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33 lines
778 B
Python
33 lines
778 B
Python
from amodem import ecc
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import random
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import itertools
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import reedsolo
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def concat(chunks):
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return bytearray(itertools.chain.from_iterable(chunks))
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def test_random():
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r = random.Random(0)
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x = bytearray(r.randrange(0, 256) for i in range(64 * 1024))
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y = ecc.encode(x)
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x_ = concat(ecc.decode(y))
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assert x_ == x
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def test_errors():
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data = bytearray(range(244))
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blocks = list(ecc.encode(data))
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assert len(blocks) == 2
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for i in range(ecc.DEFAULT_NSYM // 2):
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blocks[0][i] = blocks[0][i] ^ 0xFF
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i = ecc.DEFAULT_NSYM // 2
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try:
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blocks[0][i] = blocks[0][i] ^ 0xFF
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concat(ecc.decode(blocks))
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assert False
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except reedsolo.ReedSolomonError as e:
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assert e.args == ('Too many errors to correct',)
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