def test_break_cipher_notenglish2():
cipher = encrypt_('привет', 145)
assert break_cipher(cipher) == "Not English"
def test_break_cipher_notenglish():
cipher = encrypt_('russkoeslovo', 145)
assert break_cipher(cipher) == "Not English"
def test_break_cipher_small_word():
assert break_cipher('hfy') == 'cat'
def test_break_cipher_small_sentence():
assert break_cipher(
"dcrt ndj zcdl paa iwt tatbtcih, xi'h cdi sxuuxrjai id ejaa idvtiwtg p htcitcrt"
) == "once you know all the elements, it's not difficult to pull together a sentence"
def test_break_cipher_text():
text = 'It was the best of times, it was the worst of times'
cipher = encrypt_(text, 5)
assert break_cipher(cipher) == text.lower()