code: def test_close(self):
      pb = self.pb
      pb.top.destroy = Func()
      pb.node.destroy = Func()
      pb.close()
      self.assertTrue(pb.top.destroy.called)
      self.assertTrue(pb.node.destroy.called)
      del pb.top.destroy, pb.node.destroy
  
imports: from idlelib import pathbrowser
  import unittest
  from test.support import requires
  from tkinter import Tk
  import os.path
  import pyclbr
  import sys
  from idlelib.idle_test.mock_idle import Func
  import idlelib
  from idlelib import browser
  from idlelib.tree import TreeNode
label_desc: Use image node_id 6 for calling the PathBrowserTest obj's underlying member method code with example usage: obj.test_close() without return types