test_generate.py

#!/usr/bin/env python

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

import collections
import unittest

import awkward

class S0(object):
    def __init__(self):
        pass
    def __eq__(self, other):
        return isinstance(other, S0)

class S1(object):
    def __init__(self, a, b):
        self.a, self.b = a, b
    def __eq__(self, other):
        return isinstance(other, S1) and self.a == other.a and self.b == other.b

class S2(object):
    def __init__(self, a, b):
        self.a, self.b = a, b
    def __eq__(self, other):
        return isinstance(other, S2) and self.a == other.a and self.b == other.b

T0 = collections.namedtuple("T0", [])
T1 = collections.namedtuple("T1", ["a", "b"])
T2 = collections.namedtuple("T2", ["a", "b"])

class Test(unittest.TestCase):
    def test_generate_runTest(self):
        pass

    def test_generate_empty(self):
        x = []
        assert awkward.fromiter(x).tolist() == x

        x = [None]
        assert awkward.fromiter(x).tolist() == x

        x = [None, None, None]
        assert awkward.fromiter(x).tolist() == x

    def test_generate_primitive(self):
        x = [False, True, True]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, 3]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1.1, 2.2, 3.3]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1.1j, 2.2j, 3.3j]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, 3]
        assert isinstance(awkward.fromiter(x).tolist()[0], int)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, 3.3]
        assert isinstance(awkward.fromiter(x).tolist()[0], float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_strings(self):
        x = [b"one", b"two", b"three"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", "two", "three"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_strings_dictencoding(self):
        x = [b"one", b"two", b"three"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", "two", "three"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [b"one", b"two", b"three"]
        assert awkward.fromiter(x, dictencoding=lambda x: True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=lambda x: True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=lambda x: True).tolist() == x

        x = ["one", "two", "three"]
        assert awkward.fromiter(x, dictencoding=lambda x: True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=lambda x: True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=lambda x: True).tolist() == x

    def test_generate_jagged(self):
        x = [[]]
        assert awkward.fromiter(x).tolist() == x

        x = [[], [], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[1.1, 2.2, 3.3], [], [4.4, 5.5]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [3.14], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[999], [], [999]]
        assert isinstance(awkward.fromiter(x).tolist()[0][0], int)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[999], [], [3.14]]
        assert isinstance(awkward.fromiter(x).tolist()[0][0], float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_multijagged(self):
        x = [[[]]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[[]], [], [[]]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [[]], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [[], [], []], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[[3.14]]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[[]], [], [[3.14]]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[[3.14]], [], [[]]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [[1], [2], [3]], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[[3.14]], [], [[3.14]]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[[999]], [], [[999]]]
        assert isinstance(awkward.fromiter(x).tolist()[0][0][0], int)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[[999]], [], [[3.14]]]
        assert isinstance(awkward.fromiter(x).tolist()[0][0][0], float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_table(self):
        x = [{"a": 1, "b": 1.1}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": 3.3}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": 3.3}]
        assert isinstance(awkward.fromiter(x).tolist()[0]["a"], int)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3.0, "b": 3.3}]
        assert isinstance(awkward.fromiter(x).tolist()[0]["a"], float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": "one"}, {"a": 2, "b": "two"}, {"a": 3, "b": "three"}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": b"one"}, {"a": 2, "b": b"two"}, {"a": 3, "b": b"three"}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": []}, {"a": 2, "b": [2.2]}, {"a": 3.0, "b": [3.3, 3.3]}]
        assert isinstance(awkward.fromiter(x).tolist()[0]["a"], float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": {"x": 1.1}}, {"a": 2, "b": {"x": 2.2}}, {"a": 3, "b": {"x": 3.3}}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        assert awkward.fromiter([{}]).tolist() == [None]
        assert awkward.fromiter([{}, {}, {}]).tolist() == [None, None, None]
        assert awkward.fromiter([{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {}]).tolist() == [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, None]
        assert awkward.fromiter([None, {"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {}]).tolist() == [None, {"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, None]
        assert awkward.fromiter([{"a": 1, "b": 1.1}, None, {"a": 2, "b": 2.2}, {}]).tolist() == [{"a": 1, "b": 1.1}, None, {"a": 2, "b": 2.2}, None]
        assert awkward.fromiter([{"a": 1, "b": 1.1}, {}, {"a": 2, "b": 2.2}]).tolist() == [{"a": 1, "b": 1.1}, None, {"a": 2, "b": 2.2}]
        assert awkward.fromiter([{}, {"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}]).tolist() == [None, {"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}]

