# BSD 3-Clause License; see https://github.com/scikit-hep/awkward/blob/main/LICENSE


import numpy as np
import pytest

import awkward as ak


def test_EmptyArray():
    a = ak.contents.emptyarray.EmptyArray()
    assert len(a) == 0
    with pytest.raises(IndexError):
        a[0,]
    assert isinstance(
        a[10:20,],
        ak.contents.emptyarray.EmptyArray,
    )
    assert len(a[10:20,]) == 0
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]


def test_NumpyArray_to_RegularArray():
    a = ak.operations.from_numpy(np.arange(2 * 3 * 5).reshape(2, 3, 5)).layout
    b = a.to_RegularArray()
    assert isinstance(b, ak.contents.RegularArray)
    assert len(b) == len(a) == 2
    assert b.size == 3
    assert isinstance(b.content, ak.contents.RegularArray)
    assert len(b.content) == 6
    assert b.content.size == 5
    assert isinstance(b.content.content, ak.contents.NumpyArray)
    assert len(b.content.content) == 30
    assert a.to_typetracer().to_RegularArray().form == b.form

    a = ak.operations.from_numpy(np.arange(2 * 0 * 5).reshape(2, 0, 5)).layout
    b = a.to_RegularArray()
    assert isinstance(b, ak.contents.RegularArray)
    assert len(b) == len(a) == 2
    assert b.size == 0
    assert isinstance(b.content, ak.contents.RegularArray)
    assert len(b.content) == 0
    assert b.content.size == 5
    assert isinstance(b.content.content, ak.contents.NumpyArray)
    assert len(b.content.content) == 0
    assert a.to_typetracer().to_RegularArray().form == b.form


def test_NumpyArray():
    a = ak.contents.numpyarray.NumpyArray(
        np.array([0.0, 1.1, 2.2, 3.3], dtype=np.float64)
    )
    assert len(a) == 4
    assert a[2,] == 2.2
    assert a[-2,] == 2.2
    assert type(a[2,]) is np.float64
    with pytest.raises(IndexError):
        a[4,]
    with pytest.raises(IndexError):
        a[-5,]
    assert isinstance(
        a[2:,],
        ak.contents.numpyarray.NumpyArray,
    )
    assert a[2:,][0,] == 2.2
    assert len(a[2:,]) == 2
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]

    b = ak.contents.numpyarray.NumpyArray(
        np.arange(2 * 3 * 5, dtype=np.int64).reshape(2, 3, 5)
    )
    assert len(b) == 2
    assert isinstance(
        b[1,],
        ak.contents.numpyarray.NumpyArray,
    )
    assert len(b[1,]) == 3
    with pytest.raises(IndexError):
        b[2,]
    assert b[1,][2,][0,] == 25
    assert len(b[1,][2,][1:,]) == 4
    assert b[1,][2,][1:,][2,] == 28
    with pytest.raises(IndexError):
        b["bad",]
    with pytest.raises(IndexError):
        b[["bad", "good", "ok"],]


def test_RegularArray_NumpyArray():
    # 6.6 is inaccessible
    a = ak.contents.regulararray.RegularArray(
        ak.contents.numpyarray.NumpyArray(
            np.array([0.0, 1.1, 2.2, 3.3, 4.4, 5.5, 6.6])
        ),
        3,
    )
    assert len(a) == 2
    assert isinstance(
        a[1,],
        ak.contents.numpyarray.NumpyArray,
    )
    assert a.to_typetracer()[1,].form == a[1,].form
    assert len(a[1,]) == 3
    assert a[1,][2,] == 5.5
    assert a[-1,][2,] == 5.5
    assert isinstance(
        a[1:2,],
        ak.contents.regulararray.RegularArray,
    )
    assert a.to_typetracer()[1:2,].form == a[1:2,].form
    assert len(a[1:,]) == 1
    assert len(a[1:100,]) == 1
    with pytest.raises(IndexError):
        a[2,]
    with pytest.raises(IndexError):
        a[-3,]
    with pytest.raises(IndexError):
        a[1,][3,]
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]

    b = ak.contents.regulararray.RegularArray(
        ak.contents.emptyarray.EmptyArray(), 0, zeros_length=10
    )
    assert len(b) == 10
    assert isinstance(
        b[5,],
        ak.contents.emptyarray.EmptyArray,
    )
    assert b.to_typetracer()[5,].form == b[5,].form
    assert len(b[5,]) == 0
    assert isinstance(
        b[7:,],
        ak.contents.regulararray.RegularArray,
    )
    assert b.to_typetracer()[7:,].form == b[7:,].form
    assert len(b[7:,]) == 3
    assert len(b[7:100,]) == 3
    with pytest.raises(IndexError):
        b["bad",]
    with pytest.raises(IndexError):
        b[["bad", "good", "ok"],]


def test_ListArray_NumpyArray():
    # 200 is inaccessible in stops
    # 6.6, 7.7, and 8.8 are inaccessible in content
    a = ak.contents.listarray.ListArray(
        ak.index.Index(np.array([4, 100, 1], dtype=np.int64)),
        ak.index.Index(np.array([7, 100, 3, 200], dtype=np.int64)),
        ak.contents.numpyarray.NumpyArray(
            np.array([6.6, 4.4, 5.5, 7.7, 1.1, 2.2, 3.3, 8.8])
        ),
    )
    assert len(a) == 3
    with pytest.raises(IndexError):
        a[3,]
    with pytest.raises(IndexError):
        a[-4,]
    assert isinstance(
        a[2,],
        ak.contents.numpyarray.NumpyArray,
    )
    assert a.to_typetracer()[2,].form == a[2,].form
    assert len(a[0,]) == 3
    assert len(a[1,]) == 0
    assert len(a[2,]) == 2
    assert len(a[-3,]) == 3
    assert len(a[-2,]) == 0
    assert len(a[-1,]) == 2
    assert a[0,][-1,] == 3.3
    assert a[2,][-1,] == 5.5
    assert isinstance(
        a[1:,],
        ak.contents.listarray.ListArray,
    )
    assert a.to_typetracer()[1:,].form == a[1:,].form
    assert len(a[1:,]) == 2
    assert len(a[-2:,]) == 2
    assert len(a[1:100,]) == 2
    assert len(a[-2:100,]) == 2
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]


def test_ListOffsetArray_NumpyArray():
    # 6.6 and 7.7 are inaccessible
    a = ak.contents.listoffsetarray.ListOffsetArray(
        ak.index.Index(np.array([1, 4, 4, 6])),
        ak.contents.numpyarray.NumpyArray(
            np.array([6.6, 1.1, 2.2, 3.3, 4.4, 5.5, 7.7])
        ),
    )
    assert len(a) == 3
    with pytest.raises(IndexError):
        a[3,]
    with pytest.raises(IndexError):
        a[-4,]
    assert isinstance(
        a[2,],
        ak.contents.numpyarray.NumpyArray,
    )
    assert a.to_typetracer()[2,].form == a[2,].form
    assert len(a[0,]) == 3
    assert len(a[1,]) == 0
    assert len(a[2,]) == 2
    assert len(a[-3,]) == 3
    assert len(a[-2,]) == 0
    assert len(a[-1,]) == 2
    assert a[0,][-1,] == 3.3
    assert a[2,][-1,] == 5.5
    assert isinstance(
        a[1:,],
        ak.contents.listarray.ListArray,
    )
    assert a.to_typetracer()[1:,].form == a[1:,].form
    assert len(a[1:,]) == 2
    assert len(a[-2:,]) == 2
    assert len(a[1:100,]) == 2
    assert len(a[-2:100,]) == 2
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]


