Initial commit: habit tracker PWA with Google OAuth, push notifications

FastAPI + SQLAlchemy/Alembic + MariaDB backend with Jinja2/htmx/Alpine
server-rendered frontend. Multi-user via Google OAuth, daily habit
tracking, monthly/weekly history views, Web Push reminders via
APScheduler, and PWA support (manifest, service worker, offline caching).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

tests/test_push_service.py

@@ -0,0 +1,79 @@
+from pywebpush import WebPushException
+
+from app.models.push_subscription import PushSubscription
+from app.schemas.push import PushKeys, PushSubscribeRequest
+from app.services import push_service
+
+
+class _FakeResponse:
+    def __init__(self, status_code):
+        self.status_code = status_code
+
+
+def _subscribe_request(endpoint="https://push.example.com/1"):
+    return PushSubscribeRequest(endpoint=endpoint, keys=PushKeys(p256dh="p256dh-key", auth="auth-key"))
+
+
+# ---- save_subscription ----
+
+
+def test_save_subscription_creates_new_row(db_session, test_user):
+    sub = push_service.save_subscription(db_session, test_user.id, _subscribe_request())
+    assert sub.user_id == test_user.id
+    assert sub.endpoint == "https://push.example.com/1"
+
+
+def test_save_subscription_reassigns_existing_endpoint_to_new_user(db_session, test_user, other_user):
+    request = _subscribe_request()
+    push_service.save_subscription(db_session, other_user.id, request)
+
+    # 같은 기기(endpoint)에서 다른 유저(test_user)로 재구독하면 소유자가 갱신되어야 한다.
+    updated = push_service.save_subscription(db_session, test_user.id, request)
+
+    assert updated.user_id == test_user.id
+    assert db_session.query(PushSubscription).filter_by(endpoint=request.endpoint).count() == 1
+
+
+def test_delete_subscription_removes_row(db_session, test_user):
+    sub = push_service.save_subscription(db_session, test_user.id, _subscribe_request())
+    push_service.delete_subscription(db_session, sub.endpoint)
+    assert db_session.query(PushSubscription).filter_by(endpoint=sub.endpoint).count() == 0
+
+
+# ---- send_to_user ----
+
+
+def test_send_to_user_counts_successful_sends(db_session, test_user, monkeypatch):
+    push_service.save_subscription(db_session, test_user.id, _subscribe_request("https://push.example.com/a"))
+    push_service.save_subscription(db_session, test_user.id, _subscribe_request("https://push.example.com/b"))
+
+    monkeypatch.setattr(push_service, "webpush", lambda **kwargs: None)
+
+    sent = push_service.send_to_user(db_session, test_user.id, title="제목", body="본문")
+    assert sent == 2
+
+
+def test_send_to_user_deletes_expired_subscription_on_410(db_session, test_user, monkeypatch):
+    sub = push_service.save_subscription(db_session, test_user.id, _subscribe_request())
+
+    def _raise_gone(**kwargs):
+        raise WebPushException("gone", response=_FakeResponse(410))
+
+    monkeypatch.setattr(push_service, "webpush", _raise_gone)
+
+    sent = push_service.send_to_user(db_session, test_user.id, title="제목", body="본문")
+    assert sent == 0
+    assert db_session.query(PushSubscription).filter_by(id=sub.id).count() == 0
+
+
+def test_send_to_user_keeps_subscription_on_other_errors(db_session, test_user, monkeypatch):
+    sub = push_service.save_subscription(db_session, test_user.id, _subscribe_request())
+
+    def _raise_server_error(**kwargs):
+        raise WebPushException("server error", response=_FakeResponse(500))
+
+    monkeypatch.setattr(push_service, "webpush", _raise_server_error)
+
+    sent = push_service.send_to_user(db_session, test_user.id, title="제목", body="본문")
+    assert sent == 0
+    assert db_session.query(PushSubscription).filter_by(id=sub.id).count() == 1