def test_long_decode_encode_decode_equal(self, ts):
ec = K.Encoder()
dc = K.Decoder()
for t in ts:
dc.update(t)
ec.update(dc.finalize())
assert ''.join(ts) == ec.finalize()
def test_checksum_encodings(self):
for bts, encoding, cs in _get_encoding_set():
ec = K.Encoder(checksum=True)
ec.update(bts)
ret = ec.finalize()
assert ret[:-1] == encoding
assert ret[-1] == cs
def test_bad_checksum_decodings(self):
ec = K.Encoder()
for bts, encoding, cs in _get_encoding_set():
for bcs in ec._alphabet.values():
if bcs == cs:
continue
dc = K.Decoder(checksum=True)
dc.update(encoding)
dc.update(bcs)
with pytest.raises(K.decode.DecoderChecksumException):
dc.finalize()
def test_any_simple_encode_with_checksum(self, b):
ec = K.Encoder(checksum=True)
ec.update(b)
cs = 0
for byte in b:
cs = cs << 8
cs += byte
cs = cs % 37
v = ec.finalize()
assert v is not None
assert v[-1] == ec._alphabet.get(cs)
def test_simple_decodings_fuzzed(self):
ec = K.Encoder()
for bts, encoding, _ in _get_encoding_set():
if len(encoding) == 8:
continue
for fuzz in range(32):
if fuzz & (pow(2, [0, 0, 2, 0, 4, 1, 0, 3][len(encoding) % 8])
- 1) == 0:
continue
fuzzc = ec._alphabet.get(fuzz)
encoding = encoding[:-1] + fuzzc
dc = K.Decoder()
dc.update(encoding)
with pytest.raises(K.decode.DecoderNonZeroCarryException):
dc.finalize()
def test_alphabet(self):
ec = K.Encoder()
alphabet = {
0: '0',
1: '1',
2: '2',
3: '3',
4: '4',
5: '5',
6: '6',
7: '7',
8: '8',
9: '9',
10: 'A',
11: 'B',
12: 'C',
13: 'D',
14: 'E',
15: 'F',
16: 'G',
17: 'H',
18: 'J',
19: 'K',
20: 'M',
21: 'N',
22: 'P',
23: 'Q',
24: 'R',
25: 'S',
26: 'T',
27: 'V',
28: 'W',
29: 'X',
30: 'Y',
31: 'Z',
# Extended checksum values
32: '*',
33: '~',
34: '$',
35: '=',
36: 'U'
}
assert ec._alphabet == alphabet
def test_instantiates(self):
assert isinstance(K.Encoder(), K.Encoder)
def test_decode_encode_decode_equal(self, t):
ec = K.Encoder()
dc = K.Decoder()
dc.update(t)
ec.update(dc.finalize())
assert t == ec.finalize()
def test_encode_decode_encode_with_checksum_equal(self, b):
ec = K.Encoder(checksum=True)
dc = K.Decoder(checksum=True)
ec.update(b)
dc.update(ec.finalize())
assert b == dc.finalize()
def test_encode_decode_encode_equal(self, b):
ec = K.Encoder()
dc = K.Decoder()
ec.update(b)
dc.update(ec.finalize())
assert b == dc.finalize()
def test_multiple_final(self):
ec = K.Encoder()
ec.update([0])
ec.finalize()
with pytest.raises(K.encode.EncoderAlreadyFinalizedException):
ec.finalize()
def test_any_complex_encode(self, bs):
ec = K.Encoder()
for b in bs:
ec.update(b)
assert ec.finalize() is not None
def test_any_simple_encode(self, b):
ec = K.Encoder()
ec.update(b)
assert ec.finalize() is not None
def test_simple_encodings(self):
for bts, encoding, _ in _get_encoding_set():
ec = K.Encoder()
ec.update(bts)
assert ec.finalize() == encoding