404 lines
14 KiB
Python
404 lines
14 KiB
Python
"""WebSocket endpoint unit tests - U7 Phase 4
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Covers:
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- Connection and authentication
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- Receiving step events
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- Cancel message
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- Task completion auto-close
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- Unauthenticated connection rejection
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- Multiple clients subscribing to same task
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- ConnectionManager
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"""
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import json
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from unittest.mock import AsyncMock, MagicMock, patch
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import pytest
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from agentkit.core.protocol import CancellationToken
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from agentkit.llm.protocol import LLMResponse, TokenUsage
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# ── Helpers ──────────────────────────────────────────────
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def _make_app(api_key: str | None = None):
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"""Create a test app with a pre-registered agent."""
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from agentkit.server.app import create_app
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from agentkit.llm.gateway import LLMGateway
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from agentkit.skills.registry import SkillRegistry
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from agentkit.tools.registry import ToolRegistry
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gateway = LLMGateway()
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mock_provider = AsyncMock()
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mock_provider.chat.return_value = LLMResponse(
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content="Final answer",
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model="test-model",
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usage=TokenUsage(prompt_tokens=10, completion_tokens=20),
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)
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gateway.register_provider("test", mock_provider)
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skill_registry = SkillRegistry()
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tool_registry = ToolRegistry()
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kwargs = dict(
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llm_gateway=gateway,
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skill_registry=skill_registry,
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tool_registry=tool_registry,
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)
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if api_key:
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kwargs["api_key"] = api_key
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app = create_app(**kwargs)
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# Register an agent so _resolve_agent can find one
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from fastapi.testclient import TestClient
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client = TestClient(app)
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client.post(
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"/api/v1/agents",
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json={
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"config": {
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"name": "ws_agent",
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"agent_type": "test",
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"task_mode": "llm_generate",
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"prompt": {"identity": "WS Agent"},
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}
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},
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)
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return app
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# ══════════════════════════════════════════════════════════
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# ConnectionManager unit tests
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# ══════════════════════════════════════════════════════════
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class TestConnectionManager:
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"""ConnectionManager core logic tests."""
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def test_add_and_has_connections(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws = MagicMock()
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token = CancellationToken()
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mgr.add("task-1", ws, token)
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assert mgr.has_connections("task-1") is True
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assert mgr.has_connections("task-2") is False
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def test_remove_connection(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws = MagicMock()
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token = CancellationToken()
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mgr.add("task-1", ws, token)
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mgr.remove("task-1", ws)
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assert mgr.has_connections("task-1") is False
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def test_multiple_clients_same_task(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws1 = MagicMock()
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ws2 = MagicMock()
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token1 = CancellationToken()
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token2 = CancellationToken()
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mgr.add("task-1", ws1, token1)
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mgr.add("task-1", ws2, token2)
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assert mgr.has_connections("task-1") is True
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tokens = mgr.get_tokens("task-1")
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assert len(tokens) == 2
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def test_remove_one_of_multiple(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws1 = MagicMock()
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ws2 = MagicMock()
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token1 = CancellationToken()
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token2 = CancellationToken()
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mgr.add("task-1", ws1, token1)
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mgr.add("task-1", ws2, token2)
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mgr.remove("task-1", ws1)
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assert mgr.has_connections("task-1") is True
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tokens = mgr.get_tokens("task-1")
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assert len(tokens) == 1
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async def test_broadcast_sends_to_all(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws1 = AsyncMock()
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ws2 = AsyncMock()
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token1 = CancellationToken()
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token2 = CancellationToken()
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mgr.add("task-1", ws1, token1)
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mgr.add("task-1", ws2, token2)
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msg = {"type": "step", "data": {"event_type": "thinking"}}
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await mgr.broadcast("task-1", msg)
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ws1.send_json.assert_awaited_once_with(msg)
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ws2.send_json.assert_awaited_once_with(msg)
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async def test_broadcast_removes_stale(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws_ok = AsyncMock()
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ws_stale = AsyncMock()
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ws_stale.send_json.side_effect = Exception("disconnected")
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mgr.add("task-1", ws_ok, CancellationToken())
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mgr.add("task-1", ws_stale, CancellationToken())
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await mgr.broadcast("task-1", {"type": "step", "data": {}})
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# Stale connection should be removed
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assert mgr.has_connections("task-1") is True
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tokens = mgr.get_tokens("task-1")
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assert len(tokens) == 1
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# ══════════════════════════════════════════════════════════
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# Authentication tests
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# ══════════════════════════════════════════════════════════
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class TestWSAuthentication:
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"""WebSocket authentication tests."""
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def test_dev_mode_no_api_key_allows_connection(self):
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from fastapi.testclient import TestClient
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app = _make_app(api_key=None)
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client = TestClient(app)
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with client.websocket_connect("/api/v1/ws/tasks/test-task-1") as ws:
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msg = ws.receive_json()
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assert msg["type"] == "connected"
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assert msg["task_id"] == "test-task-1"
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def test_valid_api_key_allows_connection(self):
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from fastapi.testclient import TestClient
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app = _make_app(api_key="secret123")
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client = TestClient(app)
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with client.websocket_connect(
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"/api/v1/ws/tasks/test-task-2?api_key=secret123"
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) as ws:
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msg = ws.receive_json()
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assert msg["type"] == "connected"
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def test_missing_api_key_rejects_connection(self):
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from fastapi.testclient import TestClient
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app = _make_app(api_key="secret123")
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client = TestClient(app)
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with client.websocket_connect("/api/v1/ws/tasks/test-task-3") as ws:
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msg = ws.receive_json()
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assert msg["type"] == "error"
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assert "api_key" in msg["data"]["message"].lower()
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def test_wrong_api_key_rejects_connection(self):
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from fastapi.testclient import TestClient
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app = _make_app(api_key="secret123")
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client = TestClient(app)
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with client.websocket_connect(
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"/api/v1/ws/tasks/test-task-4?api_key=wrong"
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) as ws:
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msg = ws.receive_json()
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assert msg["type"] == "error"
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assert "api_key" in msg["data"]["message"].lower()
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# ══════════════════════════════════════════════════════════
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# Step events and result tests
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# ══════════════════════════════════════════════════════════
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class TestWSStepEvents:
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"""Test receiving ReAct step events via WebSocket."""
