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# BSD 3-Clause License; see https://github.com/scikit-hep/awkward/blob/main/LICENSE
from __future__ import annotations
import numpy as np
import pytest # noqa: F401
import awkward as ak
to_list = ak.operations.to_list
def test():
nparray = ak.contents.NumpyArray(np.array([1, 2, 3], dtype=np.int64))
listarray = ak.contents.ListArray(
ak.index.Index64(np.array([0], dtype=np.int64)),
ak.index.Index64(np.array([3], dtype=np.int64)),
nparray,
)
indexedarray = ak.contents.IndexedArray(ak.index.Index64([]), listarray)
cart = ak.operations.cartesian([indexedarray, indexedarray], nested=True)
assert str(cart.type) == "0 * var * var * (int64, int64)"
assert to_list(cart) == []
cart = ak.operations.cartesian([indexedarray, indexedarray], nested=False)
assert str(cart.type) == "0 * var * (int64, int64)"
assert to_list(cart) == []
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