Use Hypercorn for republisher serve

tests/test_web.py

@@ -548,6 +548,30 @@ def test_render_stream_uses_view_transition_for_queue_reorders() -> None:
     asyncio.run(run())
 
 
+def test_render_stream_stops_when_shutdown_is_requested() -> None:
+    async def run() -> None:
+        queue = RefreshBroker().subscribe()
+        shutdown_event = asyncio.Event()
+
+        async def render() -> str:
+            return '<main id="morph">queue</main>'
+
+        stream = render_stream(
+            queue,
+            render,
+            render_on_connect=False,
+            shutdown_event=shutdown_event,
+        )
+        next_event = asyncio.create_task(anext(stream))
+        await asyncio.sleep(0)
+        shutdown_event.set()
+
+        with pytest.raises(StopAsyncIteration):
+            await asyncio.wait_for(next_event, timeout=1)
+
+        await stream.aclose()
+
+    asyncio.run(run())
 def test_render_dashboard_shows_dashboard_information_architecture(
     monkeypatch, tmp_path: Path
 ) -> None: