674 lines
22 KiB
Python
674 lines
22 KiB
Python
"""Unit tests for PLAN_EXEC wiring at chat.py WebSocket path (G6, U4).
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Per plan U4 Execution note: characterization-first — verify that existing
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REWOO/REFLEXION/TEAM_COLLAB modes still fall back to REACT with the warning
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(no regression). Then add PLAN_EXEC wiring tests.
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KTD4: PLAN_EXEC is wired only at the WebSocket path; REST raises HTTP 501.
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"""
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from __future__ import annotations
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from unittest.mock import AsyncMock, MagicMock
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import pytest
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from fastapi.testclient import TestClient
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from agentkit.chat.skill_routing import ExecutionMode, SkillRoutingResult
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from agentkit.core.phase import PhaseState
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from agentkit.tools.advance_phase import AdvancePhaseTool
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# ---------------------------------------------------------------------------
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# Fixtures
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# ---------------------------------------------------------------------------
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@pytest.fixture
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def app_with_chat():
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"""Create a FastAPI app with Chat routes and mocked dependencies."""
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from fastapi import FastAPI
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from agentkit.server.routes.chat import router
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app = FastAPI()
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app.include_router(router, prefix="/api/v1")
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from agentkit.session.manager import SessionManager
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from agentkit.session.store import InMemorySessionStore
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app.state.session_manager = SessionManager(store=InMemorySessionStore())
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app.state.llm_gateway = MagicMock()
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app.state.agent_pool = MagicMock()
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app.state.server_config = MagicMock()
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app.state.server_config.api_key = None
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app.state.server_config.plan_exec = {}
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return app
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@pytest.fixture
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def client(app_with_chat):
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return TestClient(app_with_chat)
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def _make_routing(
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execution_mode: ExecutionMode = ExecutionMode.REACT,
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tools: list | None = None,
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) -> SkillRoutingResult:
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"""Build a minimal SkillRoutingResult for testing."""
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return SkillRoutingResult(
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execution_mode=execution_mode,
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tools=tools or [],
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clean_content="test message",
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model="default",
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agent_name="test-agent",
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system_prompt=None,
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skill_name=None,
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)
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def _make_websocket_mock(app) -> MagicMock:
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"""Build a mock WebSocket with app.state and async send_json."""
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ws = MagicMock()
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ws.app = app
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ws.send_json = AsyncMock()
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return ws
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def _make_agent_mock() -> MagicMock:
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"""Build a mock Agent with _tool_registry and _react_engine."""
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agent = MagicMock()
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agent.name = "test-agent"
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agent._tool_registry = MagicMock()
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agent._tool_registry.list_tools.return_value = []
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agent._system_prompt = None
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# _react_engine is None to force the code path that creates a new engine
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agent._react_engine = None
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agent.get_model.return_value = "default"
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return agent
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def _make_session_manager_mock() -> MagicMock:
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"""Build a mock SessionManager with async methods."""
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sm = MagicMock()
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# get_session returns a mock session with agent_name="test-agent"
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session = MagicMock()
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session.agent_name = "test-agent"
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session.status = "active"
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sm.get_session = AsyncMock(return_value=session)
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sm.get_chat_messages = AsyncMock(return_value=[])
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sm.append_message = AsyncMock()
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return sm
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def _setup_routing(app, routing: SkillRoutingResult, agent: MagicMock) -> None:
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"""Wire up app.state so _handle_chat_message finds the right routing."""
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app.state.agent_pool.get_agent.return_value = agent
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app.state.request_preprocessor = MagicMock()
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app.state.request_preprocessor.preprocess = AsyncMock(return_value=routing)
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# ---------------------------------------------------------------------------
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# REST — PLAN_EXEC raises 501 (KTD4)
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# ---------------------------------------------------------------------------
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class TestRestPlanExec501:
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def test_rest_plan_exec_returns_501(self, client):
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"""REST send_message with execution_mode=plan_exec → 501."""
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create_resp = client.post("/api/v1/chat/sessions", json={"agent_name": "test-agent"})
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session_id = create_resp.json()["session_id"]
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msg_resp = client.post(
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f"/api/v1/chat/sessions/{session_id}/messages",
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json={"content": "Hello", "execution_mode": "plan_exec"},
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)
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assert msg_resp.status_code == 501
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assert "PLAN_EXEC via REST not yet supported" in msg_resp.json()["detail"]
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def test_rest_react_mode_still_works(self, client):
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"""REST send_message without execution_mode doesn't 501."""
