mirror of
https://github.com/protocolbuffers/protobuf
synced 2026-08-26 02:23:14 -04:00
3a9f0743ea
Added the following methods: serialize_length_prefixed(message: Message, output: io.BytesIO) -> None parse_length_prefixed(message_class: Type[Message], input_bytes: io.BytesIO) -> Message The output of serialize_length_prefixed should be BytesIO or custom buffered IO that data should be written to. The output stream must be buffered, e.g. using https://docs.python.org/3/library/io.html#buffered-streams. PiperOrigin-RevId: 638375900
57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
# -*- coding: utf-8 -*-
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# Protocol Buffers - Google's data interchange format
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# Copyright 2008 Google Inc. All rights reserved.
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#
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file or at
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# https://developers.google.com/open-source/licenses/bsd
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"""Test decoder."""
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import io
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import unittest
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from google.protobuf.internal import decoder
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from google.protobuf.internal import testing_refleaks
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_INPUT_BYTES = b'\x84r\x12'
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_EXPECTED = (14596, 18)
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@testing_refleaks.TestCase
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class DecoderTest(unittest.TestCase):
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def test_decode_varint_bytes(self):
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(size, pos) = decoder._DecodeVarint(_INPUT_BYTES, 0)
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self.assertEqual(size, _EXPECTED[0])
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self.assertEqual(pos, 2)
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(size, pos) = decoder._DecodeVarint(_INPUT_BYTES, 2)
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self.assertEqual(size, _EXPECTED[1])
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self.assertEqual(pos, 3)
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def test_decode_varint_bytes_empty(self):
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with self.assertRaises(IndexError) as context:
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(size, pos) = decoder._DecodeVarint(b'', 0)
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self.assertIn('index out of range', str(context.exception))
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def test_decode_varint_bytesio(self):
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index = 0
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input_io = io.BytesIO(_INPUT_BYTES)
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while True:
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size = decoder._DecodeVarint(input_io)
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if size is None:
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break
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self.assertEqual(size, _EXPECTED[index])
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index += 1
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self.assertEqual(index, len(_EXPECTED))
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def test_decode_varint_bytesio_empty(self):
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input_io = io.BytesIO(b'')
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size = decoder._DecodeVarint(input_io)
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self.assertEqual(size, None)
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if __name__ == '__main__':
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unittest.main()
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