code: def test_invalid_value(self):
      v = IntVar(self.root, name="name")
      self.root.globalsetvar("name", "value")
      with self.assertRaises((ValueError, TclError)):
          v.get()
  
imports: import unittest
  from test import support
  import gc
  import tkinter
  from tkinter import Variable, StringVar, IntVar, DoubleVar, BooleanVar, Tcl, TclError
  from test.support import ALWAYS_EQ
  from test.test_tkinter.support import AbstractDefaultRootTest
label_desc: Use image node_id 3 for calling the TestIntVar obj's underlying member method code with example usage: obj.test_invalid_value() without return types