class_docstr: Test case for computing HRPT navigation.
class_docstr_tok: ["Test","case","for","computing","HRPT","navigation","."]
docstr: Prepare the mocks.
code: def _prepare_mocks(
      self, Orbital, SatelliteInterpolator, get_lonlatalt
  ):
      """Prepare the mocks."""
      Orbital.return_value.get_position.return_value = (
          mock.MagicMock(),
          mock.MagicMock(),
      )
      get_lonlatalt.return_value = (
          mock.MagicMock(),
          mock.MagicMock(),
          mock.MagicMock(),
      )
      SatelliteInterpolator.return_value.interpolate.return_value = (
          self.fake_lons,
          self.fake_lats,
      )
  
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 2 for calling the TestHRPTNavigation obj's underlying member method code with example usage: obj._prepare_mocks(Orbital, SatelliteInterpolator, get_lonlatalt) without return types