code: def test_get(self):
      image = self.create()
      self.assertEqual(image.get(4, 6), self.colorlist(62, 116, 162))
      self.assertEqual(image.get(0, 0), self.colorlist(0, 0, 0))
      self.assertEqual(image.get(15, 15), self.colorlist(0, 0, 0))
      self.assertRaises(tkinter.TclError, image.get, -1, 0)
      self.assertRaises(tkinter.TclError, image.get, 0, -1)
      self.assertRaises(tkinter.TclError, image.get, 16, 15)
      self.assertRaises(tkinter.TclError, image.get, 15, 16)
  
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 26 for calling the PhotoImageTest obj's underlying member method code with example usage: obj.test_get() without return types