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from __future__ import print_function
import array
import msgpack
from msgpack import ExtType
def test_pack_ext_type():
def p(s):
packer = msgpack.Packer()
packer.pack_ext_type(0x42, s)
return packer.bytes()
assert p(b'A') == b'\xd4\x42A' # fixext 1
assert p(b'AB') == b'\xd5\x42AB' # fixext 2
assert p(b'ABCD') == b'\xd6\x42ABCD' # fixext 4
assert p(b'ABCDEFGH') == b'\xd7\x42ABCDEFGH' # fixext 8
assert p(b'A'*16) == b'\xd8\x42' + b'A'*16 # fixext 16
assert p(b'ABC') == b'\xc7\x03\x42ABC' # ext 8
assert p(b'A'*0x0123) == b'\xc8\x01\x23\x42' + b'A'*0x0123 # ext 16
assert p(b'A'*0x00012345) == b'\xc9\x00\x01\x23\x45\x42' + b'A'*0x00012345 # ext 32
def test_unpack_ext_type():
def check(b, expected):
assert msgpack.unpackb(b) == expected
check(b'\xd4\x42A', ExtType(0x42, b'A')) # fixext 1
check(b'\xd5\x42AB', ExtType(0x42, b'AB')) # fixext 2
check(b'\xd6\x42ABCD', ExtType(0x42, b'ABCD')) # fixext 4
check(b'\xd7\x42ABCDEFGH', ExtType(0x42, b'ABCDEFGH')) # fixext 8
check(b'\xd8\x42' + b'A'*16, ExtType(0x42, b'A'*16)) # fixext 16
check(b'\xc7\x03\x42ABC', ExtType(0x42, b'ABC')) # ext 8
check(b'\xc8\x01\x23\x42' + b'A'*0x0123,
ExtType(0x42, b'A'*0x0123)) # ext 16
check(b'\xc9\x00\x01\x23\x45\x42' + b'A'*0x00012345,
ExtType(0x42, b'A'*0x00012345)) # ext 32
def test_extension_type():
def default(obj):
print('default called', obj)
if isinstance(obj, array.array):
typecode = 123 # application specific typecode
data = obj.tostring()
return ExtType(typecode, data)
raise TypeError("Unknown type object %r" % (obj,))
def ext_hook(code, data):
print('ext_hook called', code, data)
assert code == 123
obj = array.array('d')
obj.fromstring(data)
return obj
obj = [42, b'hello', array.array('d', [1.1, 2.2, 3.3])]
s = msgpack.packb(obj, default=default)
obj2 = msgpack.unpackb(s, ext_hook=ext_hook)
assert obj == obj2
import sys
if sys.version > '3':
long = int
def test_overriding_hooks():
def default(obj):
if isinstance(obj, long):
return {"__type__": "long", "__data__": str(obj)}
else:
return obj
obj = {"testval": long(1823746192837461928374619)}
refobj = {"testval": default(obj["testval"])}
refout = msgpack.packb(refobj)
assert isinstance(refout, (str, bytes))
testout = msgpack.packb(obj, default=default)
assert refout == testout
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