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"""Integration tests for WebSocket connection lifecycle.
[Task]: T079
[From]: specs/004-ai-chatbot/tasks.md
These tests verify the WebSocket connection management:
- Connection establishment with JWT authentication
- Message broadcasting to multiple connections
- Connection cleanup on disconnect
- Authentication failure handling
"""
import asyncio
import uuid
from unittest.mock import AsyncMock, MagicMock, patch
import pytest
from fastapi.testclient import TestClient
from fastapi import WebSocket
from httpx_ws import aconnect_wsjson
from core.database import get_db
from core.security import create_access_token
from main import app
# Test database session dependency override
@pytest.fixture
def db_session():
"""Mock database session for testing."""
yield MagicMock()
@pytest.fixture
def test_user():
"""Create a test user ID."""
return str(uuid.uuid4())
@pytest.fixture
def test_jwt(test_user):
"""Create a test JWT token."""
return create_access_token({"sub": test_user})
@pytest.fixture
def client(db_session):
"""Create a test client with database override."""
app.dependency_overrides[get_db] = lambda: db_session
with TestClient(app) as test_client:
yield test_client
app.dependency_overrides.clear()
class TestWebSocketConnection:
"""Tests for WebSocket connection lifecycle."""
def test_websocket_connection_established(self, client: TestClient, test_user, test_jwt):
"""Test that WebSocket connection can be established with valid JWT.
[From]: specs/004-ai-chatbot/research.md - Section 4
"""
with client.websocket_connect(
f"/ws/{test_user}/chat?token={test_jwt}"
) as websocket:
# Receive connection_established event
data = websocket.receive_json()
assert data["event_type"] == "connection_established"
assert data["message"] == "Connected to real-time updates"
assert data["user_id"] == test_user
def test_websocket_connection_invalid_jwt(self, client: TestClient, test_user):
"""Test that WebSocket connection fails with invalid JWT.
[From]: specs/004-ai-chatbot/research.md - Section 4
"""
invalid_token = "invalid.jwt.token"
with pytest.raises(Exception) as exc_info:
with client.websocket_connect(
f"/ws/{test_user}/chat?token={invalid_token}"
) as websocket:
websocket.receive_json()
# Connection should be closed
assert exc_info.value is not None
def test_websocket_connection_user_mismatch(self, client: TestClient, test_user, test_jwt):
"""Test that WebSocket connection fails when user_id doesn't match JWT.
[From]: specs/004-ai-chatbot/research.md - Section 4
"""
wrong_user = str(uuid.uuid4())
with pytest.raises(Exception):
with client.websocket_connect(
f"/ws/{wrong_user}/chat?token={test_jwt}"
) as websocket:
websocket.receive_json()
def test_websocket_disconnection_cleanup(self, client: TestClient, test_user, test_jwt):
"""Test that WebSocket connection is properly cleaned up on disconnect.
[From]: specs/004-ai-chatbot/research.md - Section 4
"""
from websockets.manager import manager
# Clear any existing connections
manager.active_connections.clear()
# Connect first client
with client.websocket_connect(
f"/ws/{test_user}/chat?token={test_jwt}"
) as websocket1:
# Verify connection is tracked
assert test_user in manager.active_connections
assert len(manager.active_connections[test_user]) == 1
# Disconnect
pass
# Verify connection was cleaned up
# (Note: In real scenario, there might be a delay)
assert test_user not in manager.active_connections or len(
manager.active_connections.get(test_user, [])
) == 0
class TestWebSocketMultipleConnections:
"""Tests for multiple WebSocket connections per user."""
def test_multiple_connections_same_user(self, client: TestClient, test_user, test_jwt):
"""Test that multiple WebSocket connections can be established for the same user.
[From]: specs/004-ai-chatbot/research.md - Section 4
This simulates multiple browser tabs.
"""
from websockets.manager import manager
manager.active_connections.clear()
# Connect first client
with client.websocket_connect(
f"/ws/{test_user}/chat?token={test_jwt}"
) as websocket1:
websocket1.receive_json()
# Connect second client
with client.websocket_connect(
f"/ws/{test_user}/chat?token={test_jwt}"
) as websocket2:
websocket2.receive_json()
# Both connections should be tracked
assert test_user in manager.active_connections
assert len(manager.active_connections[test_user]) == 2
def test_broadcast_to_multiple_connections(self, client: TestClient, test_user, test_jwt):
"""Test that broadcasts reach all connections for a user.
[From]: specs/004-ai-chatbot/research.md - Section 4
"""
from websockets.manager import manager
manager.active_connections.clear()
received_messages = []
def receive_messages(websocket, target_list):
try:
# Skip connection_established
websocket.receive_json()
# Receive subsequent messages
while True:
data = websocket.receive_json(timeout=0.5)
target_list.append(data)
except:
pass
# Connect two clients
with client.websocket_connect(
f"/ws/{test_user}/chat?token={test_jwt}"
) as ws1:
ws1.receive_json() # connection_established
with client.websocket_connect(
f"/ws/{test_user}/chat?token={test_jwt}"
) as ws2:
ws2.receive_json() # connection_established
# Broadcast a test event
test_event = {
"event_type": "test_event",
"message": "Test broadcast",
}
asyncio.run(manager.broadcast(test_user, test_event))
# Both clients should receive the event
# (Note: In synchronous test, this is tricky - just verify broadcast doesn't error)
assert test_user in manager.active_connections
class TestWebSocketMessageHandling:
"""Tests for WebSocket message handling."""
def test_websocket_receives_json_messages(self, client: TestClient, test_user, test_jwt):
"""Test that WebSocket can receive and parse JSON messages.
[From]: specs/004-ai-chatbot/research.md - Section 4
"""
with client.websocket_connect(
f"/ws/{test_user}/chat?token={test_jwt}"
) as websocket:
# Receive connection_established
data = websocket.receive_json()
assert isinstance(data, dict)
assert "event_type" in data
assert "message" in data
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