fix: handle nullable Gitea issue metadata (#50)

tests/test_context_timeout.py

@@ -1,4 +1,5 @@
 import asyncio
+import json
 
 import pytest
 
@@ -30,4 +31,35 @@ async def test_context_returns_fallback_when_gitea_exceeds_deadline(monkeypatch)
     assert response.headers["retry-after"] == "1"
     assert b'"repos":[]' in response.body
     assert b'"error":"Gitea context request timed out after 0.01s"' in response.body
-    assert cancelled.is_set()
+    assert cancelled.is_set()
+
+
+@pytest.mark.anyio
+async def test_context_normalizes_nullable_issue_collections(monkeypatch):
+    async def user():
+        return {"id": 1, "login": "timmy"}
+
+    async def empty_collection():
+        return []
+
+    async def issue_collection():
+        return [{
+            "id": 50,
+            "number": 50,
+            "title": "Nullable metadata",
+            "state": "open",
+            "labels": None,
+            "assignees": None,
+            "html_url": "https://forge.example/issues/50",
+        }]
+
+    monkeypatch.setattr(main, "current_user", user)
+    monkeypatch.setattr(main, "repos", empty_collection)
+    monkeypatch.setattr(main, "issues", issue_collection)
+    monkeypatch.setattr(main, "pull_requests", empty_collection)
+
+    response = await main.context()
+    issue = json.loads(response.body)["issues"][0]
+
+    assert issue["labels"] == []
+    assert issue["assignees"] == []