def test_RecordArray_NumpyArray():
    # 5.5 is inaccessible
    a = ak.contents.recordarray.RecordArray(
        [
            ak.contents.numpyarray.NumpyArray(np.array([0, 1, 2, 3, 4])),
            ak.contents.numpyarray.NumpyArray(np.array([0.0, 1.1, 2.2, 3.3, 4.4, 5.5])),
        ],
        ["x", "y"],
    )
    assert len(a) == 5
    with pytest.raises(IndexError):
        a[5,]
    with pytest.raises(IndexError):
        a[-6,]
    assert isinstance(
        a[2,],
        ak.record.Record,
    )
    assert a.to_typetracer()[2,].array.form == a[2,].array.form
    assert a[2,]["y"] == 2.2
    assert a[-3,]["y"] == 2.2
    assert isinstance(
        a[2:,],
        ak.contents.indexedarray.IndexedArray,
    )
    assert a.to_typetracer()[2:,].form == a[2:,].form
    assert len(a[2:,]) == 3
    assert len(a[-3:,]) == 3
    assert len(a[2:100,]) == 3
    assert len(a[-3:100,]) == 3
    assert isinstance(
        a["y",],
        ak.contents.numpyarray.NumpyArray,
    )
    assert a.to_typetracer()["y",].form == a["y",].form
    assert a["y",][2,] == 2.2
    assert a["y",][-3,] == 2.2
    with pytest.raises(IndexError):
        a["z",]
    with pytest.raises(IndexError):
        a[["x", "z"],]
    assert len(a[["x", "y"],]) == 5

    # 5.5 is inaccessible
    b = ak.contents.recordarray.RecordArray(
        [
            ak.contents.numpyarray.NumpyArray(np.array([0, 1, 2, 3, 4])),
            ak.contents.numpyarray.NumpyArray(np.array([0.0, 1.1, 2.2, 3.3, 4.4, 5.5])),
        ],
        None,
    )
    assert len(b) == 5
    with pytest.raises(IndexError):
        b[5,]
    with pytest.raises(IndexError):
        b[-6,]
    assert isinstance(
        b[2,],
        ak.record.Record,
    )
    assert b.to_typetracer()[2,].array.form == b[2,].array.form
    assert b[2,]["1",] == 2.2
    assert b[-3,]["1",] == 2.2
    assert isinstance(
        b[2:,],
        ak.contents.indexedarray.IndexedArray,
    )
    assert b.to_typetracer()[2:,].form == b[2:,].form
    assert len(b[2:,]) == 3
    assert len(b[-3:,]) == 3
    assert len(b[2:100,]) == 3
    assert len(b[-3:100,]) == 3
    assert isinstance(
        b["1",],
        ak.contents.numpyarray.NumpyArray,
    )
    assert b.to_typetracer()["1",].form == b["1",].form
    assert b["1",][2,] == 2.2
    assert b["1",][-3,] == 2.2
    with pytest.raises(IndexError):
        a["2",]
    assert len(b[["0", "1"],]) == 5

    c = ak.contents.recordarray.RecordArray([], [], 10)
    assert len(c) == 10
    assert isinstance(
        c[5,],
        ak.record.Record,
    )
    assert c.to_typetracer()[5,].array.form == c[5,].array.form
    assert isinstance(
        c[7:,],
        ak.contents.indexedarray.IndexedArray,
    )
    assert c.to_typetracer()[7:,].form == c[7:,].form
    assert len(c[7:,]) == 3
    assert len(c[-3:,]) == 3
    with pytest.raises(IndexError):
        c["x",]

    d = ak.contents.recordarray.RecordArray([], None, 10)
    assert len(d) == 10
    assert isinstance(
        d[5,],
        ak.record.Record,
    )
    assert d.to_typetracer()[5,].array.form == d[5,].array.form
    assert isinstance(
        d[7:,],
        ak.contents.indexedarray.IndexedArray,
    )
    assert d.to_typetracer()[7:,].form == d[7:,].form
    assert len(d[7:,]) == 3
    assert len(d[-3:,]) == 3
    with pytest.raises(IndexError):
        d["0",]


def test_IndexedArray_NumpyArray():
    # 4.4 is inaccessible; 3.3 and 5.5 appear twice
    a = ak.contents.indexedarray.IndexedArray(
        ak.index.Index(np.array([2, 2, 0, 1, 4, 5, 4])),
        ak.contents.numpyarray.NumpyArray(np.array([1.1, 2.2, 3.3, 4.4, 5.5, 6.6])),
    )
    assert len(a) == 7
    assert a[0,] == 3.3
    assert a[1,] == 3.3
    assert a[2,] == 1.1
    assert a[3,] == 2.2
    assert a[4,] == 5.5
    assert a[5,] == 6.6
    assert a[6,] == 5.5
    assert a[-7,] == 3.3
    assert a[-6,] == 3.3
    assert a[-5,] == 1.1
    assert a[-4,] == 2.2
    assert a[-3,] == 5.5
    assert a[-2,] == 6.6
    assert a[-1,] == 5.5
    with pytest.raises(IndexError):
        a[7,]
    with pytest.raises(IndexError):
        a[-8,]
    assert isinstance(
        a[3:,],
        ak.contents.indexedarray.IndexedArray,
    )
    assert a.to_typetracer()[3:,].form == a[3:,].form
    assert len(a[3:,]) == 4
    assert len(a[-4:,]) == 4
    assert len(a[3:100,]) == 4
    assert len(a[-4:100,]) == 4
    assert a[3:,][1,] == 5.5
    assert a[-4:,][1,] == 5.5
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]


def test_IndexedOptionArray_NumpyArray():
    # 1.1 and 4.4 are inaccessible; 3.3 appears twice
    a = ak.contents.indexedoptionarray.IndexedOptionArray(
        ak.index.Index(np.array([2, 2, -1, 1, -1, 5, 4])),
        ak.contents.numpyarray.NumpyArray(np.array([1.1, 2.2, 3.3, 4.4, 5.5, 6.6])),
    )
    assert len(a) == 7
    assert a[0,] == 3.3
    assert a[1,] == 3.3
    assert a[2,] is None
    assert a[3,] == 2.2
    assert a[4,] is None
    assert a[5,] == 6.6
    assert a[6,] == 5.5
    assert a[-7,] == 3.3
    assert a[-6,] == 3.3
    assert a[-5,] is None
    assert a[-4,] == 2.2
    assert a[-3,] is None
    assert a[-2,] == 6.6
    assert a[-1,] == 5.5
    with pytest.raises(IndexError):
        a[7,]
    with pytest.raises(IndexError):
        a[-8,]
    assert isinstance(
        a[3:,],
        ak.contents.indexedoptionarray.IndexedOptionArray,
    )
    assert a.to_typetracer()[3:,].form == a[3:,].form
    assert len(a[3:,]) == 4
    assert len(a[-4:,]) == 4
    assert len(a[3:100,]) == 4
    assert len(a[-4:100,]) == 4
    assert a[3:,][1,] is None
    assert a[-4:,][1,] is None
    assert a[3:,][2,] == 6.6
    assert a[-4:,][2,] == 6.6
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]


