code: def test_image_names(self):
      image_names = self.root.image_names()
      self.assertIsInstance(image_names, tuple)
  
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 2 for calling the MiscTest obj's underlying member method code with example usage: obj.test_image_names() without return types