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https://github.com/romanz/amodem.git
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53 lines
1.2 KiB
Python
53 lines
1.2 KiB
Python
from amodem import framing
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import random
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import itertools
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import pytest
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def concat(iterable):
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return bytearray(itertools.chain.from_iterable(iterable))
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r = random.Random(0)
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blob = bytearray(r.randrange(0, 256) for i in range(64 * 1024))
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@pytest.fixture(params=[b'', b'abc', b'1234567890', blob, blob[:12345]])
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def data(request):
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return request.param
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def test_checksum(data):
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c = framing.Checksum()
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assert c.decode(c.encode(data)) == data
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def test_framer(data):
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f = framing.Framer()
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encoded = concat(f.encode(data))
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decoded = concat(f.decode(encoded))
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assert decoded == data
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def test_main(data):
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encoded = framing.encode(data)
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decoded = framing.decode_frames(encoded)
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assert concat(decoded) == data
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def test_fail():
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encoded = list(framing.encode(''))
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encoded[-1] = not encoded[-1]
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with pytest.raises(ValueError):
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concat(framing.decode_frames(encoded))
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def test_missing():
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f = framing.Framer()
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with pytest.raises(ValueError):
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concat(f.decode(b''))
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with pytest.raises(ValueError):
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concat(f.decode(b'\x01'))
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with pytest.raises(ValueError):
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concat(f.decode(b'\xff'))
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