def test_ByteMaskedArray_NumpyArray():
    # 2.2, 4.4, and 6.6 are inaccessible
    a = ak.contents.bytemaskedarray.ByteMaskedArray(
        ak.index.Index(np.array([1, 0, 1, 0, 1], dtype=np.int8)),
        ak.contents.numpyarray.NumpyArray(np.array([1.1, 2.2, 3.3, 4.4, 5.5, 6.6])),
        valid_when=True,
    )
    assert len(a) == 5
    with pytest.raises(IndexError):
        a[5,]
    with pytest.raises(IndexError):
        a[-6,]
    assert a[0,] == 1.1
    assert a[1,] is None
    assert a[2,] == 3.3
    assert a[3,] is None
    assert a[4,] == 5.5
    assert a[-5,] == 1.1
    assert a[-4,] is None
    assert a[-3,] == 3.3
    assert a[-2,] is None
    assert a[-1,] == 5.5
    assert isinstance(
        a[2:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert a.to_typetracer()[2:,].form == a[2:,].form
    assert len(a[2:,]) == 3
    assert len(a[-3:,]) == 3
    assert len(a[2:100,]) == 3
    assert len(a[-3:100,]) == 3
    assert a[2:,][1,] is None
    assert a[-3:,][1,] is None
    assert a[2:,][2,] == 5.5
    assert a[-3:,][2,] == 5.5
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]

    # 2.2, 4.4, and 6.6 are inaccessible
    b = ak.contents.bytemaskedarray.ByteMaskedArray(
        ak.index.Index(np.array([0, 1, 0, 1, 0], dtype=np.int8)),
        ak.contents.numpyarray.NumpyArray(np.array([1.1, 2.2, 3.3, 4.4, 5.5, 6.6])),
        valid_when=False,
    )
    assert len(b) == 5
    with pytest.raises(IndexError):
        b[5,]
    with pytest.raises(IndexError):
        b[-6,]
    assert b[0,] == 1.1
    assert b[1,] is None
    assert b[2,] == 3.3
    assert b[3,] is None
    assert b[4,] == 5.5
    assert b[-5,] == 1.1
    assert b[-4,] is None
    assert b[-3,] == 3.3
    assert b[-2,] is None
    assert b[-1,] == 5.5
    assert isinstance(
        b[2:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert b.to_typetracer()[2:,].form == b[2:,].form
    assert len(b[2:,]) == 3
    assert len(b[-3:,]) == 3
    assert len(b[2:100,]) == 3
    assert len(b[-3:100,]) == 3
    assert b[2:,][1,] is None
    assert b[-3:,][1,] is None
    assert b[2:,][2,] == 5.5
    assert b[-3:,][2,] == 5.5
    with pytest.raises(IndexError):
        b["bad",]
    with pytest.raises(IndexError):
        b[["bad", "good", "ok"],]


def test_BitMaskedArray_NumpyArray():
    # 4.0, 5.0, 6.0, 7.0, 2.2, 4.4, and 6.6 are inaccessible
    a = ak.contents.bitmaskedarray.BitMaskedArray(
        ak.index.Index(
            np.packbits(
                np.array(
                    [
                        1,
                        1,
                        1,
                        1,
                        0,
                        0,
                        0,
                        0,
                        1,
                        0,
                        1,
                        0,
                        1,
                    ],
                    dtype=np.uint8,
                )
            )
        ),
        ak.contents.numpyarray.NumpyArray(
            np.array(
                [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 1.1, 2.2, 3.3, 4.4, 5.5, 6.6]
            )
        ),
        valid_when=True,
        length=13,
        lsb_order=False,
    )
    assert len(a) == 13
    with pytest.raises(IndexError):
        a[13,]
    with pytest.raises(IndexError):
        a[-14,]
    assert a[0,] == 0.0
    assert a[1,] == 1.0
    assert a[2,] == 2.0
    assert a[3,] == 3.0
    assert a[4,] is None
    assert a[5,] is None
    assert a[6,] is None
    assert a[7,] is None
    assert a[8,] == 1.1
    assert a[9,] is None
    assert a[10,] == 3.3
    assert a[11,] is None
    assert a[12,] == 5.5
    assert a[-13,] == 0.0
    assert a[-12,] == 1.0
    assert a[-11,] == 2.0
    assert a[-10,] == 3.0
    assert a[-9,] is None
    assert a[-8,] is None
    assert a[-7,] is None
    assert a[-6,] is None
    assert a[-5,] == 1.1
    assert a[-4,] is None
    assert a[-3,] == 3.3
    assert a[-2,] is None
    assert a[-1,] == 5.5

    assert isinstance(
        a[5:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert a.to_typetracer()[5:,].form == a[5:,].form
    assert len(a[5:,]) == 8
    assert len(a[-8:,]) == 8
    assert len(a[5:100,]) == 8
    assert len(a[-8:100,]) == 8
    assert a[5:,][2,] is None
    assert a[5:,][3,] == 1.1
    assert a[-8:,][2,] is None
    assert a[-8:,][3,] == 1.1
    with pytest.raises(IndexError):
        a["bad",]

    # 4.0, 5.0, 6.0, 7.0, 2.2, 4.4, and 6.6 are inaccessible
    b = ak.contents.bitmaskedarray.BitMaskedArray(
        ak.index.Index(
            np.packbits(
                np.array(
                    [
                        0,
                        0,
                        0,
                        0,
                        1,
                        1,
                        1,
                        1,
                        0,
                        1,
                        0,
                        1,
                        0,
                    ],
                    dtype=np.uint8,
                )
            )
        ),
        ak.contents.numpyarray.NumpyArray(
            np.array(
                [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 1.1, 2.2, 3.3, 4.4, 5.5, 6.6]
            )
        ),
        valid_when=False,
        length=13,
        lsb_order=False,
    )
    assert len(b) == 13
    with pytest.raises(IndexError):
        b[13,]
    with pytest.raises(IndexError):
        b[-14,]
    assert b[0,] == 0.0
    assert b[1,] == 1.0
    assert b[2,] == 2.0
    assert b[3,] == 3.0
    assert b[4,] is None
    assert b[5,] is None
    assert b[6,] is None
    assert b[7,] is None
    assert b[8,] == 1.1
    assert b[9,] is None
    assert b[10,] == 3.3
    assert b[11,] is None
    assert b[12,] == 5.5
    assert b[-13,] == 0.0
    assert b[-12,] == 1.0
    assert b[-11,] == 2.0
    assert b[-10,] == 3.0
    assert b[-9,] is None
    assert b[-8,] is None
    assert b[-7,] is None
    assert b[-6,] is None
    assert b[-5,] == 1.1
    assert b[-4,] is None
    assert b[-3,] == 3.3
    assert b[-2,] is None
    assert b[-1,] == 5.5
    assert isinstance(
        b[5:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert b.to_typetracer()[5:,].form == b[5:,].form
    assert len(b[5:,]) == 8
    assert len(b[-8:,]) == 8
    assert len(b[5:100,]) == 8
    assert len(b[-8:100,]) == 8
    assert b[5:,][2,] is None
    assert b[5:,][3,] == 1.1
    assert b[-8:,][2,] is None
    assert b[-8:,][3,] == 1.1
    with pytest.raises(IndexError):
        b["bad",]

