mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-11-15 14:06:41 +03:00
104 lines
2.8 KiB
Python
104 lines
2.8 KiB
Python
from typing import Tuple
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from pytest import raises
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from telethon._impl.mtproto.transport.full import Full
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def setup_pack(n: int) -> Tuple[Full, bytes, bytearray]:
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input = bytes(x & 0xFF for x in range(n))
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return Full(), input, bytearray()
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def setup_unpack(n: int) -> Tuple[bytes, Full, bytes, bytearray]:
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transport, expected_output, input = setup_pack(n)
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transport.pack(expected_output, input)
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return expected_output, Full(), input, bytearray()
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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"\x0c\x00\x00\x00\x00\x00\x00\x00&\xca\x8d2"
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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[:4] == b"\x8c\0\0\0"
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assert output[4:8] == b"\0\0\0\0"
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assert output[8 : 8 + len(input)] == input
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assert output[8 + len(input) :] == b"\x86s\x957"
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def test_pack_twice() -> None:
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transport, input, output = setup_pack(128)
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transport.pack(input, output)
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output.clear()
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transport.pack(input, output)
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assert output[:4] == b"\x8c\0\0\0"
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assert output[4:8] == b"\x01\0\0\0"
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assert output[8 : 8 + len(input)] == input
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assert output[8 + len(input) :] == b"\x96\t\xf0J"
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def test_unpack_small() -> None:
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transport = Full()
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input = b"\0\x01\x02"
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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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expected_output, transport, input, output = setup_unpack(128)
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transport.unpack(input, output)
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assert output == expected_output
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def test_unpack_twice() -> 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, unpacked)
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assert input == unpacked
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packed.clear()
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unpacked.clear()
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transport.pack(input, packed)
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transport.unpack(packed, unpacked)
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assert input == unpacked
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def test_unpack_bad_crc() -> None:
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_, transport, input, output = setup_unpack(128)
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input = input[:-1] + bytes((input[-1] ^ 0xFF,))
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with raises(ValueError) as e:
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transport.unpack(input, output)
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e.match("bad crc")
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e.match("expected: 932541318")
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e.match("got: 3365237638")
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def test_unpack_bad_seq() -> 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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packed.clear()
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transport.pack(input, packed)
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with raises(ValueError) as e:
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transport.unpack(packed, unpacked)
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e.match("bad seq")
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e.match("expected: 0")
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e.match("got: 1")
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