def METHOD_NAME(self):
    for a in self.randombitarrays():
        s = BitArray(a)
        for _ in range(10):
            i = randint(0, len(s))
            j = randint(0, len(s))
            v = randint(0, 1)
            s[i:j] = a[i:j] = v
            self.check(s, a)