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create_resp = client.post("/api/v1/chat/sessions", json={"agent_name": "test-agent"})
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session_id = create_resp.json()["session_id"]
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# No execution_mode field → should NOT trigger 501.
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msg_resp = client.post(
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f"/api/v1/chat/sessions/{session_id}/messages",
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json={"content": "Hello"},
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)
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assert msg_resp.status_code != 501
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# ---------------------------------------------------------------------------
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# Characterization — REWOO still falls back to REACT (no regression)
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# ---------------------------------------------------------------------------
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@pytest.mark.asyncio
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async def test_rewoo_still_falls_back_to_react_without_phase_policy(app_with_chat):
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"""Characterization: REWOO via WebSocket → no phase_policy (falls back to REACT)."""
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from agentkit.server.routes import chat as chat_module
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agent = _make_agent_mock()
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routing = _make_routing(execution_mode=ExecutionMode.REWOO)
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_setup_routing(app_with_chat, routing, agent)
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sm = _make_session_manager_mock()
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ws = _make_websocket_mock(app_with_chat)
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captured_engine_kwargs: dict = {}
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class _StubEngine:
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def __init__(self, **kwargs):
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captured_engine_kwargs.update(kwargs)
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self._phase_policy = kwargs.get("phase_policy")
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self._current_phase = None
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@property
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def current_phase(self):
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return self._current_phase
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def reset(self):
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pass
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async def execute_stream(self, **kwargs):
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return
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yield # async generator marker
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with pytest.MonkeyPatch().context() as mp:
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mp.setattr(chat_module, "ReActEngine", _StubEngine)
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await chat_module._handle_chat_message(
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websocket=ws,
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session_id="test-session",
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content="test",
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sm=sm,
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cancellation_token=MagicMock(),
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pending_replies={},
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pending_confirmations=None,
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)
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# REWOO should NOT build a phase_policy
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assert captured_engine_kwargs.get("phase_policy") is None
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# ---------------------------------------------------------------------------
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# Happy path — PLAN_EXEC builds phase policy + registers AdvancePhaseTool
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# ---------------------------------------------------------------------------
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@pytest.mark.asyncio
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async def test_plan_exec_builds_phase_policy_and_registers_advance_phase_tool(
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app_with_chat,
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):
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"""PLAN_EXEC via WebSocket → engine with phase_policy, AdvancePhaseTool registered."""
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from agentkit.server.routes import chat as chat_module
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agent = _make_agent_mock()
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routing = _make_routing(execution_mode=ExecutionMode.PLAN_EXEC)
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_setup_routing(app_with_chat, routing, agent)
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sm = _make_session_manager_mock()
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sm.get_chat_messages = AsyncMock(return_value=[{"role": "user", "content": "test"}])
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ws = _make_websocket_mock(app_with_chat)
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captured_engine: list = []
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captured_tools: list = []
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class _StubEngine:
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def __init__(self, **kwargs):
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self._phase_policy = kwargs.get("phase_policy")
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self._current_phase = (
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kwargs.get("phase_policy").start_phase if kwargs.get("phase_policy") else None
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)
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@property
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def current_phase(self):
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return self._current_phase
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def reset(self):
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pass
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async def execute_stream(self, **kwargs):
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captured_tools.extend(kwargs.get("tools", []))
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captured_engine.append(self)
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return
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yield
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with pytest.MonkeyPatch().context() as mp:
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mp.setattr(chat_module, "ReActEngine", _StubEngine)
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await chat_module._handle_chat_message(
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websocket=ws,
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session_id="test-session",
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content="test",
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sm=sm,
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cancellation_token=MagicMock(),
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pending_replies={},
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pending_confirmations=None,
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)
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assert len(captured_engine) == 1
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engine = captured_engine[0]
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assert engine._phase_policy is not None
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assert engine._current_phase == PhaseState.PLANNING
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# AdvancePhaseTool was registered in the tools list
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assert any(isinstance(t, AdvancePhaseTool) for t in captured_tools)
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# ---------------------------------------------------------------------------
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# Edge cases
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# ---------------------------------------------------------------------------
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@pytest.mark.asyncio
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async def test_plan_exec_empty_config_uses_default_policy(app_with_chat):
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"""Edge: plan_exec config absent (empty dict) → default_policy() used."""
