text: from .helper import PillowTestCase, unittest
  import sys
  
  from PIL import Image
  
  
  @unittest.skipIf(sys.platform.startswith('win32'),
                   "Win32 does not call map_buffer")
  class TestMap(PillowTestCase):
      def test_overflow(self):
          # There is the potential to overflow comparisons in map.c
          # if there are > SIZE_MAX bytes in the image or if
          # the file encodes an offset that makes
          # (offset + size(bytes)) > SIZE_MAX
  
          # Note that this image triggers the decompression bomb warning:
          max_pixels = Image.MAX_IMAGE_PIXELS
          Image.MAX_IMAGE_PIXELS = None
  
          # This image hits the offset test.
          im = Image.open('Tests/images/l2rgb_read.bmp')
          with self.assertRaises((ValueError, MemoryError, IOError)):
              im.load()
  
          Image.MAX_IMAGE_PIXELS = max_pixels
  