def test_decode_bits(self):
""" decode_bits should have correct num_errs, even if corrected = None
"""
for bitvec in ten_bitvecs:
corr, num_errs = golay.decode_bits(bitvec)
if corr is None:
self.assertEqual(num_errs, 4)
else:
self.assertEqual(((corr + bitvec) % 2).sum(), num_errs)
def test_another(self):
""" decode_bits should fix"""
def _make_12bits():
n = 12
res = numpy.zeros((2 ** n, n), dtype="int")
for i in range(2 ** n):
res[i] = tuple((0, 1)[i >> j & 1]
for j in xrange(n - 1, -1, -1))
return res
# all possible 12 bit messages
all_12bits = _make_12bits()
# test of decode_bits
trans = numpy.dot(golay.DEFAULT_G.T, all_12bits[666]) % 2
err = (
0,
1,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
1,
0,
0,
0,
0,
0,
0,
0)
rec = (trans + err) % 2
corr, num_errs = golay.decode_bits(rec)
self.assertEqual(corr, trans)
self.assertEqual(corr, numpy.mod(rec + err, 2))
self.assertEqual(num_errs, 2)
def test_another(self):
""" decode_bits should fix"""
def _make_12bits():
n = 12
res = numpy.zeros((2**n, n), dtype="int")
for i in range(2**n):
res[i] = tuple(
(0, 1)[i >> j & 1] for j in xrange(n - 1, -1, -1))
return res
# all possible 12 bit messages
all_12bits = _make_12bits()
# test of decode_bits
trans = numpy.dot(golay.DEFAULT_G.T, all_12bits[666]) % 2
err = (0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
0, 0, 0)
rec = (trans + err) % 2
corr, num_errs = golay.decode_bits(rec)
self.assertItemsEqual(corr, trans)
self.assertItemsEqual(corr, numpy.mod(rec + err, 2))
self.assertEqual(num_errs, 2)