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from agentkit.server.routes import chat as chat_module
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app_with_chat.state.server_config.plan_exec = {}
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agent = _make_agent_mock()
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routing = _make_routing(execution_mode=ExecutionMode.PLAN_EXEC)
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_setup_routing(app_with_chat, routing, agent)
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sm = _make_session_manager_mock()
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ws = _make_websocket_mock(app_with_chat)
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captured_policy: list = []
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class _StubEngine:
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def __init__(self, **kwargs):
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captured_policy.append(kwargs.get("phase_policy"))
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self._phase_policy = kwargs.get("phase_policy")
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self._current_phase = (
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kwargs.get("phase_policy").start_phase if kwargs.get("phase_policy") else None
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)
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@property
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def current_phase(self):
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return self._current_phase
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def reset(self):
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pass
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async def execute_stream(self, **kwargs):
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return
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yield
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with pytest.MonkeyPatch().context() as mp:
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mp.setattr(chat_module, "ReActEngine", _StubEngine)
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await chat_module._handle_chat_message(
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websocket=ws,
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session_id="test-session",
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content="test",
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sm=sm,
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cancellation_token=MagicMock(),
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pending_replies={},
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pending_confirmations=None,
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)
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assert len(captured_policy) == 1
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assert captured_policy[0] is not None
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# Default policy: PLANNING allows search but not write_file
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assert "search" in captured_policy[0].whitelist[PhaseState.PLANNING]
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assert "write_file" not in captured_policy[0].whitelist[PhaseState.PLANNING]
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@pytest.mark.asyncio
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async def test_plan_exec_disabled_falls_back_to_react(app_with_chat):
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"""Edge: plan_exec.enabled=False → falls back to REACT (no phase_policy)."""
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from agentkit.server.routes import chat as chat_module
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app_with_chat.state.server_config.plan_exec = {"enabled": False}
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agent = _make_agent_mock()
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routing = _make_routing(execution_mode=ExecutionMode.PLAN_EXEC)
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_setup_routing(app_with_chat, routing, agent)
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sm = _make_session_manager_mock()
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ws = _make_websocket_mock(app_with_chat)
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captured_engine_kwargs: dict = {}
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class _StubEngine:
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def __init__(self, **kwargs):
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captured_engine_kwargs.update(kwargs)
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self._phase_policy = kwargs.get("phase_policy")
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self._current_phase = None
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@property
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def current_phase(self):
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return self._current_phase
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def reset(self):
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pass
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async def execute_stream(self, **kwargs):
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return
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yield
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with pytest.MonkeyPatch().context() as mp:
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mp.setattr(chat_module, "ReActEngine", _StubEngine)
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await chat_module._handle_chat_message(
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websocket=ws,
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session_id="test-session",
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content="test",
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sm=sm,
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cancellation_token=MagicMock(),
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pending_replies={},
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pending_confirmations=None,
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)
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# enabled=False → no phase_policy (falls back to REACT)
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assert captured_engine_kwargs.get("phase_policy") is None
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# ---------------------------------------------------------------------------
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# Error path
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# ---------------------------------------------------------------------------
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@pytest.mark.asyncio
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async def test_plan_exec_bad_config_sends_error_and_returns(app_with_chat):
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"""Error: phase policy construction fails → error event sent, returns early."""
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from agentkit.server.routes import chat as chat_module
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app_with_chat.state.server_config.plan_exec = {"start_phase": "invalid_phase_name"}
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agent = _make_agent_mock()
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routing = _make_routing(execution_mode=ExecutionMode.PLAN_EXEC)
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_setup_routing(app_with_chat, routing, agent)
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sm = _make_session_manager_mock()
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ws = _make_websocket_mock(app_with_chat)
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engine_constructor_called = []
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class _StubEngine:
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def __init__(self, **kwargs):
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engine_constructor_called.append(kwargs)
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async def execute_stream(self, **kwargs):
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yield
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with pytest.MonkeyPatch().context() as mp:
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mp.setattr(chat_module, "ReActEngine", _StubEngine)
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await chat_module._handle_chat_message(
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websocket=ws,
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session_id="test-session",
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content="test",
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sm=sm,
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cancellation_token=MagicMock(),
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pending_replies={},
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pending_confirmations=None,
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)
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sent_messages = [call.args[0] for call in ws.send_json.call_args_list]
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error_messages = [m for m in sent_messages if m.get("type") == "error"]
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assert len(error_messages) == 1
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assert "phase policy error" in error_messages[0]["data"]["message"]
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# Engine constructor was NOT called (returned early)
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assert len(engine_constructor_called) == 0
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# ---------------------------------------------------------------------------
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# phase_changed event emission
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# ---------------------------------------------------------------------------
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@pytest.mark.asyncio
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async def test_phase_changed_event_emitted_on_transition(app_with_chat):
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"""phase_changed event sent when current_phase changes during execute_stream."""
