Files
letta-server/tests/test_long_running_agents.py
2026-01-12 10:57:49 -08:00

133 lines
4.3 KiB
Python

import os
import threading
import time
import httpx
import pytest
import requests
from dotenv import load_dotenv
from letta_client import Letta, MessageCreate, TextContent
from tests.helpers.utils import upload_test_agentfile_from_disk
RESEARCH_INSTRUCTIONS = "\n Lead Name: Kian Jones\n Lead Title: Software Engineer\n Lead LinkedIn URL: https://www.linkedin.com/in/kian-jones\n Company Name: Letta\n Company Domain: letta.com\n Company Industry: technology/software/ai\n \n**Research Instructions**\n"
DEEP_RESEARCH_INSTRUCTIONS = "Let's get started, we have to research mantis shrimps. I need to know everything there is, or my grandmother will die. Please begin immediately and do a great job, they are scaring me."
@pytest.fixture(scope="module")
def server_url() -> str:
"""
Provides the URL for the Letta server.
If LETTA_SERVER_URL is not set, starts the server in a background thread
and polls until it's accepting connections.
"""
def _run_server() -> None:
load_dotenv()
from letta.server.rest_api.app import start_server
start_server(debug=True)
api_url = os.getenv("LETTA_API_URL")
if api_url:
return api_url
url: str = os.getenv("LETTA_SERVER_URL", "http://localhost:8283")
if not os.getenv("LETTA_SERVER_URL"):
thread = threading.Thread(target=_run_server, daemon=True)
thread.start()
# Poll until the server is up (or timeout)
timeout_seconds = 60
deadline = time.time() + timeout_seconds
while time.time() < deadline:
try:
resp = requests.get(url + "/v1/health")
if resp.status_code < 500:
break
except requests.exceptions.RequestException:
pass
time.sleep(0.1)
else:
raise RuntimeError(f"Could not reach {url} within {timeout_seconds}s")
return url
@pytest.fixture(scope="module")
def client(server_url: str) -> Letta:
"""
Creates and returns a synchronous Letta REST client for testing.
"""
api_url = os.getenv("LETTA_API_URL")
api_key = os.getenv("LETTA_API_KEY")
if api_url and not api_key:
raise ValueError("LETTA_API_KEY is required when passing LETTA_API_URL")
client_instance = Letta(token=api_key, base_url=api_url if api_url else server_url)
return client_instance
async def test_deep_research_agent(client: Letta, server_url, disable_e2b_api_key):
imported_af = upload_test_agentfile_from_disk(client, "deep-thought.af")
agent_id = imported_af.agent_ids[0]
try:
response = client.agents.messages.create_stream(
agent_id=agent_id,
stream_tokens=True,
include_pings=True,
messages=[
MessageCreate(
role="user",
content=[
TextContent(
text=DEEP_RESEARCH_INSTRUCTIONS,
)
],
)
],
)
for chunk in response:
if chunk.message_type is not None:
print(chunk)
except httpx.ReadTimeout as e:
print("Timeout on create_stream. Consider enabling pings in create_stream if you have long running agents. ", e)
assert False
finally:
client.agents.delete(agent_id=agent_id)
async def test_kylie_agent(client: Letta, server_url, disable_e2b_api_key):
imported_af = upload_test_agentfile_from_disk(client, "long_running_kylie.af")
agent_id = imported_af.agent_ids[0]
try:
response = client.agents.messages.create_stream(
agent_id=agent_id,
include_pings=True,
stream_tokens=True,
messages=[
MessageCreate(
role="user",
content=[
TextContent(
text=RESEARCH_INSTRUCTIONS,
)
],
)
],
)
for chunk in response:
if chunk.message_type is not None:
print(chunk)
except httpx.ReadTimeout as e:
print("Timeout on create_stream. Consider enabling pings in create_stream if you have long running agents. ", e)
assert False
finally:
client.agents.delete(agent_id=agent_id)