code: def test_copy(self):
      image = self.create()
      image2 = image.copy()
      self.assertEqual(image2.width(), 16)
      self.assertEqual(image2.height(), 16)
      self.assertEqual(image.get(4, 6), image.get(4, 6))
  
imports: import unittest
  import tkinter
  from test import support
  from test.support import os_helper
  from test.test_tkinter.support import AbstractTkTest, AbstractDefaultRootTest, requires_tk
label_desc: Use image node_id 22 for calling the PhotoImageTest obj's underlying member method code with example usage: obj.test_copy() without return types