def test_is_reversible(self):
cipher = Cipher('abcdefghij')
plaintext = 'abcdefghij'
self.assertEqual(cipher.decode(cipher.encode(plaintext)), plaintext)
def test_can_decode(self):
cipher = Cipher('abcdefghij')
self.assertEqual(cipher.decode(cipher.key), 'aaaaaaaaaa')
def test_can_decode(self):
cipher = Cipher('abcdefghij')
self.assertEqual(cipher.decode(cipher.key), 'aaaaaaaaaa')
def test_decode_with_10_shift_distance(self):
cipher = Cipher()
plaintext = 'ghijklmn'
ciphertext = 'wxyzabcd'
self.assertEqual(ciphertext, cipher.decode(plaintext, 10))
def test_decode_with_27_shift_distance(self):
cipher = Cipher()
plaintext = 'xyzabcde'
ciphertext = 'wxyzabcd'
self.assertEqual(ciphertext, cipher.decode(plaintext, 27))
def test_decode_raise_error_if_non_letter_characters(self):
cipher = Cipher()
plaintext = 'az4'
with pytest.raises(Exception):
cipher.decode(plaintext)
def test_decode_wraps_a_to_z(self):
cipher = Cipher()
plaintext = 'a'
ciphertext = 'z'
self.assertEqual(ciphertext, cipher.decode(plaintext))
def test_can_decode_messages_longer_than_the_key(self):
cipher = Cipher("abc")
self.assertEqual(cipher.decode("iboaqcnecbfcr"), "iamapandabear")
def test_cipher_compositiion1(self):
key = ('duxrceqyaimciuucnelkeoxjhdyduucpmrxmaivacmybmsdrzwqxvbxsy'
'gzsabdjmdjabeorttiwinfrpmpogvabiofqexnohrqu')
plaintext = 'adaywithoutlaughterisadaywasted'
c = Cipher(key)
self.assertEqual(plaintext, c.decode(c.encode(plaintext)))
def test_can_decode(self):
cipher = Cipher("abcdefghij")
self.assertEqual(cipher.decode(cipher.key), "aaaaaaaaaa")
def test_can_wrap_on_decode(self):
cipher = Cipher("abcdefghij")
self.assertEqual(cipher.decode("zabcdefghi"), "zzzzzzzzzz")
def test_can_decode(self):
cipher = Cipher()
self.assertEqual(cipher.decode(cipher.key[0:len("aaaaaaaaaa")]),
"aaaaaaaaaa")
def test_can_wrap_on_decode(self):
cipher = Cipher('abcdefghij')
self.assertEqual(cipher.decode('zabcdefghi'), 'zzzzzzzzzz')
def test_is_reversible(self):
cipher = Cipher('abcdefghij')
plaintext = 'abcdefghij'
self.assertEqual(cipher.decode(cipher.encode(plaintext)), plaintext)
def test_can_wrap_on_decode(self):
cipher = Cipher('abcdefghij')
self.assertEqual(cipher.decode('zabcdefghi'), 'zzzzzzzzzz')
def test_cipher_compositiion2(self):
plaintext = 'adaywithoutlaughterisadaywasted'
c = Cipher()
self.assertEqual(plaintext, c.decode(c.encode(plaintext)))
def test_can_decode_messages_longer_than_key(self):
cipher = Cipher('abc')
self.assertEqual(cipher.decode('iboaqcnecbfcr'), 'iamapandabear')
def test_cipher_combo_short_key(self):
text = 'awbxcydz'
c = Cipher('abcd')
cipher = c.encode(text)
self.assertEqual(cipher, 'axdaczfc')
self.assertEqual(c.decode(cipher), text)
def test_decode_letter_with_default_shift_distance(self):
cipher = Cipher()
plaintext = 'b'
ciphertext = 'a'
self.assertEqual(ciphertext, cipher.decode(plaintext))
def test_cipher_compositiion1(self):
key = ('duxrceqyaimciuucnelkeoxjhdyduucpmrxmaivacmybmsdrzwqxvbxsy'
'gzsabdjmdjabeorttiwinfrpmpogvabiofqexnohrqu')
plaintext = 'adaywithoutlaughterisadaywasted'
c = Cipher(key)
self.assertEqual(c.decode(c.encode(plaintext)), plaintext)
def test_decode_string_with_default_shift_distance(self):
cipher = Cipher()
plaintext = 'xyzabcde'
ciphertext = 'wxyzabcd'
self.assertEqual(ciphertext, cipher.decode(plaintext))
def test_cipher_compositiion2(self):
plaintext = 'adaywithoutlaughterisadaywasted'
c = Cipher()
self.assertEqual(c.decode(c.encode(plaintext)), plaintext)
def test_decode_with_26_shift_distance(self):
cipher = Cipher()
plaintext = 'klmnopqrst'
ciphertext = 'klmnopqrst'
self.assertEqual(ciphertext, cipher.decode(plaintext, 26))
def test_can_decode(self):
cipher = Cipher()
plaintext = 'aaaaaaaaaa'
self.assertEqual(cipher.decode(cipher.key[:len(plaintext)]), plaintext)
def test_decode_always_returns_downcase_string(self):
cipher = Cipher()
plaintext = 'BcDeFgHiJk'
ciphertext = 'abcdefghij'
self.assertEqual(ciphertext, cipher.decode(plaintext))
def test_can_decode(self):
cipher = Cipher()
plaintext = 'aaaaaaaaaa'
self.assertEqual(cipher.decode(cipher.key[:len(plaintext)]), plaintext)
