fix: bound event stream refresh latency (#58)

tests/test_event_stream.py

@@ -1,3 +1,5 @@
+import asyncio
+import json
 from pathlib import Path
 
 import pytest
@@ -49,6 +51,29 @@ async def test_event_stream_returns_recent_authenticated_gitea_activity(monkeypa
     assert response == expected
 
 
+@pytest.mark.anyio
+async def test_event_stream_returns_retryable_response_when_gitea_exceeds_deadline(monkeypatch):
+    cancelled = asyncio.Event()
+
+    async def hanging_activity_events():
+        try:
+            await asyncio.Event().wait()
+        finally:
+            cancelled.set()
+
+    monkeypatch.setattr(main, "EVENT_STREAM_TIMEOUT_SECONDS", 0.01)
+    monkeypatch.setattr(main, "activity_events", hanging_activity_events)
+
+    response = await main.event_stream()
+
+    assert response.status_code == 503
+    assert response.headers["retry-after"] == "1"
+    assert json.loads(response.body) == {
+        "error": "Gitea event stream request timed out after 0.01s"
+    }
+    assert cancelled.is_set()
+
+
 @pytest.mark.anyio
 async def test_activity_events_fetches_feed_for_authenticated_user(monkeypatch):
     paths = []