(user_id: str, request: Request): route: APIRoute = request.scope["route"] return {"user_id": user_id, "path": route.path} @app.websocket("/items/{item_id}") async def websocket_item(item_id: str, websocket: WebSocket): route: APIWebSocketRoute = websocket.scope["route"] await websocket.accept() await websocket.send_json({"item_id": item_id, "path": route.path}) client = TestClient(app) def test_get(): response = client.get("/users/rick") assert response.status_code == 200, response.text assert response.json() == {"user_id": "rick", "path": "/users/{user_id}"} def test_invalid_method_doesnt_match(): response = client.post("/users/rick") assert response.status_code == 405, response.text def test_invalid_path_doesnt_match(): response = client.post("/usersx/rick") assert response.status_code == 404, response.text def test_websocket(): with client.websocket_connect("/items/portal-gun") as websocket: data = websocket.receive_json() assert data == {"item_id": "portal-gun", "path": "/items/{item_id}"} def test_websocket_invalid_path_doesnt_match(): with pytest.raises(WebSocketDisconnect): with client.websocket_connect("/itemsx/portal-gun"): pass