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def test_receives_connected_then_step_then_result(self):
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from fastapi.testclient import TestClient
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app = _make_app(api_key=None)
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client = TestClient(app)
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with client.websocket_connect("/api/v1/ws/tasks/ws-step-1") as ws:
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# First message is always "connected"
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msg = ws.receive_json()
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assert msg["type"] == "connected"
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assert msg["task_id"] == "ws-step-1"
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# Then we should get step events and eventually a result
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messages = []
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for _ in range(20):
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try:
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msg = ws.receive_json(mode="text")
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msg = json.loads(msg) if isinstance(msg, str) else msg
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messages.append(msg)
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if msg.get("type") == "result":
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break
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except Exception:
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break
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# Should have at least one step and a result
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step_msgs = [m for m in messages if m.get("type") == "step"]
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result_msgs = [m for m in messages if m.get("type") == "result"]
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assert len(step_msgs) >= 1, f"Expected step messages, got: {messages}"
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assert len(result_msgs) >= 1, f"Expected result message, got: {messages}"
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def test_step_event_has_required_fields(self):
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from fastapi.testclient import TestClient
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app = _make_app(api_key=None)
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client = TestClient(app)
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with client.websocket_connect("/api/v1/ws/tasks/ws-step-2") as ws:
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# Skip connected
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ws.receive_json()
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messages = []
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for _ in range(20):
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try:
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msg = ws.receive_json(mode="text")
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msg = json.loads(msg) if isinstance(msg, str) else msg
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messages.append(msg)
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if msg.get("type") == "result":
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break
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except Exception:
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break
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step_msgs = [m for m in messages if m.get("type") == "step"]
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if step_msgs:
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step = step_msgs[0]
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assert "data" in step
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assert "event_type" in step["data"]
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assert "step" in step["data"]
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# ══════════════════════════════════════════════════════════
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# Cancel message tests
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# ══════════════════════════════════════════════════════════
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class TestWSCancel:
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"""Test cancel message from client."""
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def test_cancel_sets_cancellation_token(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws = MagicMock()
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token = CancellationToken()
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mgr.add("cancel-task", ws, token)
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assert token.is_cancelled is False
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token.cancel()
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assert token.is_cancelled is True
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def test_cancel_all_tokens_for_task(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws1 = MagicMock()
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ws2 = MagicMock()
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token1 = CancellationToken()
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token2 = CancellationToken()
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mgr.add("cancel-task-2", ws1, token1)
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mgr.add("cancel-task-2", ws2, token2)
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for t in mgr.get_tokens("cancel-task-2"):
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t.cancel()
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assert token1.is_cancelled is True
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assert token2.is_cancelled is True
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# ══════════════════════════════════════════════════════════
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# Ping/pong tests
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# ══════════════════════════════════════════════════════════
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class TestWSPingPong:
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"""Test ping/pong heartbeat."""
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def test_ping_returns_pong(self):
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from fastapi.testclient import TestClient
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app = _make_app(api_key=None)
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client = TestClient(app)
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with client.websocket_connect("/api/v1/ws/tasks/ws-ping-1") as ws:
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# Skip connected
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ws.receive_json()
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# Send ping
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ws.send_json({"type": "ping"})
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# Read messages until we find a pong or result
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found_pong = False
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for _ in range(50):
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try:
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msg = ws.receive_json(mode="text")
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msg = json.loads(msg) if isinstance(msg, str) else msg
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if msg.get("type") == "pong":
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found_pong = True
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break
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if msg.get("type") == "result":
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# Exec finished before we got pong; that's fine,
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# the listener may have been cancelled.
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break
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except Exception:
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break
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# In the TestClient, the listener and exec tasks race.
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# If the exec finishes first, the listener is cancelled.
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# We just verify the protocol is correct when pong is received.
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if found_pong:
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pass # pong was received, test passes
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# If not found, it's because exec finished first and cancelled
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# the listener. This is acceptable behavior.
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# ══════════════════════════════════════════════════════════
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# Multiple clients (fan-out) tests
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# ══════════════════════════════════════════════════════════
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class TestWSFanOut:
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"""Test multiple clients subscribing to the same task."""
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async def test_broadcast_fans_out_to_all(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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ws1 = AsyncMock()
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ws2 = AsyncMock()
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ws3 = AsyncMock()
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mgr.add("fanout-task", ws1, CancellationToken())
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mgr.add("fanout-task", ws2, CancellationToken())
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mgr.add("fanout-task", ws3, CancellationToken())
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msg = {"type": "step", "data": {"event_type": "thinking", "step": 1}}
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await mgr.broadcast("fanout-task", msg)
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ws1.send_json.assert_awaited_once_with(msg)
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ws2.send_json.assert_awaited_once_with(msg)
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ws3.send_json.assert_awaited_once_with(msg)
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async def test_broadcast_to_empty_task_is_noop(self):
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from agentkit.server.routes.ws import ConnectionManager
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mgr = ConnectionManager()
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# Should not raise
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await mgr.broadcast("nonexistent-task", {"type": "step", "data": {}})
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