How to use the bitstring.ByteStore function in bitstring

def testOneSingleByte(self):
        s = ByteStore(bytearray([1, 0]), 2, 7)
        t = ByteStore(bytearray([64]), 2, 1)
        self.assertTrue(equal(s, t))
        self.assertTrue(equal(t, s))

def testBothSingleByte(self):
        s = ByteStore(bytearray([128]), 3, 0)
        t = ByteStore(bytearray([64]), 3, 1)
        u = ByteStore(bytearray([32]), 3, 2)
        self.assertTrue(equal(s, t))
        self.assertTrue(equal(s, u))
        self.assertTrue(equal(u, t))

def testOneSingleByte(self):
        s = ByteStore(bytearray([1, 0]), 2, 7)
        t = ByteStore(bytearray([64]), 2, 1)
        self.assertTrue(equal(s, t))
        self.assertTrue(equal(t, s))

def testBothSingleByte(self):
        s = ByteStore(bytearray([128]), 3, 0)
        t = ByteStore(bytearray([64]), 3, 1)
        u = ByteStore(bytearray([32]), 3, 2)
        self.assertTrue(equal(s, t))
        self.assertTrue(equal(s, u))
        self.assertTrue(equal(u, t))

def testStraightCopy(self):
        s = ByteStore(bytearray([10, 5, 1]), 24, 0)
        t = offsetcopy(s, 0)
        self.assertEqual(t._rawarray, bytearray([10, 5, 1]))

def testBothSingleByte(self):
        s = ByteStore(bytearray([128]), 3, 0)
        t = ByteStore(bytearray([64]), 3, 1)
        u = ByteStore(bytearray([32]), 3, 2)
        self.assertTrue(equal(s, t))
        self.assertTrue(equal(s, u))
        self.assertTrue(equal(u, t))

def testOffsetIncrease(self):
        s = ByteStore(bytearray([1, 1, 1]), 24, 0)
        t = offsetcopy(s, 4)
        self.assertEqual(t.bitlength, 24)
        self.assertEqual(t.offset, 4)
        self.assertEqual(t._rawarray, bytearray([0, 16, 16, 16]))