class_docstr: bpo-38256 - check that inputs >=4 GiB are handled correctly.
code: def test_big_buffer(self, size):
      data = b"nyan" * (_1G + 1)
      self.assertEqual(binascii.crc32(data), 1044521549)
  
imports: import unittest
  import binascii
  import array
  import re
  from test.support import bigmemtest, _1G, _4G
  from test.support.hypothesis_helper import hypothesis
label_desc: Use image node_id 1 for calling the ChecksumBigBufferTestCase obj's underlying member method code with example usage: obj.test_big_buffer(size) without return types