test_model_retry_working_model_no_retry_needed() — langchain Function Reference

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_model_retry.py lines 149–169

def test_model_retry_working_model_no_retry_needed() -> None:
    """Test ModelRetryMiddleware with a working model (no retry needed)."""
    model = FakeToolCallingModel()

    retry = ModelRetryMiddleware(max_retries=2, initial_delay=0.01, jitter=False)

    agent = create_agent(
        model=model,
        tools=[],
        middleware=[retry],
        checkpointer=InMemorySaver(),
    )

    result = agent.invoke(
        {"messages": [HumanMessage("Hello")]},
        {"configurable": {"thread_id": "test"}},
    )

    ai_messages = [m for m in result["messages"] if isinstance(m, AIMessage)]
    assert len(ai_messages) >= 1
    assert "Hello" in ai_messages[-1].content