def METHOD_NAME(self):
    buf = c_buffer(32)
    buf.raw = memoryview(b"Hello, World")
    self.assertEqual(buf.value, b"Hello, World")
    self.assertRaises(TypeError, setattr, buf, "value", memoryview(b"abc"))
    self.assertRaises(ValueError, setattr, buf, "raw", memoryview(b"x" * 100))