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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_empty_array_slice():
# inspired by PR021::test_getitem
a = ak.operations.from_json("[[], [[], []], [[], [], []]]")
assert to_list(a[2, 1, np.array([], dtype=np.int64)]) == []
# FIXME: assert [[]] == []
# assert to_list(a[2, np.array([1], dtype=np.int64), np.array([], dtype=np.int64)]) == []
a = ak.operations.from_iter([[], [[], []], [[], [], []]], highlevel=False)
assert to_list(a[2, 1, np.array([], dtype=np.int64)]) == []
assert (
a.to_typetracer()[2, 1, np.array([], dtype=np.int64)].form
== a[2, 1, np.array([], dtype=np.int64)].form
)
assert to_list(a[2, np.array([1], dtype=int), np.array([], dtype=int)]) == []
assert (
a.to_typetracer()[
2, np.array([1], dtype=np.int64), np.array([], dtype=np.int64)
].form
== a[2, np.array([1], dtype=np.int64), np.array([], dtype=np.int64)].form
)
# inspired by PR015::test_deep_numpy
content = ak.contents.NumpyArray(
np.array([[0.0, 1.1], [2.2, 3.3], [4.4, 5.5], [6.6, 7.7], [8.8, 9.9]])
)
listarray = ak.contents.ListArray(
ak.index.Index64(np.array([0, 3, 3])),
ak.index.Index64(np.array([3, 3, 5])),
content,
)
assert to_list(listarray[[2, 0, 0, -1], [1, -1, 0, 0], [0, 1, 0, 1]]) == [
8.8,
5.5,
0.0,
7.7,
]
assert (
listarray.to_typetracer()[[2, 0, 0, -1], [1, -1, 0, 0], [0, 1, 0, 1]].form
== listarray[[2, 0, 0, -1], [1, -1, 0, 0], [0, 1, 0, 1]].form
)
assert to_list(listarray[2, 1, np.array([], dtype=np.int64)]) == []
assert (
listarray.to_typetracer()[2, 1, np.array([], dtype=np.int64)].form
== listarray[2, 1, np.array([], dtype=np.int64)].form
)
assert to_list(listarray[2, 1, []]) == []
assert listarray.to_typetracer()[2, 1, []].form == listarray[2, 1, []].form
assert to_list(listarray[2, [1], []]) == []
assert listarray.to_typetracer()[2, [1], []].form == listarray[2, [1], []].form
assert to_list(listarray[2, [], []]) == []
assert listarray.to_typetracer()[2, [], []].form == listarray[2, [], []].form
def test_nonflat_slice():
array = np.arange(2 * 3 * 5).reshape(2, 3, 5)
content = ak.contents.NumpyArray(array.reshape(-1))
inneroffsets = ak.index.Index64(np.array([0, 5, 10, 15, 20, 25, 30]))
outeroffsets = ak.index.Index64(np.array([0, 3, 6]))
listoffsetarray = ak.contents.ListOffsetArray(
outeroffsets, ak.contents.ListOffsetArray(inneroffsets, content)
)
assert to_list(
array[[1, 0, 1, 1, 1, 0], [2, 0, 1, 1, 2, 0], [2, 4, 2, 4, 0, 1]]
) == [27, 4, 22, 24, 25, 1]
assert to_list(
array[
[[1, 0], [1, 1], [1, 0]], [[2, 0], [1, 1], [2, 0]], [[2, 4], [2, 4], [0, 1]]
]
) == [[27, 4], [22, 24], [25, 1]]
one = listoffsetarray[[1, 0, 1, 1, 1, 0], [2, 0, 1, 1, 2, 0], [2, 4, 2, 4, 0, 1]]
assert to_list(one) == [27, 4, 22, 24, 25, 1]
assert (
listoffsetarray.to_typetracer()[
[1, 0, 1, 1, 1, 0], [2, 0, 1, 1, 2, 0], [2, 4, 2, 4, 0, 1]
].form
== one.form
)
def test_nonflat_slice_2():
array = np.arange(2 * 3 * 5).reshape(2, 3, 5)
content = ak.contents.NumpyArray(array.reshape(-1))
inneroffsets = ak.index.Index64(np.array([0, 5, 10, 15, 20, 25, 30]))
outeroffsets = ak.index.Index64(np.array([0, 3, 6]))
listoffsetarray = ak.contents.ListOffsetArray(
outeroffsets, ak.contents.ListOffsetArray(inneroffsets, content)
)
two = listoffsetarray[
np.asarray([[1, 0], [1, 1], [1, 0]]),
np.asarray([[2, 0], [1, 1], [2, 0]]),
np.asarray([[2, 4], [2, 4], [0, 1]]),
]
assert to_list(two) == [[27, 4], [22, 24], [25, 1]]
def test_newaxis():
array = np.arange(2 * 3 * 5).reshape(2, 3, 5)
content = ak.contents.NumpyArray(array.reshape(-1))
inneroffsets = ak.index.Index64(np.array([0, 5, 10, 15, 20, 25, 30]))
outeroffsets = ak.index.Index64(np.array([0, 3, 6]))
listoffsetarray = ak.contents.ListOffsetArray(
outeroffsets, ak.contents.ListOffsetArray(inneroffsets, content)
)
assert to_list(array[:, np.newaxis]) == [
[[[0, 1, 2, 3, 4], [5, 6, 7, 8, 9], [10, 11, 12, 13, 14]]],
[[[15, 16, 17, 18, 19], [20, 21, 22, 23, 24], [25, 26, 27, 28, 29]]],
]
assert to_list(listoffsetarray[:, np.newaxis]) == [
[[[0, 1, 2, 3, 4], [5, 6, 7, 8, 9], [10, 11, 12, 13, 14]]],
[[[15, 16, 17, 18, 19], [20, 21, 22, 23, 24], [25, 26, 27, 28, 29]]],
]
assert (
listoffsetarray.to_typetracer()[:, np.newaxis].form
== listoffsetarray[:, np.newaxis].form
)
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