from practice_questions import is_word

def test_match():
    assert is_word("akataka") == True
    assert is_word("ububu") == True
    assert is_word("ikekezaza") == True

def test_extra():
    assert is_word("akatakaa") == False
    assert is_word("uububu") == False

def test_bad_letter():
    assert is_word("yakataka") == False
    assert is_word("akatakala") == False

def test_consonant_start():
    assert is_word("kakataka") == False
    assert is_word("bububu") == False


from practice_questions import cycle
def test_small():
    lst = [1,2,3]
    g = cycle(lst)
    assert next(g) == lst
    assert next(g) == [2,3,1]
    assert next(g) == [3,1,2]

def test_big():
    n = 5000
    lst = list(range(n))
    g = cycle(lst)
    for j in range(n):
        lst2 = next(g)
    assert lst2[0] == n-1
    lst3 = next(g)
    assert lst3==lst