    # 4.0, 5.0, 6.0, 7.0, 2.2, 4.4, and 6.6 are inaccessible
    c = ak.contents.bitmaskedarray.BitMaskedArray(
        ak.index.Index(
            np.packbits(
                np.array(
                    [
                        0,
                        0,
                        0,
                        0,
                        1,
                        1,
                        1,
                        1,
                        0,
                        0,
                        0,
                        1,
                        0,
                        1,
                        0,
                        1,
                    ],
                    dtype=np.uint8,
                )
            )
        ),
        ak.contents.numpyarray.NumpyArray(
            np.array(
                [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 1.1, 2.2, 3.3, 4.4, 5.5, 6.6]
            )
        ),
        valid_when=True,
        length=13,
        lsb_order=True,
    )
    assert len(c) == 13
    with pytest.raises(IndexError):
        c[13,]
    with pytest.raises(IndexError):
        c[-14,]
    assert c[0,] == 0.0
    assert c[1,] == 1.0
    assert c[2,] == 2.0
    assert c[3,] == 3.0
    assert c[4,] is None
    assert c[5,] is None
    assert c[6,] is None
    assert c[7,] is None
    assert c[8,] == 1.1
    assert c[9,] is None
    assert c[10,] == 3.3
    assert c[11,] is None
    assert c[12,] == 5.5
    assert c[-13,] == 0.0
    assert c[-12,] == 1.0
    assert c[-11,] == 2.0
    assert c[-10,] == 3.0
    assert c[-9,] is None
    assert c[-8,] is None
    assert c[-7,] is None
    assert c[-6,] is None
    assert c[-5,] == 1.1
    assert c[-4,] is None
    assert c[-3,] == 3.3
    assert c[-2,] is None
    assert c[-1,] == 5.5
    assert isinstance(
        c[5:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert c.to_typetracer()[5:,].form == c[5:,].form
    assert len(c[5:,]) == 8
    assert len(c[-8:,]) == 8
    assert len(c[5:100,]) == 8
    assert len(c[-8:100,]) == 8
    assert c[5:,][2,] is None
    assert c[5:,][3,] == 1.1
    assert c[-8:,][2,] is None
    assert c[-8:,][3,] == 1.1
    with pytest.raises(IndexError):
        c["bad",]

    # 4.0, 5.0, 6.0, 7.0, 2.2, 4.4, and 6.6 are inaccessible
    d = ak.contents.bitmaskedarray.BitMaskedArray(
        ak.index.Index(
            np.packbits(
                np.array(
                    [
                        1,
                        1,
                        1,
                        1,
                        0,
                        0,
                        0,
                        0,
                        0,
                        0,
                        0,
                        0,
                        1,
                        0,
                        1,
                        0,
                    ],
                    dtype=np.uint8,
                )
            )
        ),
        ak.contents.numpyarray.NumpyArray(
            np.array(
                [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 1.1, 2.2, 3.3, 4.4, 5.5, 6.6]
            )
        ),
        valid_when=False,
        length=13,
        lsb_order=True,
    )
    assert len(d) == 13
    with pytest.raises(IndexError):
        d[13,]
    with pytest.raises(IndexError):
        d[-14,]
    assert d[0,] == 0.0
    assert d[1,] == 1.0
    assert d[2,] == 2.0
    assert d[3,] == 3.0
    assert d[4,] is None
    assert d[5,] is None
    assert d[6,] is None
    assert d[7,] is None
    assert d[8,] == 1.1
    assert d[9,] is None
    assert d[10,] == 3.3
    assert d[11,] is None
    assert d[12,] == 5.5
    assert d[-13,] == 0.0
    assert d[-12,] == 1.0
    assert d[-11,] == 2.0
    assert d[-10,] == 3.0
    assert d[-9,] is None
    assert d[-8,] is None
    assert d[-7,] is None
    assert d[-6,] is None
    assert d[-5,] == 1.1
    assert d[-4,] is None
    assert d[-3,] == 3.3
    assert d[-2,] is None
    assert d[-1,] == 5.5
    assert isinstance(
        d[5:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert d.to_typetracer()[5:,].form == d[5:,].form
    assert len(d[5:,]) == 8
    assert len(d[-8:,]) == 8
    assert len(d[5:100,]) == 8
    assert len(d[-8:100,]) == 8
    assert d[5:,][2,] is None
    assert d[5:,][3,] == 1.1
    assert d[-8:,][2,] is None
    assert d[-8:,][3,] == 1.1
    with pytest.raises(IndexError):
        d["bad",]


def test_UnmaskedArray_NumpyArray():
    a = ak.contents.unmaskedarray.UnmaskedArray(
        ak.contents.numpyarray.NumpyArray(
            np.array([0.0, 1.1, 2.2, 3.3], dtype=np.float64)
        )
    )
    assert len(a) == 4
    assert a[2,] == 2.2
    assert a[-2,] == 2.2
    assert type(a[2,]) is np.float64
    with pytest.raises(IndexError):
        a[4,]
    with pytest.raises(IndexError):
        a[-5,]
    assert isinstance(
        a[2:,],
        ak.contents.unmaskedarray.UnmaskedArray,
    )
    assert a.to_typetracer()[2:,].form == a[2:,].form
    assert a[2:,][0,] == 2.2
    assert len(a[2:,]) == 2
    with pytest.raises(IndexError):
        a["bad",]


