mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-27 01:48:17 +00:00
104 lines
3.0 KiB
Python
104 lines
3.0 KiB
Python
# This file is part of the Trezor project.
|
|
#
|
|
# Copyright (C) 2012-2018 SatoshiLabs and contributors
|
|
#
|
|
# This library is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Lesser General Public License version 3
|
|
# as published by the Free Software Foundation.
|
|
#
|
|
# This library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the License along with this library.
|
|
# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
|
|
|
|
from io import BytesIO
|
|
|
|
import pytest
|
|
|
|
from trezorlib import protobuf
|
|
|
|
|
|
class PrimitiveMessage(protobuf.MessageType):
|
|
FIELDS = {
|
|
0: ("uvarint", protobuf.UVarintType, 0),
|
|
1: ("svarint", protobuf.SVarintType, 0),
|
|
2: ("bool", protobuf.BoolType, 0),
|
|
3: ("bytes", protobuf.BytesType, 0),
|
|
4: ("unicode", protobuf.UnicodeType, 0),
|
|
}
|
|
|
|
|
|
def load_uvarint(buffer):
|
|
reader = BytesIO(buffer)
|
|
return protobuf.load_uvarint(reader)
|
|
|
|
|
|
def dump_uvarint(value):
|
|
writer = BytesIO()
|
|
protobuf.dump_uvarint(writer, value)
|
|
return writer.getvalue()
|
|
|
|
|
|
def test_dump_uvarint():
|
|
assert dump_uvarint(0) == b"\x00"
|
|
assert dump_uvarint(1) == b"\x01"
|
|
assert dump_uvarint(0xff) == b"\xff\x01"
|
|
assert dump_uvarint(123456) == b"\xc0\xc4\x07"
|
|
|
|
with pytest.raises(ValueError):
|
|
dump_uvarint(-1)
|
|
|
|
|
|
def test_load_uvarint():
|
|
assert load_uvarint(b"\x00") == 0
|
|
assert load_uvarint(b"\x01") == 1
|
|
assert load_uvarint(b"\xff\x01") == 0xff
|
|
assert load_uvarint(b"\xc0\xc4\x07") == 123456
|
|
|
|
|
|
def test_sint_uint():
|
|
"""
|
|
Protobuf interleaved signed encoding
|
|
https://developers.google.com/protocol-buffers/docs/encoding#structure
|
|
LSbit is sign, rest is shifted absolute value.
|
|
Or, by example, you count like so: 0, -1, 1, -2, 2, -3 ...
|
|
"""
|
|
assert protobuf.sint_to_uint(0) == 0
|
|
assert protobuf.uint_to_sint(0) == 0
|
|
|
|
assert protobuf.sint_to_uint(-1) == 1
|
|
assert protobuf.sint_to_uint(1) == 2
|
|
|
|
assert protobuf.uint_to_sint(1) == -1
|
|
assert protobuf.uint_to_sint(2) == 1
|
|
|
|
# roundtrip:
|
|
assert protobuf.uint_to_sint(protobuf.sint_to_uint(1234567891011)) == 1234567891011
|
|
assert protobuf.uint_to_sint(protobuf.sint_to_uint(-2 ** 32)) == -2 ** 32
|
|
|
|
|
|
def test_simple_message():
|
|
msg = PrimitiveMessage(
|
|
uvarint=12345678910,
|
|
svarint=-12345678910,
|
|
bool=True,
|
|
bytes=b"\xDE\xAD\xCA\xFE",
|
|
unicode="Příliš žluťoučký kůň úpěl ďábelské ódy 😊",
|
|
)
|
|
|
|
buf = BytesIO()
|
|
|
|
protobuf.dump_message(buf, msg)
|
|
buf.seek(0)
|
|
retr = protobuf.load_message(buf, PrimitiveMessage)
|
|
|
|
assert msg == retr
|
|
assert retr.uvarint == 12345678910
|
|
assert retr.svarint == -12345678910
|
|
assert retr.bool is True
|
|
assert retr.bytes == b"\xDE\xAD\xCA\xFE"
|
|
assert retr.unicode == "Příliš žluťoučký kůň úpěl ďábelské ódy 😊"
|