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from agentkit.server.routes import chat as chat_module
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app_with_chat.state.server_config.plan_exec = {}
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agent = _make_agent_mock()
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routing = _make_routing(execution_mode=ExecutionMode.PLAN_EXEC)
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_setup_routing(app_with_chat, routing, agent)
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sm = _make_session_manager_mock()
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sm.get_chat_messages = AsyncMock(return_value=[{"role": "user", "content": "go"}])
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ws = _make_websocket_mock(app_with_chat)
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class _StubEngine:
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def __init__(self, **kwargs):
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self._phase_policy = kwargs.get("phase_policy")
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self._current_phase = PhaseState.PLANNING
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@property
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def current_phase(self):
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return self._current_phase
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def reset(self):
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pass
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async def execute_stream(self, **kwargs):
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from agentkit.core.react import ReActEvent
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yield ReActEvent(
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event_type="tool_call",
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step=1,
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data={"tool": "search", "output": "ok"},
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)
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# Simulate phase transition (as if AdvancePhaseTool was called)
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self._current_phase = PhaseState.BUILDING
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yield ReActEvent(
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event_type="final_answer",
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step=2,
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data={"output": "done"},
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)
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with pytest.MonkeyPatch().context() as mp:
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mp.setattr(chat_module, "ReActEngine", _StubEngine)
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await chat_module._handle_chat_message(
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websocket=ws,
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session_id="test-session",
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content="go",
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sm=sm,
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cancellation_token=MagicMock(),
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pending_replies={},
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pending_confirmations=None,
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)
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sent_messages = [call.args[0] for call in ws.send_json.call_args_list]
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phase_events = [m for m in sent_messages if m.get("type") == "phase_changed"]
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assert len(phase_events) == 1
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assert phase_events[0]["data"]["phase"] == "building"
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assert phase_events[0]["data"]["previous"] == "planning"
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@pytest.mark.asyncio
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async def test_no_phase_changed_event_when_not_plan_exec(app_with_chat):
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"""Characterization: REACT mode → no phase_changed events."""
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from agentkit.server.routes import chat as chat_module
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agent = _make_agent_mock()
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routing = _make_routing(execution_mode=ExecutionMode.REACT)
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_setup_routing(app_with_chat, routing, agent)
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sm = _make_session_manager_mock()
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sm.get_chat_messages = AsyncMock(return_value=[{"role": "user", "content": "hi"}])
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ws = _make_websocket_mock(app_with_chat)
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class _StubEngine:
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def __init__(self, **kwargs):
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self._phase_policy = None
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self._current_phase = None
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@property
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def current_phase(self):
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return None
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def reset(self):
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pass
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async def execute_stream(self, **kwargs):
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from agentkit.core.react import ReActEvent
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yield ReActEvent(event_type="final_answer", step=1, data={"output": "hi"})
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with pytest.MonkeyPatch().context() as mp:
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mp.setattr(chat_module, "ReActEngine", _StubEngine)
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await chat_module._handle_chat_message(
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websocket=ws,
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session_id="test-session",
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content="hi",
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sm=sm,
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cancellation_token=MagicMock(),
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pending_replies={},
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pending_confirmations=None,
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)
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sent_messages = [call.args[0] for call in ws.send_json.call_args_list]
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phase_events = [m for m in sent_messages if m.get("type") == "phase_changed"]
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assert len(phase_events) == 0
|
|
|
|
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# ---------------------------------------------------------------------------
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# Wave 4 U2 — phase_violation event forwarding
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# ---------------------------------------------------------------------------
|
|
|
|
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@pytest.mark.asyncio
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async def test_phase_violation_event_forwarded_to_client(app_with_chat):
|
|
"""When ReActEngine yields a phase_violation ReActEvent, chat.py WS handler
|
|
must forward it as a `{"type": "phase_violation", "data": ...}` WS message
|
|
so the frontend PhaseIndicator can react."""