def test_UnionArray_NumpyArray():
    # 100 is inaccessible in index
    # 1.1 is inaccessible in contents[1]
    a = ak.contents.unionarray.UnionArray.simplified(
        ak.index.Index(np.array([1, 1, 0, 0, 1, 0, 1], dtype=np.int8)),
        ak.index.Index(np.array([4, 3, 0, 1, 2, 2, 4, 100])),
        [
            ak.contents.numpyarray.NumpyArray(np.array([1, 2, 3])),
            ak.contents.numpyarray.NumpyArray(np.array([1.1, 2.2, 3.3, 4.4, 5.5])),
        ],
    )
    assert len(a) == 7
    with pytest.raises(IndexError):
        a[7,]
    with pytest.raises(IndexError):
        a[-8,]
    assert a[0,] == 5.5
    assert a[1,] == 4.4
    assert a[2,] == 1.0
    assert a[3,] == 2.0
    assert a[4,] == 3.3
    assert a[5,] == 3.0
    assert a[6,] == 5.5
    assert a[-7,] == 5.5
    assert a[-6,] == 4.4
    assert a[-5,] == 1.0
    assert a[-4,] == 2.0
    assert a[-3,] == 3.3
    assert a[-2,] == 3.0
    assert a[-1,] == 5.5
    assert a.to_typetracer()[3:,].form == a[3:,].form
    assert len(a[3:,]) == 4
    assert len(a[-4:,]) == 4
    assert len(a[3:100,]) == 4
    assert len(a[-4:100,]) == 4
    assert a[3:,][1,] == 3.3
    assert a[3:,][2,] == 3.0
    assert a[-4:,][1,] == 3.3
    assert a[-4:,][2,] == 3.0
    with pytest.raises(IndexError):
        a["bad",]
    with pytest.raises(IndexError):
        a[["bad", "good", "ok"],]


def test_RegularArray_RecordArray_NumpyArray():
    # 6.6 is inaccessible
    a = ak.contents.regulararray.RegularArray(
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array([0.0, 1.1, 2.2, 3.3, 4.4, 5.5, 6.6])
                )
            ],
            ["nest"],
        ),
        3,
    )
    assert len(a["nest",]) == 2
    assert isinstance(
        a["nest",][1,],
        ak.contents.numpyarray.NumpyArray,
    )
    assert a.to_typetracer()["nest",][1,].form == a["nest",][1,].form
    assert len(a["nest",][1,]) == 3
    assert a["nest",][1,][2,] == 5.5
    assert a["nest",][-1,][2,] == 5.5
    assert isinstance(
        a["nest",][1:2,],
        ak.contents.regulararray.RegularArray,
    )
    assert a.to_typetracer()["nest",][1:2,].form == a["nest",][1:2,].form
    assert len(a["nest",][1:,]) == 1
    assert len(a["nest",][1:100,]) == 1
    with pytest.raises(IndexError):
        a["nest",][2,]
    with pytest.raises(IndexError):
        a["nest",][-3,]
    with pytest.raises(IndexError):
        a["nest",][1,][3,]
    with pytest.raises(IndexError):
        a["nest",]["bad",]

    b = ak.contents.regulararray.RegularArray(
        ak.contents.recordarray.RecordArray(
            [ak.contents.emptyarray.EmptyArray()], ["nest"]
        ),
        0,
        zeros_length=10,
    )
    assert len(b["nest",]) == 10
    assert isinstance(
        b["nest",][5,],
        ak.contents.emptyarray.EmptyArray,
    )
    assert b.to_typetracer()["nest",][5,].form == b["nest",][5,].form
    assert len(b["nest",][5,]) == 0
    assert isinstance(
        b["nest",][7:,],
        ak.contents.regulararray.RegularArray,
    )
    assert b.to_typetracer()["nest",][7:,].form == b["nest",][7:,].form
    assert len(b["nest",][7:,]) == 3
    assert len(b["nest",][7:100,]) == 3
    with pytest.raises(IndexError):
        b["nest",]["bad",]


def test_ListArray_RecordArray_NumpyArray():
    # 200 is inaccessible in stops
    # 6.6, 7.7, and 8.8 are inaccessible in content
    a = ak.contents.listarray.ListArray(
        ak.index.Index(np.array([4, 100, 1])),
        ak.index.Index(np.array([7, 100, 3, 200])),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array([6.6, 4.4, 5.5, 7.7, 1.1, 2.2, 3.3, 8.8])
                )
            ],
            ["nest"],
        ),
    )
    assert len(a["nest",]) == 3
    with pytest.raises(IndexError):
        a["nest",][3,]
    with pytest.raises(IndexError):
        a["nest",][-4,]
    assert isinstance(
        a["nest",][2,],
        ak.contents.numpyarray.NumpyArray,
    )
    assert a.to_typetracer()["nest",][2,].form == a["nest",][2,].form
    assert len(a["nest",][0,]) == 3
    assert len(a["nest",][1,]) == 0
    assert len(a["nest",][2,]) == 2
    assert len(a["nest",][-3,]) == 3
    assert len(a["nest",][-2,]) == 0
    assert len(a["nest",][-1,]) == 2
    assert a["nest",][0,][-1,] == 3.3
    assert a["nest",][2,][-1,] == 5.5
    assert isinstance(
        a["nest",][1:,],
        ak.contents.listarray.ListArray,
    )
    assert len(a["nest",][1:,]) == 2
    assert len(a["nest",][-2:,]) == 2
    assert len(a["nest",][1:100,]) == 2
    assert len(a["nest",][-2:100,]) == 2
    with pytest.raises(IndexError):
        a["nest",]["bad",]


def test_ListOffsetArray_RecordArray_NumpyArray():
    # 6.6 and 7.7 are inaccessible
    a = ak.contents.listoffsetarray.ListOffsetArray(
        ak.index.Index(np.array([1, 4, 4, 6])),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array([6.6, 1.1, 2.2, 3.3, 4.4, 5.5, 7.7])
                )
            ],
            ["nest"],
        ),
    )
    assert len(a["nest",]) == 3
    with pytest.raises(IndexError):
        a["nest",][3,]
    with pytest.raises(IndexError):
        a["nest",][-4,]
    assert isinstance(
        a["nest",][2,],
        ak.contents.numpyarray.NumpyArray,
    )
    assert a.to_typetracer()["nest",][2,].form == a["nest",][2,].form
    assert len(a["nest",][0,]) == 3
    assert len(a["nest",][1,]) == 0
    assert len(a["nest",][2,]) == 2
    assert len(a["nest",][-3,]) == 3
    assert len(a["nest",][-2,]) == 0
    assert len(a["nest",][-1,]) == 2
    assert a["nest",][0,][-1,] == 3.3
    assert a["nest",][2,][-1,] == 5.5
    assert isinstance(
        a["nest",][1:,],
        ak.contents.listarray.ListArray,
    )
    assert a.to_typetracer()["nest",][1:,].form == a["nest",][1:,].form
    assert len(a["nest",][1:,]) == 2
    assert len(a["nest",][-2:,]) == 2
    assert len(a["nest",][1:100,]) == 2
    assert len(a["nest",][-2:100,]) == 2
    with pytest.raises(IndexError):
        a["nest",]["bad",]


