code: def test_measure(self):
      self.assertIsInstance(self.font.measure("abc"), int)
  
imports: import unittest
  import tkinter
  from tkinter import font
  from test.support import requires, gc_collect, ALWAYS_EQ
  from test.test_tkinter.support import AbstractTkTest, AbstractDefaultRootTest
label_desc: Use image node_id 7 for calling the FontTest obj's underlying member method code with example usage: obj.test_measure() without return types