FakeRetriever Class — langchain Architecture

Architecture documentation for the FakeRetriever class in test_runnable.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  a82d2419_e0d1_82be_e87c_7dcfd53e267d["FakeRetriever"]
  3a20478a_3692_141f_433b_a32429b00020["BaseRetriever"]
  a82d2419_e0d1_82be_e87c_7dcfd53e267d -->|extends| 3a20478a_3692_141f_433b_a32429b00020
  26df6ad8_0189_51d0_c3c1_6c3248893ff5["test_runnable.py"]
  a82d2419_e0d1_82be_e87c_7dcfd53e267d -->|defined in| 26df6ad8_0189_51d0_c3c1_6c3248893ff5
  f6eb9476_ce7e_72c8_ae13_f50be82d84bb["_get_relevant_documents()"]
  a82d2419_e0d1_82be_e87c_7dcfd53e267d -->|method| f6eb9476_ce7e_72c8_ae13_f50be82d84bb
  5d47073f_a406_c4ed_7c2a_20d021fb7be2["_aget_relevant_documents()"]
  a82d2419_e0d1_82be_e87c_7dcfd53e267d -->|method| 5d47073f_a406_c4ed_7c2a_20d021fb7be2

Relationship Graph

Source Code

libs/core/tests/unit_tests/runnables/test_runnable.py lines 209–220

class FakeRetriever(BaseRetriever):
    @override
    def _get_relevant_documents(
        self, query: str, *, run_manager: CallbackManagerForRetrieverRun
    ) -> list[Document]:
        return [Document(page_content="foo"), Document(page_content="bar")]

    @override
    async def _aget_relevant_documents(
        self, query: str, *, run_manager: AsyncCallbackManagerForRetrieverRun
    ) -> list[Document]:
        return [Document(page_content="foo"), Document(page_content="bar")]