class_docstr: Test base class with writing a fake file.
class_docstr_tok: ["Test","base","class","with","writing","a","fake","file","."]
code: def _get_dataset(self, dataset_id):
      fh = HRPTFile(self.filename, {}, {})
      return fh.get_dataset(dataset_id, {})
  
imports: import os
  import unittest
  from contextlib import suppress
  from tempfile import NamedTemporaryFile
  from unittest import mock
  import numpy
  import xarray
  from satpy.readers.hrpt import HRPTFile, dtype
  from satpy.tests.reader_tests.test_avhrr_l1b_gaclac import PygacPatcher
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 3 for calling the TestHRPTWithFile obj's underlying member method code with example usage: obj._get_dataset(dataset_id) and returns: fh