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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
import awkward as ak
from awkward._nplikes.numpy import Numpy
from awkward._nplikes.shape import unknown_length
from awkward._nplikes.virtual import VirtualNDArray
@pytest.mark.parametrize("offsets_length", [5, unknown_length])
@pytest.mark.parametrize("content_length", [9, unknown_length])
def test(offsets_length, content_length):
offset_generator = lambda: np.array([0, 2, 4, 5, 6], dtype=np.int64) # noqa: E731
data_generator = lambda: np.array([1, 2, 3, 4, 5, 6, 7, 8, 9], dtype=np.int64) # noqa: E731
offsets = ak.index.Index(
VirtualNDArray(
Numpy.instance(),
shape=(offsets_length,),
dtype=np.int64,
generator=offset_generator,
)
)
data = ak.contents.NumpyArray(
VirtualNDArray(
Numpy.instance(),
shape=(content_length,),
dtype=np.int64,
generator=data_generator,
)
)
array = ak.Array(ak.contents.ListOffsetArray(offsets, data))
assert array.to_list() == [[1, 2], [3, 4], [5], [6]]
buffers = {"node0-offsets": offset_generator, "node1-data": data_generator}
form = ak.forms.ListOffsetForm(
"i64", ak.forms.NumpyForm("int64", form_key="node1"), form_key="node0"
)
array = ak.from_buffers(form, 4, buffers)
assert array.to_list() == [[1, 2], [3, 4], [5], [6]]
offsets = VirtualNDArray(
Numpy.instance(),
shape=(offsets_length,),
dtype=np.int64,
generator=offset_generator,
)
data = VirtualNDArray(
Numpy.instance(),
shape=(content_length,),
dtype=np.int64,
generator=data_generator,
)
buffers = {"node0-offsets": offsets, "node1-data": data}
form = ak.forms.ListOffsetForm(
"i64", ak.forms.NumpyForm("int64", form_key="node1"), form_key="node0"
)
array = ak.from_buffers(form, 4, buffers)
assert array.to_list() == [[1, 2], [3, 4], [5], [6]]
|
