def test_check(self) -> None:
rs = RSCodec()
msg = bytearray("hello world " * 10, "latin1")
enc = rs.encode(msg)
rmsg, renc = rs.decode(enc)
self.assertEqual(rs.check(enc), [True])
self.assertEqual(rs.check(renc), [True])
for i in [27, -3, -9, 7, 0]:
enc[i] = 99
rmsg, renc = rs.decode(enc)
self.assertEqual(rs.check(enc), [False])
self.assertEqual(rs.check(renc), [True])
def test_c_exp_12(self) -> None:
rsc = RSCodec(12, c_exp=12)
rsc2 = RSCodec(12, nsize=4095)
self.assertEqual(rsc.c_exp, rsc2.c_exp)
self.assertEqual(rsc.nsize, rsc2.nsize)
mes = 'a'*(4095-12)
mesecc = rsc.encode(mes)
mesecc[2] = 1
mesecc[-1] = 1
rmes, rmesecc = rsc.decode(mesecc)
self.assertEqual(rsc.check(mesecc), [False])
self.assertEqual(rsc.check(rmesecc), [True])
self.assertEqual([x for x in rmes], [ord(x) for x in mes])
def test_c_exp_9(self):
rsc = RSCodec(12, c_exp=9)
rsc2 = RSCodec(12, nsize=511)
self.assertEqual(rsc.c_exp, rsc2.c_exp)
self.assertEqual(rsc.nsize, rsc2.nsize)
mes = 'a' * ((511 - 12) * 2)
mesecc = rsc.encode(mes)
mesecc[2] = 1
mesecc[-1] = 1
rmes, rmesecc = rsc.decode(mesecc)
self.assertEqual(rsc.check(mesecc), [False, False])
self.assertEqual(rsc.check(rmesecc), [True, True])
self.assertEqual([x for x in rmes], [ord(x) for x in mes])
