class_docstr: Swap-in HDF5 File Handler.
class_docstr_tok: ["Swap-in","HDF5","File","Handler","."]
docstr: Mimic reader input file content.
docstr_tok: ["Mimic","reader","input","file","content","."]
code: def get_test_content(self, filename, filename_info, filetype_info):
      """Mimic reader input file content."""
      if filename_info["platform_id"] == "FY3B":
          return self._make_file(
              "FY3B",
              "",
              "",
              "Emmisive_Centroid_Wave_Number",
              "milliWstts/m^2/cm^(-1)/steradian",
          )
      return self._make_file(
          filename_info["platform_id"],
          "Geolocation/",
          "Data/",
          "Emissive_Centroid_Wave_Number",
          "none",
      )
  
imports: import os
  import unittest
  from unittest import mock
  import dask.array
  import numpy
  import xarray
  from satpy.tests.reader_tests.test_hdf5_utils import FakeHDF5FileHandler
label_desc: Use image node_id 3 for calling the FakeHDF5FileHandler2 obj's underlying member method code with example usage: obj.get_test_content(filename, filename_info, filetype_info) and returns: self, self