AlwaysFailModel Class — langchain Architecture

Architecture documentation for the AlwaysFailModel class in test_wrap_model_call.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  284e31b9_b84a_1a9f_d5f5_b58899a89108["AlwaysFailModel"]
  0f829642_e361_67a1_cbca_f82839bbbd31["GenericFakeChatModel"]
  284e31b9_b84a_1a9f_d5f5_b58899a89108 -->|extends| 0f829642_e361_67a1_cbca_f82839bbbd31
  573473e5_eb93_a7d7_84ba_c975071c09af["test_wrap_model_call.py"]
  284e31b9_b84a_1a9f_d5f5_b58899a89108 -->|defined in| 573473e5_eb93_a7d7_84ba_c975071c09af
  24875d28_6fee_0735_a58e_fd02cb133250["_generate()"]
  284e31b9_b84a_1a9f_d5f5_b58899a89108 -->|method| 24875d28_6fee_0735_a58e_fd02cb133250

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py lines 156–166

        class AlwaysFailModel(GenericFakeChatModel):
            @override
            def _generate(
                self,
                messages: list[BaseMessage],
                stop: list[str] | None = None,
                run_manager: CallbackManagerForLLMRun | None = None,
                **kwargs: Any,
            ) -> ChatResult:
                msg = "Always fails"
                raise ValueError(msg)