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#!/usr/bin/env python
import struct
from collections import OrderedDict
from io import BytesIO
import pytest
from msgpack import Packer, Unpacker, packb, unpackb
def check(data, use_list=False):
re = unpackb(packb(data), use_list=use_list, strict_map_key=False)
assert re == data
def testPack():
test_data = [
0,
1,
127,
128,
255,
256,
65535,
65536,
4294967295,
4294967296,
-1,
-32,
-33,
-128,
-129,
-32768,
-32769,
-4294967296,
-4294967297,
1.0,
b"",
b"a",
b"a" * 31,
b"a" * 32,
None,
True,
False,
(),
((),),
((), None),
{None: 0},
(1 << 23),
]
for td in test_data:
check(td)
def testPackUnicode():
test_data = ["", "abcd", ["defgh"], "Русский текст"]
for td in test_data:
re = unpackb(packb(td), use_list=1, raw=False)
assert re == td
packer = Packer()
data = packer.pack(td)
re = Unpacker(BytesIO(data), raw=False, use_list=1).unpack()
assert re == td
def testPackBytes():
test_data = [b"", b"abcd", (b"defgh",)]
for td in test_data:
check(td)
def testPackByteArrays():
test_data = [bytearray(b""), bytearray(b"abcd"), (bytearray(b"defgh"),)]
for td in test_data:
check(td)
def testIgnoreUnicodeErrors():
re = unpackb(packb(b"abc\xeddef", use_bin_type=False), raw=False, unicode_errors="ignore")
assert re == "abcdef"
def testStrictUnicodeUnpack():
packed = packb(b"abc\xeddef", use_bin_type=False)
with pytest.raises(UnicodeDecodeError):
unpackb(packed, raw=False, use_list=1)
def testIgnoreErrorsPack():
re = unpackb(
packb("abc\udc80\udcffdef", use_bin_type=True, unicode_errors="ignore"),
raw=False,
use_list=1,
)
assert re == "abcdef"
def testDecodeBinary():
re = unpackb(packb(b"abc"), use_list=1)
assert re == b"abc"
def testPackFloat():
assert packb(1.0, use_single_float=True) == b"\xca" + struct.pack(">f", 1.0)
assert packb(1.0, use_single_float=False) == b"\xcb" + struct.pack(">d", 1.0)
def testArraySize(sizes=[0, 5, 50, 1000]):
bio = BytesIO()
packer = Packer()
for size in sizes:
bio.write(packer.pack_array_header(size))
for i in range(size):
bio.write(packer.pack(i))
bio.seek(0)
unpacker = Unpacker(bio, use_list=1)
for size in sizes:
assert unpacker.unpack() == list(range(size))
def test_manualreset(sizes=[0, 5, 50, 1000]):
packer = Packer(autoreset=False)
for size in sizes:
packer.pack_array_header(size)
for i in range(size):
packer.pack(i)
bio = BytesIO(packer.bytes())
unpacker = Unpacker(bio, use_list=1)
for size in sizes:
assert unpacker.unpack() == list(range(size))
packer.reset()
assert packer.bytes() == b""
def testMapSize(sizes=[0, 5, 50, 1000]):
bio = BytesIO()
packer = Packer()
for size in sizes:
bio.write(packer.pack_map_header(size))
for i in range(size):
bio.write(packer.pack(i)) # key
bio.write(packer.pack(i * 2)) # value
bio.seek(0)
unpacker = Unpacker(bio, strict_map_key=False)
for size in sizes:
assert unpacker.unpack() == {i: i * 2 for i in range(size)}
def test_odict():
seq = [(b"one", 1), (b"two", 2), (b"three", 3), (b"four", 4)]
od = OrderedDict(seq)
assert unpackb(packb(od), use_list=1) == dict(seq)
def pair_hook(seq):
return list(seq)
assert unpackb(packb(od), object_pairs_hook=pair_hook, use_list=1) == seq
def test_pairlist():
pairlist = [(b"a", 1), (2, b"b"), (b"foo", b"bar")]
packer = Packer()
packed = packer.pack_map_pairs(pairlist)
unpacked = unpackb(packed, object_pairs_hook=list, strict_map_key=False)
assert pairlist == unpacked
def test_get_buffer():
packer = Packer(autoreset=0, use_bin_type=True)
packer.pack([1, 2])
strm = BytesIO()
strm.write(packer.getbuffer())
written = strm.getvalue()
expected = packb([1, 2], use_bin_type=True)
assert written == expected
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