class_docstr: Test that the parallax correction modifier works correctly.
docstr: Test that fog isn't masked or shifted.
docstr_tok: ["Test","that","fog","is","n't","masked","or","shifted","."]
code: def test_modifier_interface_fog_no_shift(self, test_area):
      """Test that fog isn't masked or shifted."""
      from satpy.modifiers.parallax import ParallaxCorrectionModifier
  
      (fake_bt, fake_cth, _) = self._get_fake_cloud_datasets(
          test_area, 50, use_dask=False
      )
  
      modif = ParallaxCorrectionModifier(
          name="parallax_corrected_dataset",
          prerequisites=[fake_bt, fake_cth],
          optional_prerequisites=[],
          debug_mode=True,
      )
  
      res = modif([fake_bt, fake_cth], optional_datasets=[])
  
      assert np.isfinite(res).all()
      np.testing.assert_allclose(res, fake_bt)
  
imports: import datetime
  import logging
  import math
  import os
  import unittest.mock
  import dask.array
  import dask.config
  import numpy
  import pyorbital.tlefile
  import pyresample.kd_tree
  import pytest
  import xarray
  from pyproj import Geod
  from pyresample import create_area_def
  import satpy.resample
  from satpy.tests.utils import xfail_skyfield_unstable_numpy2
  from satpy.writers import get_enhanced_image
label_desc: Use image node_id 5 for calling the TestParallaxCorrectionModifier obj's underlying member method code with example usage: obj.test_modifier_interface_fog_no_shift(test_area) without return types