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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_numpyarray_getitem_bystrides():
a = np.arange(10)
b = ak.contents.NumpyArray(a)
assert b[3] == a[3]
assert b[-3] == a[-3]
assert to_list(b[()]) == to_list(a[()])
assert to_list(b[slice(None)]) == to_list(a[slice(None)])
assert to_list(b[slice(3, 7)]) == to_list(a[slice(3, 7)])
assert to_list(b[slice(3, 100)]) == to_list(a[slice(3, 100)])
assert to_list(b[slice(-100, 7)]) == to_list(a[slice(-100, 7)])
assert to_list(b[slice(3, -3)]) == to_list(a[slice(3, -3)])
assert to_list(b[slice(1, 7, 2)]) == to_list(a[slice(1, 7, 2)])
assert to_list(b[slice(-8, 7, 2)]) == to_list(a[slice(-8, 7, 2)])
assert to_list(b[slice(None, 7, 2)]) == to_list(a[slice(None, 7, 2)])
assert to_list(b[slice(None, -3, 2)]) == to_list(a[slice(None, -3, 2)])
assert to_list(b[slice(8, None, -1)]) == to_list(a[slice(8, None, -1)])
assert to_list(b[slice(8, None, -2)]) == to_list(a[slice(8, None, -2)])
assert to_list(b[slice(-2, None, -2)]) == to_list(a[slice(-2, None, -2)])
a = np.arange(7 * 5).reshape(7, 5)
b = ak.contents.NumpyArray(a)
assert to_list(b[()]) == to_list(a[()])
assert to_list(b[3]) == to_list(a[3])
assert to_list(b[(3, 2)]) == to_list(a[3, 2])
assert to_list(b[slice(1, 4)]) == to_list(a[slice(1, 4)])
assert to_list(b[(3, slice(1, 4))]) == to_list(a[3, slice(1, 4)])
assert to_list(b[(slice(1, 4), 3)]) == to_list(a[slice(1, 4), 3])
assert to_list(b[(slice(1, 4), slice(2, None))]) == to_list(
a[slice(1, 4), slice(2, None)]
)
assert to_list(b[(slice(None, None, -1), slice(2, None))]) == to_list(
a[slice(None, None, -1), slice(2, None)]
)
assert to_list(b[:, np.newaxis, :]) == to_list(a[:, np.newaxis, :])
assert to_list(b[np.newaxis, :, np.newaxis, :, np.newaxis]) == to_list(
a[np.newaxis, :, np.newaxis, :, np.newaxis]
)
assert to_list(b[Ellipsis, 3]) == to_list(a[Ellipsis, 3])
assert to_list(b[Ellipsis, 3, 2]) == to_list(a[Ellipsis, 3, 2])
assert to_list(b[3, Ellipsis]) == to_list(a[3, Ellipsis])
assert to_list(b[3, 2, Ellipsis]) == to_list(a[3, 2, Ellipsis])
def test_numpyarray_getitem_next():
a = np.arange(10)
b = ak.contents.NumpyArray(a)
c = np.array([7, 3, 3, 5])
assert to_list(b[c]) == to_list(a[c])
assert b.to_typetracer()[c].form == b[c].form
c = np.array([0, 0, 0, 1, 1, 1, 0, 1, 0, 1])
assert to_list(b[c]) == to_list(a[c])
assert b.to_typetracer()[c].form == b[c].form
c = np.array([False, False, False, True, True, True, False, True, False, True])
assert to_list(b[c]) == to_list(a[c])
assert b.to_typetracer()[c].form == b[c].form
c = np.array([], dtype=np.int64)
assert to_list(b[c]) == to_list(a[c])
assert b.to_typetracer()[c].form == b[c].form
a = np.arange(10 * 3).reshape(10, 3)
b = ak.contents.NumpyArray(a)
c = np.array([7, 3, 3, 5])
assert to_list(b[c]) == to_list(a[c])
assert b.to_typetracer()[c].form == b[c].form
c = np.array([False, False, False, True, True, True, False, True, False, True])
assert to_list(b[c]) == to_list(a[c])
assert b.to_typetracer()[c].form == b[c].form
c = np.array([], dtype=np.int64)
assert to_list(b[c]) == to_list(a[c])
assert b.to_typetracer()[c].form == b[c].form
a = np.arange(7 * 5).reshape(7, 5)
b = ak.contents.NumpyArray(a)
c1 = np.array([], np.int64)
c2 = np.array([], np.int64)
assert to_list(b[c1, c2]) == to_list(a[c1, c2])
assert a[c1, c2].ndim == 1
assert b.to_typetracer()[c1, c2].form == b[c1, c2].form
a = np.arange(7 * 5).reshape(7, 5)
b = ak.contents.NumpyArray(a)
c1 = np.array([4, 1, 1, 3])
c2 = np.array([2, 2, 0, 1])
assert to_list(b[c1, c2]) == to_list(a[c1, c2])
assert b.to_typetracer()[c1, c2].form == b[c1, c2].form
c = np.array([False, False, True, True, False, True, True])
assert to_list(b[c]) == to_list(a[c])
assert b.to_typetracer()[c].form == b[c].form
c = np.array([], dtype=np.int64)
assert to_list(b[c]) == to_list(a[c])
c1 = np.array([], dtype=np.int64)
c2 = np.array([], dtype=np.int64)
assert to_list(b[c1, c2]) == to_list(a[c1, c2])
assert b.to_typetracer()[c1, c2].form == b[c1, c2].form
a = np.arange(7 * 5).reshape(7, 5)
b = ak.contents.NumpyArray(a)
c = np.array([2, 0, 0, 1])
assert to_list(b[1:4, c]) == to_list(a[1:4, c])
assert to_list(b[c, 1:4]) == to_list(a[c, 1:4])
assert to_list(b[1:4, np.newaxis, c]) == to_list(a[1:4, np.newaxis, c])
assert to_list(b[c, np.newaxis, 1:4]) == to_list(a[c, np.newaxis, 1:4])
assert to_list(b[1:4, np.newaxis, np.newaxis, c]) == to_list(
a[1:4, np.newaxis, np.newaxis, c]
)
assert to_list(b[c, np.newaxis, np.newaxis, 1:4]) == to_list(
a[c, np.newaxis, np.newaxis, 1:4]
)
assert to_list(b[Ellipsis, c]) == to_list(a[Ellipsis, c])
assert to_list(b[c, Ellipsis]) == to_list(a[c, Ellipsis])
def test_numpyarray_getitem_next_2():
a = np.arange(7 * 5).reshape(7, 5)
b = ak.contents.NumpyArray(a)
c1 = np.array([[4, 1], [1, 3], [0, 4]])
c2 = np.array([[2, 2], [0, 1], [1, 3]])
assert to_list(b[c1, c2]) == to_list(a[c1, c2])
c = a % 2 == 0 # two dimensional
assert to_list(b[c]) == to_list(a[c])
assert to_list(b[c,]) == to_list(a[c,])
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