from contextlib import asynccontextmanager
from unittest.mock import Mock, patch

import pytest
from fastapi import FastAPI

from app.main import app_factory, lifespan, main


@pytest.mark.asyncio
async def test_lifespan() -> None:
    app = FastAPI()
    assert isinstance(lifespan, asynccontextmanager(lifespan).__class__)  # type: ignore[arg-type]

    async with lifespan(app):
        pass


def test_app_factory() -> None:
    app = app_factory()
    assert isinstance(app, FastAPI)
    assert app.router.lifespan_context == lifespan


@patch("app.main.uvicorn.run")
def test_main(mock_uvicorn_run: Mock) -> None:
    main()
    mock_uvicorn_run.assert_called_once_with(
        app_factory,
        factory=True,
        host="0.0.0.0",
        port=8000,
    )