def METHOD_NAME(self):
    test_n = 10
    test([50, 50, 50, 50], multiplication, subtraction)
    for i in range(test_n):
        n = random.randint(1,4)
        shape = []
        for j in range(n):
            shape.append(random.randint(1,50))
        test(shape, get_random_op(), get_random_op())