test_exception_error_messages() — langchain Function Reference

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_tool_call_limit.py lines 373–390

def test_exception_error_messages() -> None:
    """Test that error messages include expected information."""
    # Test for specific tool
    with pytest.raises(ToolCallLimitExceededError) as exc_info:
        raise ToolCallLimitExceededError(
            thread_count=5, run_count=3, thread_limit=4, run_limit=2, tool_name="search"
        )
    msg = str(exc_info.value)
    assert "search" in msg.lower()
    assert "5/4" in msg or "thread" in msg.lower()

    # Test for all tools
    with pytest.raises(ToolCallLimitExceededError) as exc_info:
        raise ToolCallLimitExceededError(
            thread_count=10, run_count=5, thread_limit=8, run_limit=None, tool_name=None
        )
    msg = str(exc_info.value)
    assert "10/8" in msg or "thread" in msg.lower()