def test_IndexedArray_RecordArray_NumpyArray():
    # 4.4 is inaccessible; 3.3 and 5.5 appear twice
    a = ak.contents.indexedarray.IndexedArray(
        ak.index.Index(np.array([2, 2, 0, 1, 4, 5, 4])),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array([1.1, 2.2, 3.3, 4.4, 5.5, 6.6])
                )
            ],
            ["nest"],
        ),
    )
    assert len(a["nest",]) == 7
    assert a["nest",][0,] == 3.3
    assert a["nest",][1,] == 3.3
    assert a["nest",][2,] == 1.1
    assert a["nest",][3,] == 2.2
    assert a["nest",][4,] == 5.5
    assert a["nest",][5,] == 6.6
    assert a["nest",][6,] == 5.5
    assert a["nest",][-7,] == 3.3
    assert a["nest",][-6,] == 3.3
    assert a["nest",][-5,] == 1.1
    assert a["nest",][-4,] == 2.2
    assert a["nest",][-3,] == 5.5
    assert a["nest",][-2,] == 6.6
    assert a["nest",][-1,] == 5.5
    with pytest.raises(IndexError):
        a["nest",][7,]
    with pytest.raises(IndexError):
        a["nest",][-8,]
    assert isinstance(
        a["nest",][3:,],
        ak.contents.indexedarray.IndexedArray,
    )
    assert a.to_typetracer()["nest",][3:,].form == a["nest",][3:,].form
    assert len(a["nest",][3:,]) == 4
    assert len(a["nest",][-4:,]) == 4
    assert len(a["nest",][3:100,]) == 4
    assert len(a["nest",][-4:100,]) == 4
    assert a["nest",][3:,][1,] == 5.5
    assert a["nest",][-4:,][1,] == 5.5
    with pytest.raises(IndexError):
        a["nest",]["bad",]


def test_IndexedOptionArray_RecordArray_NumpyArray():
    # 1.1 and 4.4 are inaccessible; 3.3 appears twice
    a = ak.contents.indexedoptionarray.IndexedOptionArray(
        ak.index.Index(np.array([2, 2, -1, 1, -1, 5, 4])),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array([1.1, 2.2, 3.3, 4.4, 5.5, 6.6])
                )
            ],
            ["nest"],
        ),
    )
    assert len(a["nest",]) == 7
    assert a["nest",][0,] == 3.3
    assert a["nest",][1,] == 3.3
    assert a["nest",][2,] is None
    assert a["nest",][3,] == 2.2
    assert a["nest",][4,] is None
    assert a["nest",][5,] == 6.6
    assert a["nest",][6,] == 5.5
    assert a["nest",][-7,] == 3.3
    assert a["nest",][-6,] == 3.3
    assert a["nest",][-5,] is None
    assert a["nest",][-4,] == 2.2
    assert a["nest",][-3,] is None
    assert a["nest",][-2,] == 6.6
    assert a["nest",][-1,] == 5.5
    with pytest.raises(IndexError):
        a["nest",][7,]
    with pytest.raises(IndexError):
        a["nest",][-8,]
    assert isinstance(
        a["nest",][3:,],
        ak.contents.indexedoptionarray.IndexedOptionArray,
    )
    assert a.to_typetracer()["nest",][3:,].form == a["nest",][3:,].form
    assert len(a["nest",][3:,]) == 4
    assert len(a["nest",][-4:,]) == 4
    assert len(a["nest",][3:100,]) == 4
    assert len(a["nest",][-4:100,]) == 4
    assert a["nest",][3:,][1,] is None
    assert a["nest",][-4:,][1,] is None
    assert a["nest",][3:,][2,] == 6.6
    assert a["nest",][-4:,][2,] == 6.6
    with pytest.raises(IndexError):
        a["nest",]["bad",]


def test_ByteMaskedArray_RecordArray_NumpyArray():
    # 2.2, 4.4, and 6.6 are inaccessible
    a = ak.contents.bytemaskedarray.ByteMaskedArray(
        ak.index.Index(np.array([1, 0, 1, 0, 1], dtype=np.int8)),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array([1.1, 2.2, 3.3, 4.4, 5.5, 6.6])
                )
            ],
            ["nest"],
        ),
        valid_when=True,
    )
    assert len(a["nest",]) == 5
    with pytest.raises(IndexError):
        a["nest",][5,]
    with pytest.raises(IndexError):
        a["nest",][-6,]
    assert a["nest",][0,] == 1.1
    assert a["nest",][1,] is None
    assert a["nest",][2,] == 3.3
    assert a["nest",][3,] is None
    assert a["nest",][4,] == 5.5
    assert a["nest",][-5,] == 1.1
    assert a["nest",][-4,] is None
    assert a["nest",][-3,] == 3.3
    assert a["nest",][-2,] is None
    assert a["nest",][-1,] == 5.5
    assert isinstance(
        a["nest",][2:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert a.to_typetracer()["nest",][2:,].form == a["nest",][2:,].form
    assert len(a["nest",][2:,]) == 3
    assert len(a["nest",][-3:,]) == 3
    assert len(a["nest",][2:100,]) == 3
    assert len(a["nest",][-3:100,]) == 3
    assert a["nest",][2:,][1,] is None
    assert a["nest",][-3:,][1,] is None
    assert a["nest",][2:,][2,] == 5.5
    assert a["nest",][-3:,][2,] == 5.5
    with pytest.raises(IndexError):
        a["nest",]["bad",]

    # 2.2, 4.4, and 6.6 are inaccessible
    b = ak.contents.bytemaskedarray.ByteMaskedArray(
        ak.index.Index(np.array([0, 1, 0, 1, 0], dtype=np.int8)),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array([1.1, 2.2, 3.3, 4.4, 5.5, 6.6])
                )
            ],
            ["nest"],
        ),
        valid_when=False,
    )
    assert len(b["nest",]) == 5
    with pytest.raises(IndexError):
        b["nest",][5,]
    with pytest.raises(IndexError):
        b["nest",][-6,]
    assert b["nest",][0,] == 1.1
    assert b["nest",][1,] is None
    assert b["nest",][2,] == 3.3
    assert b["nest",][3,] is None
    assert b["nest",][4,] == 5.5
    assert b["nest",][-5,] == 1.1
    assert b["nest",][-4,] is None
    assert b["nest",][-3,] == 3.3
    assert b["nest",][-2,] is None
    assert b["nest",][-1,] == 5.5
    assert isinstance(
        b["nest",][2:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert b.to_typetracer()["nest",][2:,].form == b["nest",][2:,].form
    assert len(b["nest",][2:,]) == 3
    assert len(b["nest",][-3:,]) == 3
    assert len(b["nest",][2:100,]) == 3
    assert len(b["nest",][-3:100,]) == 3
    assert b["nest",][2:,][1,] is None
    assert b["nest",][-3:,][1,] is None
    assert b["nest",][2:,][2,] == 5.5
    assert b["nest",][-3:,][2,] == 5.5
    with pytest.raises(IndexError):
        b["nest",]["bad",]


