Files
xiaobaifupan/app/tests/test_http_dispatch.py
T

146 lines
5.9 KiB
Python

from __future__ import annotations
import ast
import unittest
from pathlib import Path
from backend.application import (
AUTHENTICATED_POST_HANDLERS,
PUBLIC_POST_HANDLERS,
RequestHandler,
)
APP_ROOT = Path(__file__).resolve().parents[1]
def class_methods(path: Path, class_name: str) -> set[str]:
tree = ast.parse(path.read_text(encoding="utf-8"), filename=str(path))
owner = next(
node
for node in tree.body
if isinstance(node, ast.ClassDef) and node.name == class_name
)
return {
node.name
for node in owner.body
if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef))
}
class HttpDispatchContractTests(unittest.TestCase):
@staticmethod
def handler(path: str, calls: list[str]) -> RequestHandler:
handler = RequestHandler.__new__(RequestHandler)
handler.path = path
handler.require_auth = lambda: calls.append("auth") or True
handler.require_csrf = lambda: calls.append("csrf") or True
handler.require_access = lambda method, route: (
calls.append(f"access:{method}:{route}") or True
)
return handler
def test_named_handlers_are_real_registered_post_routes(self) -> None:
all_handlers = {**PUBLIC_POST_HANDLERS, **AUTHENTICATED_POST_HANDLERS}
self.assertEqual(
set(PUBLIC_POST_HANDLERS) & set(AUTHENTICATED_POST_HANDLERS), set()
)
for path, handler_name in all_handlers.items():
with self.subTest(path=path):
route = RequestHandler.route_registry.resolve("POST", path)
self.assertIsNotNone(route)
self.assertTrue(callable(getattr(RequestHandler, handler_name)))
expected_access = "public" if path in PUBLIC_POST_HANDLERS else None
if expected_access:
self.assertEqual(route.access, expected_access)
else:
self.assertNotEqual(route.access, "public")
def test_public_post_dispatches_without_authentication(self) -> None:
for path, handler_name in PUBLIC_POST_HANDLERS.items():
with self.subTest(path=path):
calls: list[str] = []
handler = self.handler(path, calls)
handler.require_auth = lambda: (_ for _ in ()).throw(
AssertionError("public route required authentication")
)
setattr(handler, handler_name, lambda: calls.append(handler_name))
RequestHandler.do_POST(handler)
self.assertEqual(calls, [handler_name])
def test_authenticated_post_preserves_guard_order(self) -> None:
for path, handler_name in AUTHENTICATED_POST_HANDLERS.items():
with self.subTest(path=path):
calls: list[str] = []
handler = self.handler(path, calls)
setattr(handler, handler_name, lambda: calls.append(handler_name))
RequestHandler.do_POST(handler)
self.assertEqual(
calls,
["auth", "csrf", f"access:POST:{path}", handler_name],
)
def test_failed_access_never_dispatches_protected_handler(self) -> None:
path, handler_name = next(iter(AUTHENTICATED_POST_HANDLERS.items()))
calls: list[str] = []
handler = self.handler(path, calls)
handler.require_access = lambda method, route: (
calls.append(f"access:{method}:{route}") or False
)
setattr(handler, handler_name, lambda: calls.append(handler_name))
RequestHandler.do_POST(handler)
self.assertEqual(calls, ["auth", "csrf", f"access:POST:{path}"])
def test_application_composition_and_route_ownership_stay_narrow(self) -> None:
application = APP_ROOT / "backend" / "application.py"
dispatch = APP_ROOT / "backend" / "http" / "dispatch.py"
self.assertLessEqual(len(application.read_text(encoding="utf-8").splitlines()), 220)
self.assertLessEqual(len(dispatch.read_text(encoding="utf-8").splitlines()), 150)
self.assertEqual(class_methods(application, "DashboardService"), {"__init__"})
self.assertEqual(class_methods(application, "RequestHandler"), set())
self.assertEqual(
class_methods(dispatch, "ApplicationHttpDispatchMixin"),
{"_dispatch_named_handler", "do_GET", "do_POST", "do_DELETE"},
)
expected_route_owners = {
"accounts", "alerts", "auction", "dragon_tiger", "heaven", "market",
"mentor", "pools", "popularity", "review", "rotation", "screener",
"sentiment", "system", "themes",
}
route_files = {
path.parent.name: path
for path in (APP_ROOT / "backend" / "features").glob("*/routes.py")
}
self.assertEqual(set(route_files), expected_route_owners)
for path in route_files.values():
source = path.read_text(encoding="utf-8")
self.assertLessEqual(len(source.splitlines()), 120, path.name)
self.assertNotIn("backend.application", source)
self.assertNotRegex(source, r"\bSERVICE\b")
def test_application_service_methods_have_single_domain_owners(self) -> None:
owners = (
("features/system/service.py", "SystemServiceMixin", 300),
("features/accounts/application.py", "AccountApplicationMixin", 100),
("jobs/service.py", "JobServiceMixin", 80),
)
claimed: set[str] = set()
for relative, class_name, line_limit in owners:
path = APP_ROOT / "backend" / relative
methods = class_methods(path, class_name)
self.assertTrue(claimed.isdisjoint(methods))
claimed.update(methods)
self.assertLessEqual(len(path.read_text(encoding="utf-8").splitlines()), line_limit)
self.assertEqual(len(claimed), 27)
if __name__ == "__main__":
unittest.main()