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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
from awkward._nplikes.shape import unknown_length
def test_mixed_known_lengths():
first = ak.from_numpy(np.arange(3 * 4).reshape(3, 4), highlevel=False)
first_tt = first.to_typetracer(forget_length=False)
second = ak.from_numpy(6 - np.arange(3 * 4).reshape(3, 4) * 2, highlevel=False)
second_tt = second.to_typetracer(forget_length=True)
result_tt = ak.concatenate((first_tt, second_tt), axis=1)
result = ak.concatenate((first, second), axis=1)
assert result_tt.layout.form == result.layout.form
assert result_tt.layout.length == result.layout.length == 3
def test_known_lengths():
first = ak.from_numpy(np.arange(3 * 4).reshape(3, 4), highlevel=False)
first_tt = first.to_typetracer(forget_length=False)
second = ak.from_numpy(6 - np.arange(3 * 4).reshape(3, 4) * 2, highlevel=False)
second_tt = second.to_typetracer(forget_length=False)
result_tt = ak.concatenate((first_tt, second_tt), axis=1)
result = ak.concatenate((first, second), axis=1)
assert result_tt.layout.form == result.layout.form
assert result_tt.layout.length == result.layout.length == 3
def test_unknown_lengths():
first = ak.from_numpy(np.arange(3 * 4).reshape(3, 4), highlevel=False)
first_tt = first.to_typetracer(forget_length=True)
second = ak.from_numpy(6 - np.arange(3 * 4).reshape(3, 4) * 2, highlevel=False)
second_tt = second.to_typetracer(forget_length=True)
result_tt = ak.concatenate((first_tt, second_tt), axis=1)
result = ak.concatenate((first, second), axis=1)
assert result_tt.layout.form == result.layout.form
assert result_tt.layout.length is unknown_length
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