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import json
from langchain.memory import ConversationBufferMemory
from langchain.memory.chat_message_histories import FirestoreChatMessageHistory
from langchain.schema import _message_to_dict
def test_memory_with_message_store() -> None:
"""Test the memory with a message store."""
message_history = FirestoreChatMessageHistory(
collection_name="chat_history",
session_id="my-test-session",
user_id="my-test-user",
)
memory = ConversationBufferMemory(
memory_key="baz", chat_memory=message_history, return_messages=True
)
# add some messages
memory.chat_memory.add_ai_message("This is me, the AI")
memory.chat_memory.add_user_message("This is me, the human")
# get the message history from the memory store
# and check if the messages are there as expected
message_history = FirestoreChatMessageHistory(
collection_name="chat_history",
session_id="my-test-session",
user_id="my-test-user",
)
memory = ConversationBufferMemory(
memory_key="baz", chat_memory=message_history, return_messages=True
)
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
# remove the record from Firestore, so the next test run won't pick it up
memory.chat_memory.clear()
assert memory.chat_memory.messages == []
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