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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_unknown_type():
array = ak.Array({"x": np.arange(10)})
array = ak.operations.with_field(array=array, what=None, where="unknown field1")
array = ak.operations.with_field(array=array, what=[None], where="unknown field2")
# Try to access the type of a single element
# This raises a ValueError in #879
tpe1 = array["unknown field1"].type
tpe2 = array["unknown field2"].type
assert str(tpe1) == "10 * ?unknown"
assert str(tpe2) == "10 * ?unknown"
def test_in_place_wrapper_broadcasting():
array = ak.Array({"x": np.arange(3)})
array["unknown field"] = None
assert array["unknown field"].to_list() == [None, None, None]
assert ak.operations.fields(array) == ["x", "unknown field"]
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