def test_decode_long():
# https://www.lipsum.com
test_str = 'ORUHP LSVXP GRORU VLW DPHW FRQVHFWHWXU DGLSLVFLQJ HOLW PDXULV DXJXH QLVL VROOLFLWXGLQ LG VDJLWWLV VHG ' \
'WULVWLTXH YHO LSVXP SURLQ DOLTXDP OXFWXV PDXULV '
assert cc.decode(
test_str,
3) == 'LOREM IPSUM DOLOR SIT AMET CONSECTETUR ADIPISCING ELIT MAURIS AUGUE NISI SOLLICITUDIN ID SAGITTIS SED ' \
'TRISTIQUE VEL IPSUM PROIN ALIQUAM LUCTUS MAURIS '
def test_decode_invalid_char():
test_str = 'ab_34_$%'
assert cc.decode(test_str, 3) == 'ab_34_$%'
def test_decode():
test_str = 'DEFGABC'
assert cc.decode(test_str, 3) == 'ABCDXYZ'