[eric] agents: add browser_dispatch integration test (success + no-dashboard paths)

backend/tests/test_browser_dispatch.py

@@ -0,0 +1,69 @@
+"""Drives the moved browser fast-path dispatch (manager/browser_dispatch.py) end to end
+with a real AgentSession + a mocked browser sub-agent. This path was never directly
+tested before it was lifted out of agent_manager, so this pins its actual behavior."""
+
+import asyncio
+
+import backend.apps.agents.manager.browser_dispatch as bd
+import backend.apps.agents.browser.browser_agent as browser_agent_mod
+from backend.apps.agents.core.models import AgentSession
+
+
+def _patch_io(monkeypatch, dispatch_result, *, has_dashboard=True):
+    sent = []
+    saved = []
+
+    async def fake_send(session_id, event, data):
+        sent.append((event, data))
+
+    def fake_save(session_id, doc):
+        saved.append(session_id)
+
+    async def fake_run(**kwargs):
+        fake_run.calls.append(kwargs)
+        return [dispatch_result]
+    fake_run.calls = []
+
+    monkeypatch.setattr(bd.ws_manager, "send_to_session", fake_send, raising=True)
+    monkeypatch.setattr(bd.ws_manager, "global_connections", [object()] if has_dashboard else [], raising=False)
+    monkeypatch.setattr(bd, "_save_session", fake_save, raising=True)
+    monkeypatch.setattr(browser_agent_mod, "run_browser_agents", fake_run, raising=True)
+    return sent, saved, fake_run
+
+
+def test_fast_path_success_replies_with_the_browser_summary(monkeypatch):
+    sent, saved, fake_run = _patch_io(
+        monkeypatch, {"summary": "Booked the flight to NYC", "done": True, "action_log": []}
+    )
+    session = AgentSession(name="t", model="sonnet", dashboard_id="dash-1")
+    asyncio.run(bd.run_browser_fast_path(
+        session, session.id, "book me a flight to NYC", ["browser-1"], brief="", verdict="act",
+    ))
+
+    roles = [m.role for m in session.messages]
+    assert "tool_call" in roles and "tool_result" in roles  # synthetic Browser Agent bubble
+    assert any(m.role == "assistant" and m.content == "Booked the flight to NYC" for m in session.messages)
+    assert session.status == "completed"
+    assert session.closed_at is not None
+    assert saved  # session snapshot persisted
+    assert any(e == "agent:message" for e, _ in sent)
+    assert any(e == "agent:status" for e, _ in sent)
+    # dispatched to the selected browser, parented to this session
+    assert fake_run.calls and fake_run.calls[0]["pre_selected_browser_ids"] == ["browser-1"]
+    assert fake_run.calls[0]["parent_session_id"] == session.id
+
+
+def test_fast_path_no_dashboard_returns_friendly_reply(monkeypatch):
+    _patch_io(
+        monkeypatch, {"summary": "", "done": False, "action_log": []}, has_dashboard=False,
+    )
+    session = AgentSession(name="t", model="sonnet", dashboard_id="dash-1")
+    asyncio.run(bd.run_browser_fast_path(
+        session, session.id, "go to example.com", ["browser-1"], brief="", verdict="act",
+    ))
+
+    assert any(
+        m.role == "assistant" and "no OpenSwarm window is connected" in str(m.content)
+        for m in session.messages
+    )
+    assert session.status == "completed"