|
|
from agentkit.server.routes import chat as chat_module
|
|
|
|
app_with_chat.state.server_config.plan_exec = {}
|
|
|
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agent = _make_agent_mock()
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|
routing = _make_routing(execution_mode=ExecutionMode.PLAN_EXEC)
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|
_setup_routing(app_with_chat, routing, agent)
|
|
|
|
sm = _make_session_manager_mock()
|
|
sm.get_chat_messages = AsyncMock(return_value=[{"role": "user", "content": "go"}])
|
|
ws = _make_websocket_mock(app_with_chat)
|
|
|
|
class _StubEngine:
|
|
def __init__(self, **kwargs):
|
|
self._phase_policy = kwargs.get("phase_policy")
|
|
self._current_phase = PhaseState.PLANNING
|
|
|
|
@property
|
|
def current_phase(self):
|
|
return self._current_phase
|
|
|
|
def reset(self):
|
|
pass
|
|
|
|
async def execute_stream(self, **kwargs):
|
|
from agentkit.core.react import ReActEvent
|
|
|
|
# Simulate: tool_call → tool_result (blocked) → phase_violation
|
|
yield ReActEvent(
|
|
event_type="tool_call",
|
|
step=1,
|
|
data={"tool_name": "write_file", "arguments": {"path": "/x"}},
|
|
)
|
|
yield ReActEvent(
|
|
event_type="tool_result",
|
|
step=1,
|
|
data={
|
|
"tool_name": "write_file",
|
|
"result": {"error": "phase_violation", "is_error": True},
|
|
},
|
|
)
|
|
yield ReActEvent(
|
|
event_type="phase_violation",
|
|
step=1,
|
|
data={
|
|
"error": "phase_violation",
|
|
"message": "Tool 'write_file' not allowed in planning phase.",
|
|
"current_phase": "planning",
|
|
"tool": "write_file",
|
|
"is_error": True,
|
|
"violation_kind": "tool_not_allowed",
|
|
},
|
|
)
|
|
yield ReActEvent(
|
|
event_type="final_answer",
|
|
step=2,
|
|
data={"output": "done"},
|
|
)
|
|
|
|
with pytest.MonkeyPatch().context() as mp:
|
|
mp.setattr(chat_module, "ReActEngine", _StubEngine)
|
|
|
|
await chat_module._handle_chat_message(
|
|
websocket=ws,
|
|
session_id="test-session",
|
|
content="go",
|
|
sm=sm,
|
|
cancellation_token=MagicMock(),
|
|
pending_replies={},
|
|
pending_confirmations=None,
|
|
)
|
|
|
|
sent_messages = [call.args[0] for call in ws.send_json.call_args_list]
|
|
violation_messages = [m for m in sent_messages if m.get("type") == "phase_violation"]
|
|
assert len(violation_messages) == 1
|
|
v = violation_messages[0]["data"]
|
|
assert v["error"] == "phase_violation"
|
|
assert v["tool"] == "write_file"
|
|
assert v["current_phase"] == "planning"
|
|
assert v["violation_kind"] == "tool_not_allowed"
|
|
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_no_phase_violation_event_when_not_plan_exec(app_with_chat):
|
|
"""Characterization: REACT mode → no phase_violation events forwarded
|
|
(the engine never yields them without a phase_policy)."""
|
|
from agentkit.server.routes import chat as chat_module
|
|
|
|
agent = _make_agent_mock()
|
|
routing = _make_routing(execution_mode=ExecutionMode.REACT)
|
|
_setup_routing(app_with_chat, routing, agent)
|
|
|
|
sm = _make_session_manager_mock()
|
|
sm.get_chat_messages = AsyncMock(return_value=[{"role": "user", "content": "hi"}])
|
|
ws = _make_websocket_mock(app_with_chat)
|
|
|
|
class _StubEngine:
|
|
def __init__(self, **kwargs):
|
|
self._phase_policy = None
|
|
self._current_phase = None
|
|
|
|
@property
|
|
def current_phase(self):
|
|
return None
|
|
|
|
def reset(self):
|
|
pass
|
|
|
|
async def execute_stream(self, **kwargs):
|
|
from agentkit.core.react import ReActEvent
|
|
|
|
# REACT mode: no phase_violation events yielded.
|
|
yield ReActEvent(event_type="final_answer", step=1, data={"output": "hi"})
|
|
|
|
with pytest.MonkeyPatch().context() as mp:
|
|
mp.setattr(chat_module, "ReActEngine", _StubEngine)
|
|
|
|
await chat_module._handle_chat_message(
|
|
websocket=ws,
|
|
session_id="test-session",
|
|
content="hi",
|
|
sm=sm,
|
|
cancellation_token=MagicMock(),
|
|
pending_replies={},
|
|
pending_confirmations=None,
|
|
)
|
|
|
|
sent_messages = [call.args[0] for call in ws.send_json.call_args_list]
|
|
violation_messages = [m for m in sent_messages if m.get("type") == "phase_violation"]
|
|
assert len(violation_messages) == 0
|