def test_decrypt_invalid_iv(self):
data = b'x' * 16
key = b'a' * 16
iv = 'o' * 16
with pytest.raises(ValueError):
dec(data, key, iv)
def test_decrypt_invalid_iv_length(self):
data = b'x' * 10
key = b'a' * 10
iv = b'0' * 11
with pytest.raises(ValueError):
dec(data, key, iv)
def test_decrypt(self):
data = b'x' * 16
key = b'a' * 16
iv = b'0' * 16
encrypted = enc(data, key, iv)
result = dec(encrypted, key, iv)
assert len(result) == 16