test_tool_retry_working_tool_no_retry_needed() — langchain Function Reference

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_tool_retry.py lines 153–179

def test_tool_retry_working_tool_no_retry_needed() -> None:
    """Test ToolRetryMiddlewarewith a working tool (no retry needed)."""
    model = FakeToolCallingModel(
        tool_calls=[
            [ToolCall(name="working_tool", args={"value": "test"}, id="1")],
            [],
        ]
    )

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

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

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

    tool_messages = [m for m in result["messages"] if isinstance(m, ToolMessage)]
    assert len(tool_messages) == 1
    assert "Success: test" in tool_messages[0].content
    assert tool_messages[0].status != "error"