code: def test_repr_png(self):
      im = hopper()
  
      with Image.open(BytesIO(im._repr_png_())) as repr_png:
          assert repr_png.format == "PNG"
          assert_image_equal(im, repr_png)
  
imports: import re
  import sys
  import zlib
  from io import BytesIO
  import pytest
  from PIL import Image, ImageFile, PngImagePlugin, features
  from .helper import PillowLeakTestCase, assert_image, assert_image_equal, assert_image_equal_tofile, hopper, is_win32, mark_if_feature_version, skip_unless_feature
label_desc: Use image node_id 34 for calling the TestFilePng obj's underlying member method code with example usage: obj.test_repr_png() without return types