class_docstr: Test CLAVR-X Reader with Geo files.
class_docstr_tok: ["Test","CLAVR-X","Reader","with","Geo","files","."]
docstr: Test basic initialization.
docstr_tok: ["Test","basic","initialization","."]
code: def test_reader_creation(self, filenames, expected_loadables):
      """Test basic initialization."""
      from satpy.readers import load_reader
  
      with mock.patch("satpy.readers.clavrx.xr.open_dataset") as od:
          od.side_effect = fake_test_content
          r = load_reader(self.reader_configs)
          loadables = r.select_files_from_pathnames(filenames)
          assert len(loadables) == expected_loadables
          r.create_filehandlers(loadables)
          # make sure we have some files
          assert r.file_handlers
  
file_path: satpy/satpy/tests/reader_tests/test_clavrx_nc.py
imports: import os
  from unittest import mock
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition
label_desc: Use image node_id 2 for calling the TestCLAVRXReaderGeo obj's underlying member method code with example usage: obj.test_reader_creation(filenames, expected_loadables) without return types