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from pytest import raises
from msgpack import Packer, packb, unpackb
def test_unpack_buffer():
from array import array
buf = array("b")
buf.frombytes(packb((b"foo", b"bar")))
obj = unpackb(buf, use_list=1)
assert [b"foo", b"bar"] == obj
def test_unpack_bytearray():
buf = bytearray(packb((b"foo", b"bar")))
obj = unpackb(buf, use_list=1)
assert [b"foo", b"bar"] == obj
expected_type = bytes
assert all(type(s) is expected_type for s in obj)
def test_unpack_memoryview():
buf = bytearray(packb((b"foo", b"bar")))
view = memoryview(buf)
obj = unpackb(view, use_list=1)
assert [b"foo", b"bar"] == obj
expected_type = bytes
assert all(type(s) is expected_type for s in obj)
def test_packer_getbuffer():
packer = Packer(autoreset=False)
packer.pack_array_header(2)
packer.pack(42)
packer.pack("hello")
buffer = packer.getbuffer()
assert isinstance(buffer, memoryview)
assert bytes(buffer) == b"\x92*\xa5hello"
if Packer.__module__ == "msgpack._cmsgpack": # only for Cython
# cython Packer supports buffer protocol directly
assert bytes(packer) == b"\x92*\xa5hello"
with raises(BufferError):
packer.pack(42)
buffer.release()
packer.pack(42)
assert bytes(packer) == b"\x92*\xa5hello*"
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