code: def test_read_oversize(self):
      self.tempfile()
      self.run_test(
          """
              def _read_oversize(filename, size):
                  f = open(filename)
                  c =  f.read(size)
                  f.close()
                  return c""",
          self.filename,
          len(self.file_content) + 5,
          _read_oversize=[str, int],
      )
  
imports: from tempfile import mkstemp
  from pythran.tests import TestEnv
  import unittest
  from pythran.typing import List
label_desc: Use image node_id 14 for calling the TestFile obj's underlying member method code with example usage: obj.test_read_oversize() without return types