class_docstr: Unit tests for FIDUCEO MVIRI file handlers.
class_docstr_tok: ["Unit","tests","for","FIDUCEO","MVIRI","file","handlers","."]
docstr: Test file handler initialization.
docstr_tok: ["Test","file","handler","initialization","."]
code: def test_init(self, file_handler):
      """Test file handler initialization."""
      assert file_handler.projection_longitude == 57.0
      assert file_handler.mask_bad_quality is True
  
imports: from __future__ import annotations
  import os
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  import xarray
  from pyproj import CRS
  from pyresample.geometry import AreaDefinition
  from satpy.readers.mviri_l1b_fiduceo_nc import ALTITUDE, EQUATOR_RADIUS, POLE_RADIUS, DatasetWrapper, FiduceoMviriEasyFcdrFileHandler, FiduceoMviriFullFcdrFileHandler
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 1 for calling the TestFiduceoMviriFileHandlers obj's underlying member method code with example usage: obj.test_init(file_handler) without return types