mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-22 06:18:07 +00:00
89 lines
2.8 KiB
Python
89 lines
2.8 KiB
Python
from common import *
|
|
|
|
import protobuf
|
|
from trezor.utils import BufferReader, BufferWriter
|
|
|
|
|
|
class Message(protobuf.MessageType):
|
|
def __init__(self, uint_field: int = 0, enum_field: int = 0) -> None:
|
|
self.sint_field = uint_field
|
|
self.enum_field = enum_field
|
|
|
|
@classmethod
|
|
def get_fields(cls):
|
|
return {
|
|
1: ("sint_field", protobuf.SVarintType, 0),
|
|
2: ("enum_field", protobuf.EnumType("t", (0, 5, 25)), 0),
|
|
}
|
|
|
|
|
|
def load_uvarint(data: bytes) -> int:
|
|
reader = BufferReader(data)
|
|
return protobuf.load_uvarint(reader)
|
|
|
|
|
|
def dump_uvarint(value: int) -> bytearray:
|
|
writer = BufferWriter(bytearray(16))
|
|
protobuf.dump_uvarint(writer, value)
|
|
return memoryview(writer.buffer)[:writer.offset]
|
|
|
|
|
|
class TestProtobuf(unittest.TestCase):
|
|
def test_dump_uvarint(self):
|
|
self.assertEqual(dump_uvarint(0), b"\x00")
|
|
self.assertEqual(dump_uvarint(1), b"\x01")
|
|
self.assertEqual(dump_uvarint(0xFF), b"\xff\x01")
|
|
self.assertEqual(dump_uvarint(123456), b"\xc0\xc4\x07")
|
|
with self.assertRaises(ValueError):
|
|
dump_uvarint(-1)
|
|
|
|
def test_load_uvarint(self):
|
|
self.assertEqual(load_uvarint(b"\x00"), 0)
|
|
self.assertEqual(load_uvarint(b"\x01"), 1)
|
|
self.assertEqual(load_uvarint(b"\xff\x01"), 0xFF)
|
|
self.assertEqual(load_uvarint(b"\xc0\xc4\x07"), 123456)
|
|
|
|
def test_sint_uint(self):
|
|
self.assertEqual(protobuf.uint_to_sint(0), 0)
|
|
self.assertEqual(protobuf.sint_to_uint(0), 0)
|
|
|
|
self.assertEqual(protobuf.sint_to_uint(-1), 1)
|
|
self.assertEqual(protobuf.sint_to_uint(1), 2)
|
|
|
|
self.assertEqual(protobuf.uint_to_sint(1), -1)
|
|
self.assertEqual(protobuf.uint_to_sint(2), 1)
|
|
|
|
# roundtrip:
|
|
self.assertEqual(
|
|
protobuf.uint_to_sint(protobuf.sint_to_uint(1234567891011)), 1234567891011
|
|
)
|
|
self.assertEqual(
|
|
protobuf.uint_to_sint(protobuf.sint_to_uint(-2 ** 32)), -2 ** 32
|
|
)
|
|
|
|
def test_validate_enum(self):
|
|
# ok message:
|
|
msg = Message(-42, 5)
|
|
length = protobuf.count_message(msg)
|
|
buffer_writer = BufferWriter(bytearray(length))
|
|
protobuf.dump_message(buffer_writer, msg)
|
|
|
|
buffer_reader = BufferReader(buffer_writer.buffer)
|
|
nmsg = protobuf.load_message(buffer_reader, Message)
|
|
|
|
self.assertEqual(msg.sint_field, nmsg.sint_field)
|
|
self.assertEqual(msg.enum_field, nmsg.enum_field)
|
|
|
|
# bad enum value:
|
|
buffer_writer.seek(0)
|
|
msg = Message(-42, 42)
|
|
# XXX this assumes the message will have equal size
|
|
protobuf.dump_message(buffer_writer, msg)
|
|
buffer_reader.seek(0)
|
|
with self.assertRaises(TypeError):
|
|
protobuf.load_message(buffer_reader, Message)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|