mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-11-15 22:16:37 +03:00
62 lines
1.5 KiB
Python
62 lines
1.5 KiB
Python
from typing import Tuple
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from pytest import raises
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from telethon._impl.mtproto import Intermediate
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class Output(bytearray):
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__slots__ = ()
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def __call__(self, data: bytes) -> None:
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self += data
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def setup_pack(n: int) -> Tuple[Intermediate, bytes, Output]:
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input = bytes(x & 0xFF for x in range(n))
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return Intermediate(), input, Output()
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def test_pack_empty() -> None:
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transport, input, output = setup_pack(0)
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transport.pack(input, output)
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assert output == b"\xee\xee\xee\xee\0\0\0\0"
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def test_pack_non_padded() -> None:
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transport, input, output = setup_pack(7)
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with raises(AssertionError):
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transport.pack(input, output)
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def test_pack_normal() -> None:
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transport, input, output = setup_pack(128)
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transport.pack(input, output)
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assert output[:8] == b"\xee\xee\xee\xee\x80\0\0\0"
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assert output[8:] == input
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def test_unpack_small() -> None:
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transport = Intermediate()
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input = b"\x01"
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output = bytearray()
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with raises(ValueError) as e:
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transport.unpack(input, output)
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e.match("missing bytes")
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def test_unpack_normal() -> None:
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transport, input, packed = setup_pack(128)
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unpacked = bytearray()
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transport.pack(input, packed)
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transport.unpack(packed[4:], unpacked)
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assert input == unpacked
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def test_unpack_two_at_once() -> None:
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transport, input, packed = setup_pack(128)
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unpacked = bytearray()
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transport.pack(input, packed)
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n = transport.unpack(packed[4:] + packed[4:], unpacked)
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assert input == unpacked
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assert n == len(packed[4:])
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