SampleChatHistory Class — langchain Architecture

Architecture documentation for the SampleChatHistory class in test_chat_history.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  ff5be886_c526_befa_5910_959d79028e84["SampleChatHistory"]
  bafcb99b_bf29_77cc_2ba1_06c40c54e908["BaseChatMessageHistory"]
  ff5be886_c526_befa_5910_959d79028e84 -->|extends| bafcb99b_bf29_77cc_2ba1_06c40c54e908
  bb44d82a_7f9d_8d19_baa4_96f8844d68a3["test_chat_history.py"]
  ff5be886_c526_befa_5910_959d79028e84 -->|defined in| bb44d82a_7f9d_8d19_baa4_96f8844d68a3
  4b8b5fff_3cc8_dd90_5690_5d6922244d35["__init__()"]
  ff5be886_c526_befa_5910_959d79028e84 -->|method| 4b8b5fff_3cc8_dd90_5690_5d6922244d35
  fdc9b751_6f24_304f_2bef_9245cfd574b0["add_message()"]
  ff5be886_c526_befa_5910_959d79028e84 -->|method| fdc9b751_6f24_304f_2bef_9245cfd574b0
  a586e127_e8cf_b8e1_7d81_19a8bdc9ae78["clear()"]
  ff5be886_c526_befa_5910_959d79028e84 -->|method| a586e127_e8cf_b8e1_7d81_19a8bdc9ae78

Relationship Graph

Source Code

libs/core/tests/unit_tests/chat_history/test_chat_history.py lines 10–20

    class SampleChatHistory(BaseChatMessageHistory):
        def __init__(self, *, store: list[BaseMessage]) -> None:
            self.store = store

        def add_message(self, message: BaseMessage) -> None:
            """Add a message to the store."""
            self.store.append(message)

        def clear(self) -> None:
            """Clear the store."""
            raise NotImplementedError