Files
xiaobai-review/tests/test_background_lifecycle.py
T

66 lines
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Python

from __future__ import annotations
import ast
import sys
import unittest
from pathlib import Path
from unittest.mock import patch
from backend.bootstrap import runtime
class BackgroundLifecycleTests(unittest.TestCase):
def test_service_construction_does_not_start_the_scheduler(self) -> None:
source = (Path(__file__).parents[1] / "backend" / "application.py").read_text(
encoding="utf-8"
)
tree = ast.parse(source)
service_class = next(
node for node in tree.body
if isinstance(node, ast.ClassDef) and node.name == "DashboardService"
)
constructor = next(
node for node in service_class.body
if isinstance(node, ast.FunctionDef) and node.name == "__init__"
)
called_methods = {
node.func.attr for node in ast.walk(constructor)
if isinstance(node, ast.Call) and isinstance(node.func, ast.Attribute)
}
self.assertNotIn("start_scheduler", called_methods)
def test_runtime_starts_jobs_after_bind_and_stops_before_close(self) -> None:
events: list[str] = []
class Service:
def start_background_jobs(self) -> None:
events.append("start-jobs")
def stop_background_jobs(self) -> None:
events.append("stop-jobs")
class Server:
def __init__(self, address: tuple[str, int], handler: object) -> None:
events.append("bind")
def serve_forever(self) -> None:
events.append("serve")
raise KeyboardInterrupt
def server_close(self) -> None:
events.append("close")
with (
patch.object(runtime, "ThreadingHTTPServer", Server),
patch.object(sys, "argv", ["server.py", "--port", "8797"]),
):
runtime.main(object, Service())
self.assertEqual(
events, ["bind", "start-jobs", "serve", "stop-jobs", "close"]
)
if __name__ == "__main__":
unittest.main()