3 Tests for FizzBuzz

def test_fizzbuzz():
    #http://pytest.org/latest/getting-started.html#getstarted
    assert(fizzbuzz(3, 5, 10) == '1 2 F 4 B F 7 8 F B')
    assert(fizzbuzz(2, 7, 15) == '1 F 3 F 5 F B F 9 F 11 F 13 FB 15')
    assert(fizzbuzz(6, 6, 12) == '1 2 3 4 5 FB 7 8 9 10 11 FB')