def METHOD_NAME(self):
    class Table(Structure):
        _fields_ = [("a", c_int),
                    ("b", c_int),
                    ("c", c_int)]
    pt = pointer(Table(1, 2, 3))
    self.assertEqual(pt.contents.a, 1)
    self.assertEqual(pt.contents.b, 2)
    self.assertEqual(pt.contents.c, 3)
    pt.contents.c = 33
    from ctypes import _pointer_type_cache
    del _pointer_type_cache[Table]