feat(workbench): persist operational workflows and events

tests/unit/test_workbench_event_hub.py

@@ -0,0 +1,32 @@
+import asyncio
+from unittest.mock import AsyncMock
+from uuid import uuid4
+
+import pytest
+
+from app.infra.db.postgresql.workbench_event_hub import WorkbenchEventHub, WorkbenchEventHubManager
+
+
+@pytest.fixture
+def anyio_backend():
+    return "asyncio"
+
+
+@pytest.mark.anyio
+async def test_project_subscribers_share_one_hub_and_idle_close(monkeypatch):
+    start = AsyncMock()
+    close = AsyncMock()
+    monkeypatch.setattr(WorkbenchEventHub, "start", start)
+    monkeypatch.setattr(WorkbenchEventHub, "close", close)
+    manager = WorkbenchEventHubManager(idle_seconds=0.01)
+    project_id = uuid4()
+
+    async with manager.subscribe(project_id, "postgresql://test/db") as first:
+        async with manager.subscribe(project_id, "postgresql://test/db") as second:
+            assert first is second
+            assert first.subscribers == 2
+        assert first.subscribers == 1
+
+    await asyncio.sleep(0.03)
+    assert len(manager._hubs) == 0
+    close.assert_awaited_once()