from importlib import import_module

import pytest


@pytest.mark.parametrize(
    ("import_path", "name"),
    [
        ("lightning.pytorch.accelerators", "IPUAccelerator"),
        ("lightning.pytorch.accelerators.ipu", "IPUAccelerator"),
        ("lightning.pytorch.strategies", "IPUStrategy"),
        ("lightning.pytorch.strategies.ipu", "IPUStrategy"),
        ("lightning.pytorch.plugins.precision", "IPUPrecisionPlugin"),
        ("lightning.pytorch.plugins.precision.ipu", "IPUPrecisionPlugin"),
    ],
)
def test_extracted_ipu(import_path, name):
    module = import_module(import_path)
    cls = getattr(module, name)
    with pytest.raises(NotImplementedError, match=f"{name}` class has been moved to an external package.*"):
        cls()