mirror of
https://github.com/trezor/trezor-firmware.git
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54f1599a5a
This clarifies the intent: the project is licenced under terms of LGPL version 3 only, but the standard headers cover only "3 or later", so we had to rewrite them. In the same step, we removed author information from individual files in favor of "SatoshiLabs and contributors", and include an AUTHORS file that lists the contributors. Apologies to those whose names are missing; please contact us if you wish to add your info to the AUTHORS file.
107 lines
3.0 KiB
Python
107 lines
3.0 KiB
Python
# This file is part of the Trezor project.
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#
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# Copyright (C) 2012-2018 SatoshiLabs and contributors
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3
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# as published by the Free Software Foundation.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the License along with this library.
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# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
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from io import BytesIO
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import pytest
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from trezorlib import protobuf
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class PrimitiveMessage(protobuf.MessageType):
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FIELDS = {
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0: ("uvarint", protobuf.UVarintType, 0),
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1: ("svarint", protobuf.SVarintType, 0),
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2: ("bool", protobuf.BoolType, 0),
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3: ("bytes", protobuf.BytesType, 0),
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4: ("unicode", protobuf.UnicodeType, 0),
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}
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def load_uvarint(buffer):
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reader = BytesIO(buffer)
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return protobuf.load_uvarint(reader)
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def dump_uvarint(value):
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writer = BytesIO()
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protobuf.dump_uvarint(writer, value)
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return writer.getvalue()
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def test_dump_uvarint():
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assert dump_uvarint(0) == b'\x00'
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assert dump_uvarint(1) == b'\x01'
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assert dump_uvarint(0xff) == b'\xff\x01'
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assert dump_uvarint(123456) == b'\xc0\xc4\x07'
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with pytest.raises(ValueError):
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dump_uvarint(-1)
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def test_load_uvarint():
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assert load_uvarint(b'\x00') == 0
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assert load_uvarint(b'\x01') == 1
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assert load_uvarint(b'\xff\x01') == 0xff
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assert load_uvarint(b'\xc0\xc4\x07') == 123456
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def test_sint_uint():
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"""
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Protobuf interleaved signed encoding
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https://developers.google.com/protocol-buffers/docs/encoding#structure
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LSbit is sign, rest is shifted absolute value.
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Or, by example, you count like so: 0, -1, 1, -2, 2, -3 ...
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"""
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assert protobuf.sint_to_uint(0) == 0
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assert protobuf.uint_to_sint(0) == 0
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assert protobuf.sint_to_uint(-1) == 1
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assert protobuf.sint_to_uint(1) == 2
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assert protobuf.uint_to_sint(1) == -1
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assert protobuf.uint_to_sint(2) == 1
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# roundtrip:
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assert protobuf.uint_to_sint(
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protobuf.sint_to_uint(1234567891011)
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) == 1234567891011
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assert protobuf.uint_to_sint(
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protobuf.sint_to_uint(- 2 ** 32)
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) == - 2 ** 32
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def test_simple_message():
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msg = PrimitiveMessage(
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uvarint=12345678910,
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svarint=-12345678910,
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bool=True,
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bytes=b'\xDE\xAD\xCA\xFE',
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unicode="Příliš žluťoučký kůň úpěl ďábelské ódy 😊",
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)
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buf = BytesIO()
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protobuf.dump_message(buf, msg)
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buf.seek(0)
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retr = protobuf.load_message(buf, PrimitiveMessage)
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assert msg == retr
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assert retr.uvarint == 12345678910
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assert retr.svarint == -12345678910
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assert retr.bool is True
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assert retr.bytes == b'\xDE\xAD\xCA\xFE'
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assert retr.unicode == "Příliš žluťoučký kůň úpěl ďábelské ódy 😊"
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