    def test_generate_objects(self):
        x = [S1(1, 1.1)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3, 3.3)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3, 3.3)]
        assert isinstance(awkward.fromiter(x).tolist()[0].a, int)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3.0, 3.3)]
        assert isinstance(awkward.fromiter(x).tolist()[0].a, float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, "one"), S1(2, "two"), S1(3, "three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, b"one"), S1(2, b"two"), S1(3, b"three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, []), S1(2, [2.2]), S1(3.0, [3.3, 3.3])]
        assert isinstance(awkward.fromiter(x).tolist()[0].a, float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, {"x": 1.1}), S1(2, {"x": 2.2}), S1(3, {"x": 3.3})]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        assert awkward.fromiter([S0()]).tolist() == [S0()]
        assert awkward.fromiter([S0(), S0(), S0()]).tolist() == [S0(), S0(), S0()]
        assert awkward.fromiter([None, S0(), S0(), S0()]).tolist() == [None, S0(), S0(), S0()]
        assert awkward.fromiter([S0(), None, S0(), S0()]).tolist() == [S0(), None, S0(), S0()]
        assert awkward.fromiter([None, S0(), None, S0(), S0()]).tolist() == [None, S0(), None, S0(), S0()]

    def test_generate_namedtuples(self):
        x = [T1(1, 1.1)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3, 3.3)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3, 3.3)]
        assert isinstance(awkward.fromiter(x).tolist()[0].a, int)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3.0, 3.3)]
        assert isinstance(awkward.fromiter(x).tolist()[0].a, float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, "one"), T1(2, "two"), T1(3, "three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, b"one"), T1(2, b"two"), T1(3, b"three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, []), T1(2, [2.2]), T1(3.0, [3.3, 3.3])]
        assert isinstance(awkward.fromiter(x).tolist()[0].a, float)
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, {"x": 1.1}), T1(2, {"x": 2.2}), T1(3, {"x": 3.3})]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        assert awkward.fromiter([T0()]).tolist() == [T0()]
        assert awkward.fromiter([T0(), T0(), T0()]).tolist() == [T0(), T0(), T0()]
        assert awkward.fromiter([None, T0(), T0(), T0()]).tolist() == [None, T0(), T0(), T0()]
        assert awkward.fromiter([T0(), None, T0(), T0()]).tolist() == [T0(), None, T0(), T0()]
        assert awkward.fromiter([None, T0(), None, T0(), T0()]).tolist() == [None, T0(), None, T0(), T0()]

    def test_generate_primitive_primitive(self):
        x = [1, 2, True]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [True, 1, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, True, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, True, False]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [True, 1, 2, False]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, True, 2, False]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [False, 1, 2, True]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [False, True, 1, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [False, 1, True, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, True, None]
        assert awkward.fromiter(x).tolist() == x

        x = [1, True, None, 3]
        assert awkward.fromiter(x).tolist() == x

        x = [1, True, None, False]
        assert awkward.fromiter(x).tolist() == x

    def test_generate_primitive_strings(self):
        x = ["one", "two", 1]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, "one", "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", 1, "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, "one"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, "one", 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", 1, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_primitive_strings_dictencoding(self):
        x = ["one", "two", 1]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [1, "one", "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", 1, "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [1, 2, "one"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [1, "one", 2]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", 1, 2]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

    def test_generate_primitive_jagged(self):
        x = [1, 2, []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, [], 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, [3.14], 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], 1, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[3.14], 1, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, [], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, [3.14], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, [], [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], 1, []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[3.14], 1, []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], 1, [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [], 1]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[3.14], [], 1]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [3.14], 1]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_primitive_table(self):
        x = [999, {"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, 999, {"a": 2, "b": 2.2}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, 999]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, {"a": 999, "b": 3.14}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, {"a": 999, "b": 3.14}, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 999, "b": 3.14}, 1, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_primitive_objects(self):
        x = [999, S1(1, 1.1), S1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), 999, S1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), 999]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, S1(999, 3.14)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, S1(999, 3.14), 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(999, 3.14), 1, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_primitive_namedtuples(self):
        x = [999, T1(1, 1.1), T1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), 999, T1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), 999]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, 2, T1(999, 3.14)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [1, T1(999, 3.14), 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(999, 3.14), 1, 2]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_strings_strings(self):
        x = ["one", b"two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [b"one", "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_strings_strings_dictencoding(self):
        x = ["one", b"two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [b"one", "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

    def test_generate_strings_jagged(self):
        x = ["one", "two", []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", "two", [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", [], "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", [3.14], "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], "one", "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[3.14], "one", "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", [], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", [1.1], []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", [], [2.2]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", [1.1], [2.2]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], "one", []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[1.1], "one", []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], "one", [2.2]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[1.1], "one", [2.2]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [], "one"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[1.1], [], "one"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [2.2], "one"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[1.1], [2.2], "one"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_strings_jagged_dictencoding(self):
        x = ["one", "two", []]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", "two", [3.14]]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", [], "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", [3.14], "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[], "one", "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[3.14], "one", "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", [], []]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", [1.1], []]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", [], [2.2]]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", [1.1], [2.2]]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[], "one", []]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[1.1], "one", []]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[], "one", [2.2]]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[1.1], "one", [2.2]]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[], [], "one"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[1.1], [], "one"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[], [2.2], "one"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [[1.1], [2.2], "one"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