def test_BitMaskedArray_RecordArray_NumpyArray():
    # 4.0, 5.0, 6.0, 7.0, 2.2, 4.4, and 6.6 are inaccessible
    a = ak.contents.bitmaskedarray.BitMaskedArray(
        ak.index.Index(
            np.packbits(
                np.array(
                    [
                        True,
                        True,
                        True,
                        True,
                        False,
                        False,
                        False,
                        False,
                        True,
                        False,
                        True,
                        False,
                        True,
                    ]
                )
            )
        ),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array(
                        [
                            0.0,
                            1.0,
                            2.0,
                            3.0,
                            4.0,
                            5.0,
                            6.0,
                            7.0,
                            1.1,
                            2.2,
                            3.3,
                            4.4,
                            5.5,
                            6.6,
                        ]
                    )
                )
            ],
            ["nest"],
        ),
        valid_when=True,
        length=13,
        lsb_order=False,
    )
    assert len(a["nest"]) == 13
    with pytest.raises(IndexError):
        a["nest",][13,]
    with pytest.raises(IndexError):
        a["nest",][-14,]
    assert a["nest",][0,] == 0.0
    assert a["nest",][1,] == 1.0
    assert a["nest",][2,] == 2.0
    assert a["nest",][3,] == 3.0
    assert a["nest",][4,] is None
    assert a["nest",][5,] is None
    assert a["nest",][6,] is None
    assert a["nest",][7,] is None
    assert a["nest",][8,] == 1.1
    assert a["nest",][9,] is None
    assert a["nest",][10,] == 3.3
    assert a["nest",][11,] is None
    assert a["nest",][12,] == 5.5
    assert a["nest",][-13,] == 0.0
    assert a["nest",][-12,] == 1.0
    assert a["nest",][-11,] == 2.0
    assert a["nest",][-10,] == 3.0
    assert a["nest",][-9,] is None
    assert a["nest",][-8,] is None
    assert a["nest",][-7,] is None
    assert a["nest",][-6,] is None
    assert a["nest",][-5,] == 1.1
    assert a["nest",][-4,] is None
    assert a["nest",][-3,] == 3.3
    assert a["nest",][-2,] is None
    assert a["nest",][-1,] == 5.5
    assert isinstance(
        a["nest",][5:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert a.to_typetracer()["nest",][5:,].form == a["nest",][5:,].form
    assert len(a["nest",][5:,]) == 8
    assert len(a["nest",][-8:,]) == 8
    assert len(a["nest",][5:100,]) == 8
    assert len(a["nest",][-8:100,]) == 8
    assert a["nest",][5:,][2,] is None
    assert a["nest",][5:,][3,] == 1.1
    assert a["nest",][-8:,][2,] is None
    assert a["nest",][-8:,][3,] == 1.1
    with pytest.raises(IndexError):
        a["nest",]["bad",]

    # 4.0, 5.0, 6.0, 7.0, 2.2, 4.4, and 6.6 are inaccessible
    b = ak.contents.bitmaskedarray.BitMaskedArray(
        ak.index.Index(
            np.packbits(
                np.array(
                    [
                        0,
                        0,
                        0,
                        0,
                        1,
                        1,
                        1,
                        1,
                        0,
                        1,
                        0,
                        1,
                        0,
                    ],
                    dtype=np.uint8,
                )
            )
        ),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array(
                        [
                            0.0,
                            1.0,
                            2.0,
                            3.0,
                            4.0,
                            5.0,
                            6.0,
                            7.0,
                            1.1,
                            2.2,
                            3.3,
                            4.4,
                            5.5,
                            6.6,
                        ]
                    )
                )
            ],
            ["nest"],
        ),
        valid_when=False,
        length=13,
        lsb_order=False,
    )
    assert len(b["nest",]) == 13
    with pytest.raises(IndexError):
        b["nest",][13,]
    with pytest.raises(IndexError):
        b["nest",][-14,]
    assert b["nest",][0,] == 0.0
    assert b["nest",][1,] == 1.0
    assert b["nest",][2,] == 2.0
    assert b["nest",][3,] == 3.0
    assert b["nest",][4,] is None
    assert b["nest",][5,] is None
    assert b["nest",][6,] is None
    assert b["nest",][7,] is None
    assert b["nest",][8,] == 1.1
    assert b["nest",][9,] is None
    assert b["nest",][10,] == 3.3
    assert b["nest",][11,] is None
    assert b["nest",][12,] == 5.5
    assert b["nest",][-13,] == 0.0
    assert b["nest",][-12,] == 1.0
    assert b["nest",][-11,] == 2.0
    assert b["nest",][-10,] == 3.0
    assert b["nest",][-9,] is None
    assert b["nest",][-8,] is None
    assert b["nest",][-7,] is None
    assert b["nest",][-6,] is None
    assert b["nest",][-5,] == 1.1
    assert b["nest",][-4,] is None
    assert b["nest",][-3,] == 3.3
    assert b["nest",][-2,] is None
    assert b["nest",][-1,] == 5.5
    assert isinstance(
        b["nest",][5:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert b.to_typetracer()["nest",][5:,].form == b["nest",][5:,].form
    assert len(b["nest",][5:,]) == 8
    assert len(b["nest",][-8:,]) == 8
    assert len(b["nest",][5:100,]) == 8
    assert len(b["nest",][-8:100,]) == 8
    assert b["nest",][5:,][2,] is None
    assert b["nest",][5:,][3,] == 1.1
    assert b["nest",][-8:,][2,] is None
    assert b["nest",][-8:,][3,] == 1.1
    with pytest.raises(IndexError):
        b["nest",]["bad",]

    # 4.0, 5.0, 6.0, 7.0, 2.2, 4.4, and 6.6 are inaccessible
    c = ak.contents.bitmaskedarray.BitMaskedArray(
        ak.index.Index(
            np.packbits(
                np.array(
                    [
                        0,
                        0,
                        0,
                        0,
                        1,
                        1,
                        1,
                        1,
                        0,
                        0,
                        0,
                        1,
                        0,
                        1,
                        0,
                        1,
                    ],
                    dtype=np.uint8,
                )
            )
        ),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array(
                        [
                            0.0,
                            1.0,
                            2.0,
                            3.0,
                            4.0,
                            5.0,
                            6.0,
                            7.0,
                            1.1,
                            2.2,
                            3.3,
                            4.4,
                            5.5,
                            6.6,
                        ]
                    )
                )
            ],
            ["nest"],
        ),
        valid_when=True,
        length=13,
        lsb_order=True,
    )
    assert len(c["nest",]) == 13
    with pytest.raises(IndexError):
        c["nest",][13,]
    with pytest.raises(IndexError):
        c["nest",][-14,]
    assert c["nest",][0,] == 0.0
    assert c["nest",][1,] == 1.0
    assert c["nest",][2,] == 2.0
    assert c["nest",][3,] == 3.0
    assert c["nest",][4,] is None
    assert c["nest",][5,] is None
    assert c["nest",][6,] is None
    assert c["nest",][7,] is None
    assert c["nest",][8,] == 1.1
    assert c["nest",][9,] is None
    assert c["nest",][10,] == 3.3
    assert c["nest",][11,] is None
    assert c["nest",][12,] == 5.5
    assert c["nest",][-13,] == 0.0
    assert c["nest",][-12,] == 1.0
    assert c["nest",][-11,] == 2.0
    assert c["nest",][-10,] == 3.0
    assert c["nest",][-9,] is None
    assert c["nest",][-8,] is None
    assert c["nest",][-7,] is None
    assert c["nest",][-6,] is None
    assert c["nest",][-5,] == 1.1
    assert c["nest",][-4,] is None
    assert c["nest",][-3,] == 3.3
    assert c["nest",][-2,] is None
    assert c["nest",][-1,] == 5.5
    assert isinstance(
        c["nest",][5:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert c.to_typetracer()["nest",][5:,].form == c["nest",][5:,].form
    assert len(c["nest",][5:,]) == 8
    assert len(c["nest",][-8:,]) == 8
    assert len(c["nest",][5:100,]) == 8
    assert len(c["nest",][-8:100,]) == 8
    assert c["nest",][5:,][2,] is None
    assert c["nest",][5:,][3,] == 1.1
    assert c["nest",][-8:,][2,] is None
    assert c["nest",][-8:,][3,] == 1.1
    with pytest.raises(IndexError):
        c["nest",]["bad",]

