/usr/lib/python3/dist-packages/ipykernel/tests/test_serialize.py is in python3-ipykernel 4.8.2-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | """test serialization tools"""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import pickle
from collections import namedtuple
from ipykernel.serialize import serialize_object, deserialize_object
from IPython.testing import decorators as dec
from ipykernel.pickleutil import CannedArray, CannedClass, interactive
def roundtrip(obj):
"""roundtrip an object through serialization"""
bufs = serialize_object(obj)
obj2, remainder = deserialize_object(bufs)
assert remainder == []
return obj2
SHAPES = ((100,), (1024,10), (10,8,6,5), (), (0,))
DTYPES = ('uint8', 'float64', 'int32', [('g', 'float32')], '|S10')
def new_array(shape, dtype):
import numpy
return numpy.random.random(shape).astype(dtype)
def test_roundtrip_simple():
for obj in [
'hello',
dict(a='b', b=10),
[1,2,'hi'],
(b'123', 'hello'),
]:
obj2 = roundtrip(obj)
assert obj == obj2
def test_roundtrip_nested():
for obj in [
dict(a=range(5), b={1:b'hello'}),
[range(5),[range(3),(1,[b'whoda'])]],
]:
obj2 = roundtrip(obj)
assert obj == obj2
def test_roundtrip_buffered():
for obj in [
dict(a=b"x"*1025),
b"hello"*500,
[b"hello"*501, 1,2,3]
]:
bufs = serialize_object(obj)
assert len(bufs) == 2
obj2, remainder = deserialize_object(bufs)
assert remainder == []
assert obj == obj2
def test_roundtrip_memoryview():
b = b'asdf' * 1025
view = memoryview(b)
bufs = serialize_object(view)
assert len(bufs) == 2
v2, remainder = deserialize_object(bufs)
assert remainder == []
assert v2.tobytes() == b
@dec.skip_without('numpy')
def test_numpy():
import numpy
from numpy.testing.utils import assert_array_equal
for shape in SHAPES:
for dtype in DTYPES:
A = new_array(shape, dtype=dtype)
bufs = serialize_object(A)
bufs = [memoryview(b) for b in bufs]
B, r = deserialize_object(bufs)
assert r == []
assert A.shape == B.shape
assert A.dtype == B.dtype
assert_array_equal(A,B)
@dec.skip_without('numpy')
def test_recarray():
import numpy
from numpy.testing.utils import assert_array_equal
for shape in SHAPES:
for dtype in [
[('f', float), ('s', '|S10')],
[('n', int), ('s', '|S1'), ('u', 'uint32')],
]:
A = new_array(shape, dtype=dtype)
bufs = serialize_object(A)
B, r = deserialize_object(bufs)
assert r == []
assert A.shape == B.shape
assert A.dtype == B.dtype
assert_array_equal(A,B)
@dec.skip_without('numpy')
def test_numpy_in_seq():
import numpy
from numpy.testing.utils import assert_array_equal
for shape in SHAPES:
for dtype in DTYPES:
A = new_array(shape, dtype=dtype)
bufs = serialize_object((A,1,2,b'hello'))
canned = pickle.loads(bufs[0])
assert isinstance(canned[0], CannedArray)
tup, r = deserialize_object(bufs)
B = tup[0]
assert r == []
assert A.shape == B.shape
assert A.dtype == B.dtype
assert_array_equal(A,B)
@dec.skip_without('numpy')
def test_numpy_in_dict():
import numpy
from numpy.testing.utils import assert_array_equal
for shape in SHAPES:
for dtype in DTYPES:
A = new_array(shape, dtype=dtype)
bufs = serialize_object(dict(a=A,b=1,c=range(20)))
canned = pickle.loads(bufs[0])
assert isinstance(canned['a'], CannedArray)
d, r = deserialize_object(bufs)
B = d['a']
assert r == []
assert A.shape == B.shape
assert A.dtype == B.dtype
assert_array_equal(A,B)
def test_class():
@interactive
class C(object):
a=5
bufs = serialize_object(dict(C=C))
canned = pickle.loads(bufs[0])
assert isinstance(canned['C'], CannedClass)
d, r = deserialize_object(bufs)
C2 = d['C']
assert C2.a == C.a
def test_class_oldstyle():
@interactive
class C:
a=5
bufs = serialize_object(dict(C=C))
canned = pickle.loads(bufs[0])
assert isinstance(canned['C'], CannedClass)
d, r = deserialize_object(bufs)
C2 = d['C']
assert C2.a == C.a
def test_tuple():
tup = (lambda x:x, 1)
bufs = serialize_object(tup)
canned = pickle.loads(bufs[0])
assert isinstance(canned, tuple)
t2, r = deserialize_object(bufs)
assert t2[0](t2[1]) == tup[0](tup[1])
point = namedtuple('point', 'x y')
def test_namedtuple():
p = point(1,2)
bufs = serialize_object(p)
canned = pickle.loads(bufs[0])
assert isinstance(canned, point)
p2, r = deserialize_object(bufs, globals())
assert p2.x == p.x
assert p2.y == p.y
def test_list():
lis = [lambda x:x, 1]
bufs = serialize_object(lis)
canned = pickle.loads(bufs[0])
assert isinstance(canned, list)
l2, r = deserialize_object(bufs)
assert l2[0](l2[1]) == lis[0](lis[1])
def test_class_inheritance():
@interactive
class C(object):
a=5
@interactive
class D(C):
b=10
bufs = serialize_object(dict(D=D))
canned = pickle.loads(bufs[0])
assert isinstance(canned['D'], CannedClass)
d, r = deserialize_object(bufs)
D2 = d['D']
assert D2.a == D.a
assert D2.b == D.b
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