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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
def test():
layout = ak.contents.IndexedArray(
ak.index.Index64(np.array([0, 1, 2, 3], np.int64)),
ak.contents.NumpyArray(
np.arange(10), parameters={"this": "that", "some": "hidden"}
),
parameters={"some": "other"},
)
assert layout.project().parameter("some") == "other"
assert layout.project().parameter("this") == "that"
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