forked from Archives/langchain
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
"""Test Momento chat message history functionality.
|
|
|
|
To run tests, set the environment variable MOMENTO_AUTH_TOKEN to a valid
|
|
Momento auth token. This can be obtained by signing up for a free
|
|
Momento account at https://gomomento.com/.
|
|
"""
|
|
import json
|
|
import uuid
|
|
from datetime import timedelta
|
|
from typing import Iterator
|
|
|
|
import pytest
|
|
from momento import CacheClient, Configurations, CredentialProvider
|
|
|
|
from langchain.memory import ConversationBufferMemory
|
|
from langchain.memory.chat_message_histories import MomentoChatMessageHistory
|
|
from langchain.schema import _message_to_dict
|
|
|
|
|
|
def random_string() -> str:
|
|
return str(uuid.uuid4())
|
|
|
|
|
|
@pytest.fixture(scope="function")
|
|
def message_history() -> Iterator[MomentoChatMessageHistory]:
|
|
cache_name = f"langchain-test-cache-{random_string()}"
|
|
client = CacheClient(
|
|
Configurations.Laptop.v1(),
|
|
CredentialProvider.from_environment_variable("MOMENTO_AUTH_TOKEN"),
|
|
default_ttl=timedelta(seconds=30),
|
|
)
|
|
try:
|
|
chat_message_history = MomentoChatMessageHistory(
|
|
session_id="my-test-session",
|
|
cache_client=client,
|
|
cache_name=cache_name,
|
|
)
|
|
yield chat_message_history
|
|
finally:
|
|
client.delete_cache(cache_name)
|
|
|
|
|
|
def test_memory_empty_on_new_session(
|
|
message_history: MomentoChatMessageHistory,
|
|
) -> None:
|
|
memory = ConversationBufferMemory(
|
|
memory_key="foo", chat_memory=message_history, return_messages=True
|
|
)
|
|
assert memory.chat_memory.messages == []
|
|
|
|
|
|
def test_memory_with_message_store(message_history: MomentoChatMessageHistory) -> None:
|
|
memory = ConversationBufferMemory(
|
|
memory_key="baz", chat_memory=message_history, return_messages=True
|
|
)
|
|
|
|
# Add some messages to the memory store
|
|
memory.chat_memory.add_ai_message("This is me, the AI")
|
|
memory.chat_memory.add_user_message("This is me, the human")
|
|
|
|
# Verify that the messages are in the store
|
|
messages = memory.chat_memory.messages
|
|
messages_json = json.dumps([_message_to_dict(msg) for msg in messages])
|
|
|
|
assert "This is me, the AI" in messages_json
|
|
assert "This is me, the human" in messages_json
|
|
|
|
# Verify clearing the store
|
|
memory.chat_memory.clear()
|
|
assert memory.chat_memory.messages == []
|