code: def test_getsize(self):
      filename = os_helper.TESTFN
      self.addCleanup(os_helper.unlink, filename)
  
      create_file(filename, b"Hello")
      self.assertEqual(self.pathmodule.getsize(filename), 5)
      os.remove(filename)
  
      create_file(filename, b"Hello World!")
      self.assertEqual(self.pathmodule.getsize(filename), 12)
  
imports: import genericpath
  import os
  import sys
  import unittest
  import warnings
  from test.support import is_emscripten
  from test.support import os_helper
  from test.support import warnings_helper
  from test.support.script_helper import assert_python_ok
  from test.support.os_helper import FakePath
label_desc: Use image node_id 3 for calling the GenericTest obj's underlying member method code with example usage: obj.test_getsize() without return types