    # 4.0, 5.0, 6.0, 7.0, 2.2, 4.4, and 6.6 are inaccessible
    d = ak.contents.bitmaskedarray.BitMaskedArray(
        ak.index.Index(
            np.packbits(
                np.array(
                    [
                        1,
                        1,
                        1,
                        1,
                        0,
                        0,
                        0,
                        0,
                        0,
                        0,
                        0,
                        0,
                        1,
                        0,
                        1,
                        0,
                    ],
                    dtype=np.uint8,
                )
            )
        ),
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array(
                        [
                            0.0,
                            1.0,
                            2.0,
                            3.0,
                            4.0,
                            5.0,
                            6.0,
                            7.0,
                            1.1,
                            2.2,
                            3.3,
                            4.4,
                            5.5,
                            6.6,
                        ]
                    )
                )
            ],
            ["nest"],
        ),
        valid_when=False,
        length=13,
        lsb_order=True,
    )
    assert len(d["nest",]) == 13
    with pytest.raises(IndexError):
        d["nest",][13,]
    with pytest.raises(IndexError):
        d["nest",][-14,]
    assert d["nest",][0,] == 0.0
    assert d["nest",][1,] == 1.0
    assert d["nest",][2,] == 2.0
    assert d["nest",][3,] == 3.0
    assert d["nest",][4,] is None
    assert d["nest",][5,] is None
    assert d["nest",][6,] is None
    assert d["nest",][7,] is None
    assert d["nest",][8,] == 1.1
    assert d["nest",][9,] is None
    assert d["nest",][10,] == 3.3
    assert d["nest",][11,] is None
    assert d["nest",][12,] == 5.5
    assert d["nest",][-13,] == 0.0
    assert d["nest",][-12,] == 1.0
    assert d["nest",][-11,] == 2.0
    assert d["nest",][-10,] == 3.0
    assert d["nest",][-9,] is None
    assert d["nest",][-8,] is None
    assert d["nest",][-7,] is None
    assert d["nest",][-6,] is None
    assert d["nest",][-5,] == 1.1
    assert d["nest",][-4,] is None
    assert d["nest",][-3,] == 3.3
    assert d["nest",][-2,] is None
    assert d["nest",][-1,] == 5.5
    assert isinstance(
        d["nest",][5:,],
        ak.contents.bytemaskedarray.ByteMaskedArray,
    )
    assert d.to_typetracer()["nest",][5:,].form == d["nest",][5:,].form
    assert len(d["nest",][5:,]) == 8
    assert len(d["nest",][-8:,]) == 8
    assert len(d["nest",][5:100,]) == 8
    assert len(d["nest",][-8:100,]) == 8
    assert d["nest",][5:,][2,] is None
    assert d["nest",][5:,][3,] == 1.1
    assert d["nest",][-8:,][2,] is None
    assert d["nest",][-8:,][3,] == 1.1
    with pytest.raises(IndexError):
        d["nest",]["bad",]


def test_UnmaskedArray_RecordArray_NumpyArray():
    a = ak.contents.unmaskedarray.UnmaskedArray(
        ak.contents.recordarray.RecordArray(
            [
                ak.contents.numpyarray.NumpyArray(
                    np.array([0.0, 1.1, 2.2, 3.3], dtype=np.float64)
                )
            ],
            ["nest"],
        )
    )
    assert len(a["nest",]) == 4
    assert a["nest",][2,] == 2.2
    assert a["nest",][-2,] == 2.2
    assert type(a["nest",][2,]) is np.float64
    with pytest.raises(IndexError):
        a["nest",][4,]
    with pytest.raises(IndexError):
        a["nest",][-5,]
    assert isinstance(
        a["nest",][2:,],
        ak.contents.unmaskedarray.UnmaskedArray,
    )
    assert a.to_typetracer()["nest",][2:,].form == a["nest",][2:,].form
    assert a["nest",][2:,][0,] == 2.2
    assert len(a["nest",][2:,]) == 2
    with pytest.raises(IndexError):
        a["nest",]["bad",]


def test_UnionArray_RecordArray_NumpyArray():
    # 100 is inaccessible in index
    # 1.1 is inaccessible in contents[1]
    a = ak.contents.unionarray.UnionArray.simplified(
        ak.index.Index(np.array([1, 1, 0, 0, 1, 0, 1], dtype=np.int8)),
        ak.index.Index(np.array([4, 3, 0, 1, 2, 2, 4, 100])),
        [
            ak.contents.recordarray.RecordArray(
                [ak.contents.numpyarray.NumpyArray(np.array([1, 2, 3]))], ["nest"]
            ),
            ak.contents.recordarray.RecordArray(
                [
                    ak.contents.numpyarray.NumpyArray(
                        np.array([1.1, 2.2, 3.3, 4.4, 5.5])
                    )
                ],
                ["nest"],
            ),
        ],
    )
    assert len(a["nest",]) == 7
    with pytest.raises(IndexError):
        a["nest",][7,]
    with pytest.raises(IndexError):
        a["nest",][-8,]
    assert a["nest",][0,] == 5.5
    assert a["nest",][1,] == 4.4
    assert a["nest",][2,] == 1.0
    assert a["nest",][3,] == 2.0
    assert a["nest",][4,] == 3.3
    assert a["nest",][5,] == 3.0
    assert a["nest",][6,] == 5.5
    assert a["nest",][-7,] == 5.5
    assert a["nest",][-6,] == 4.4
    assert a["nest",][-5,] == 1.0
    assert a["nest",][-4,] == 2.0
    assert a["nest",][-3,] == 3.3
    assert a["nest",][-2,] == 3.0
    assert a["nest",][-1,] == 5.5
    assert a.to_typetracer()["nest",][3:,].form == a["nest",][3:,].form
    assert len(a["nest",][3:,]) == 4
    assert len(a["nest",][-4:,]) == 4
    assert len(a["nest",][3:100,]) == 4
    assert len(a["nest",][-4:100,]) == 4
    assert a["nest",][3:,][1,] == 3.3
    assert a["nest",][3:,][2,] == 3.0
    assert a["nest",][-4:,][1,] == 3.3
    assert a["nest",][-4:,][2,] == 3.0
    with pytest.raises(IndexError):
        a["nest",]["bad",]
