def test_invalid_code_first_word_not_digit():
assert not is_valid('corporate-cowbell-commando')
def test_invalid_code_not_three_words():
assert not is_valid('topmost-vagabond')
def test_invalid_code_third_word_not_in_wordlist():
assert not is_valid('3-eating-wasabi')
def test_valid_code_is_valid():
assert is_valid('1-cranky-tapeworm')
def test_invalid_code_second_word_not_in_wordlist():
assert not is_valid('2-tanooki-travesty')