    def test_generate_strings_table(self):
        x = ["one", {"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, "one", {"a": 2, "b": 2.2}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, "one"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", "two", {"a": 1, "b": 1.1}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", {"a": 1, "b": 1.1}, "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, "one", "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_strings_table_dictencoding(self):
        x = ["one", {"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [{"a": 1, "b": 1.1}, "one", {"a": 2, "b": 2.2}]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, "one"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", "two", {"a": 1, "b": 1.1}]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", {"a": 1, "b": 1.1}, "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [{"a": 1, "b": 1.1}, "one", "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

    def test_generate_strings_objects(self):
        x = ["one", S1(1, 1.1), S1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), "one", S1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), "one"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", "two", S1(1, 1.1)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", S1(1, 1.1), "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), "one", "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_strings_objects_dictencoding(self):
        x = ["one", S1(1, 1.1), S1(2, 2.2)]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [S1(1, 1.1), "one", S1(2, 2.2)]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), "one"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", "two", S1(1, 1.1)]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", S1(1, 1.1), "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [S1(1, 1.1), "one", "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

    def test_generate_strings_namedtuples(self):
        x = ["one", T1(1, 1.1), T1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), "one", T1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), "one"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", "two", T1(1, 1.1)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = ["one", T1(1, 1.1), "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), "one", "two"]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_strings_namedtuples_dictencoding(self):
        x = ["one", T1(1, 1.1), T1(2, 2.2)]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [T1(1, 1.1), "one", T1(2, 2.2)]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), "one"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", "two", T1(1, 1.1)]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = ["one", T1(1, 1.1), "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

        x = [T1(1, 1.1), "one", "two"]
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x, dictencoding=True).tolist() == x

    def test_generate_jagged_jagged(self):
        x = [[[[[1]]]], [[[[2]]]]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[[[[1]]]], [[[[2]]]]]
        assert isinstance(awkward.fromiter(x).tolist()[0][0][0][0][0], int)

        x = [[[[[1]]]], [[[[2.2]]]]]
        assert isinstance(awkward.fromiter(x).tolist()[0][0][0][0][0], float)

        x = [[[[[1]]]], [[[[[2.2]]]]]]
        assert isinstance(awkward.fromiter(x).tolist()[0][0][0][0][0], int)

    def test_generate_jagged_table(self):
        x = [[], {"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, [], {"a": 2, "b": 2.2}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [3.14], {"a": 1, "b": 1.1}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], {"a": 1, "b": 1.1}, [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, [], [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_jagged_objects(self):
        x = [[], S1(1, 1.1), S1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), [], S1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [3.14], S1(1, 1.1)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], S1(1, 1.1), [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), [], [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_jagged_namedtuples(self):
        x = [[], T1(1, 1.1), T1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), [], T1(2, 2.2)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), []]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], [3.14], T1(1, 1.1)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [[], T1(1, 1.1), [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), [], [3.14]]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_table_table(self):
        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"x": 3, "y": 3.3}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_objects_objects(self):
        x = [S1(1, 1.1), S1(2, 2.2), S2(3, 3.3)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_namedtuples_namedtuples(self):
        x = [T1(1, 1.1), T1(2, 2.2), T2(3, 3.3)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_table_union(self):
        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": True}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": "three"}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": b"three"}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": b"three"}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": []}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": [3.14]}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [{"a": 1, "b": 1.1}, {"a": 2, "b": 2.2}, {"a": 3, "b": {"x": 999, "y": 3.14}}]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_objects_union(self):
        x = [S1(1, 1.1), S1(2, 2.2), S1(3, True)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3, "three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3, b"three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3, b"three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3, [])]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3, [3.14])]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [S1(1, 1.1), S1(2, 2.2), S1(3, S2(999, 3.14))]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

    def test_generate_namedtuples_union(self):
        x = [T1(1, 1.1), T1(2, 2.2), T1(3, True)]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3, "three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3, b"three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3, b"three")]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3, [])]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3, [3.14])]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x

        x = [T1(1, 1.1), T1(2, 2.2), T1(3, T2(999, 3.14))]
        assert awkward.fromiter(x).tolist() == x
        x.insert(1, None)
        assert awkward.fromiter(x).tolist() == x
        x.insert(0, None)
        assert awkward.fromiter(x).tolist() == x