class_docstr: Swap in CDF4 file handler.
class_docstr_tok: ["Swap","in","CDF4","file","handler","."]
docstr: Mimic reader input file content.
docstr_tok: ["Mimic","reader","input","file","content","."]
code: def get_test_content(self, filename, filename_info, filename_type):
      """Mimic reader input file content."""
      file_content = {}
      file_content["/attr/data_id"] = "AFIMG"
      file_content["/attr/satellite_name"] = "NPP"
      file_content["/attr/instrument_name"] = "VIIRS"
  
      file_content["Fire Pixels/FP_latitude"] = DEFAULT_LATLON_FILE_DATA
      file_content[
          "Fire Pixels/FP_longitude"
      ] = DEFAULT_LATLON_FILE_DATA
      file_content["Fire Pixels/FP_power"] = DEFAULT_POWER_FILE_DATA
      file_content["Fire Pixels/FP_T4"] = DEFAULT_M13_FILE_DATA
      file_content["Fire Pixels/FP_T4/attr/units"] = "kelvins"
      file_content[
          "Fire Pixels/FP_confidence"
      ] = DEFAULT_DETECTION_FILE_DATA
  
      attrs = ("FP_latitude", "FP_longitude", "FP_T13", "FP_confidence")
      convert_file_content_to_data_array(
          file_content, attrs=attrs, dims=("z", "fakeDim0", "fakeDim1")
      )
      return file_content
  
imports: import io
  import os
  import unittest
  from unittest import mock
  import dask.dataframe
  import numpy
  import pandas
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.tests.reader_tests.test_netcdf_utils import FakeNetCDF4FileHandler
  from satpy.tests.utils import convert_file_content_to_data_array
label_desc: Use image node_id 1 for calling the FakeImgFiresNetCDF4FileHandler obj's underlying member method code with example usage: obj.get_test_content(filename, filename_info, filename_type) and returns: file_content