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72 lines
2.8 KiB
Python
72 lines
2.8 KiB
Python
import tempfile
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from pathlib import Path
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from typing import Generator
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import pytest
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from langchain.memory.chat_message_histories import FileChatMessageHistory
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from langchain.schema import AIMessage, HumanMessage
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@pytest.fixture
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def file_chat_message_history() -> Generator[FileChatMessageHistory, None, None]:
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with tempfile.TemporaryDirectory() as temp_dir:
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file_path = Path(temp_dir) / "test_chat_history.json"
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file_chat_message_history = FileChatMessageHistory(str(file_path))
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yield file_chat_message_history
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def test_add_messages(file_chat_message_history: FileChatMessageHistory) -> None:
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file_chat_message_history.add_user_message("Hello!")
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file_chat_message_history.add_ai_message("Hi there!")
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messages = file_chat_message_history.messages
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assert len(messages) == 2
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assert isinstance(messages[0], HumanMessage)
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assert isinstance(messages[1], AIMessage)
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assert messages[0].content == "Hello!"
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assert messages[1].content == "Hi there!"
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def test_clear_messages(file_chat_message_history: FileChatMessageHistory) -> None:
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file_chat_message_history.add_user_message("Hello!")
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file_chat_message_history.add_ai_message("Hi there!")
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file_chat_message_history.clear()
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messages = file_chat_message_history.messages
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assert len(messages) == 0
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def test_multiple_sessions(file_chat_message_history: FileChatMessageHistory) -> None:
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# First session
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file_chat_message_history.add_user_message("Hello, AI!")
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file_chat_message_history.add_ai_message("Hello, how can I help you?")
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file_chat_message_history.add_user_message("Tell me a joke.")
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file_chat_message_history.add_ai_message(
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"Why did the chicken cross the road? To get to the other side!"
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)
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# Ensure the messages are added correctly in the first session
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messages = file_chat_message_history.messages
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assert len(messages) == 4
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assert messages[0].content == "Hello, AI!"
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assert messages[1].content == "Hello, how can I help you?"
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assert messages[2].content == "Tell me a joke."
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expected_content = "Why did the chicken cross the road? To get to the other side!"
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assert messages[3].content == expected_content
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# Second session (reinitialize FileChatMessageHistory)
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file_path = file_chat_message_history.file_path
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second_session_chat_message_history = FileChatMessageHistory(
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file_path=str(file_path)
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)
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# Ensure the history is maintained in the second session
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messages = second_session_chat_message_history.messages
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assert len(messages) == 4
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assert messages[0].content == "Hello, AI!"
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assert messages[1].content == "Hello, how can I help you?"
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assert messages[2].content == "Tell me a joke."
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expected_content = "Why did the chicken cross the road? To get to the other side!"
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assert messages[3].content == expected_content
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