mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-22 22:38:08 +00:00
113 lines
3.3 KiB
Python
113 lines
3.3 KiB
Python
from common import *
|
|
|
|
import protobuf
|
|
|
|
if False:
|
|
from typing import Awaitable, Dict
|
|
|
|
|
|
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) -> Dict:
|
|
return {
|
|
1: ("sint_field", protobuf.SVarintType, 0),
|
|
2: ("enum_field", protobuf.EnumType("t", (0, 5, 25)), 0),
|
|
}
|
|
|
|
|
|
class ByteReader:
|
|
def __init__(self, data: bytes) -> None:
|
|
self.data = data
|
|
self.pos = 0
|
|
|
|
async def areadinto(self, buf: bytearray) -> int:
|
|
remaining = len(self.data) - self.pos
|
|
limit = len(buf)
|
|
if remaining < limit:
|
|
raise EOFError
|
|
|
|
buf[:] = self.data[self.pos : self.pos + limit]
|
|
self.pos += limit
|
|
return limit
|
|
|
|
|
|
class ByteArrayWriter:
|
|
def __init__(self) -> None:
|
|
self.buf = bytearray(0)
|
|
|
|
async def awrite(self, buf: bytes) -> int:
|
|
self.buf.extend(buf)
|
|
return len(buf)
|
|
|
|
|
|
def load_uvarint(data: bytes) -> int:
|
|
reader = ByteReader(data)
|
|
return await_result(protobuf.load_uvarint(reader))
|
|
|
|
|
|
def dump_uvarint(value: int) -> bytearray:
|
|
writer = ByteArrayWriter()
|
|
await_result(protobuf.dump_uvarint(writer, value))
|
|
return writer.buf
|
|
|
|
|
|
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)
|
|
writer = ByteArrayWriter()
|
|
await_result(protobuf.dump_message(writer, msg))
|
|
reader = ByteReader(bytes(writer.buf))
|
|
nmsg = await_result(protobuf.load_message(reader, Message))
|
|
|
|
self.assertEqual(msg.sint_field, nmsg.sint_field)
|
|
self.assertEqual(msg.enum_field, nmsg.enum_field)
|
|
|
|
# bad enum value:
|
|
msg = Message(-42, 42)
|
|
writer = ByteArrayWriter()
|
|
await_result(protobuf.dump_message(writer, msg))
|
|
reader = ByteReader(bytes(writer.buf))
|
|
with self.assertRaises(TypeError):
|
|
await_result(protobuf.load_message(reader, Message))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|