class_docstr: Test basic data downloading functionality.
class_docstr_tok: ["Test","basic","data","downloading","functionality","."]
docstr: Test that find_registerable finds some things.
docstr_tok: ["Test","that","find_registerable","finds","some","things","."]
code: def test_find_registerable(self, readers, writers, comp_sensors):
      """Test that find_registerable finds some things."""
      import satpy
      from satpy.aux_download import find_registerable_files
  
      with satpy.config.set(config_path=[self.tmpdir]), mock.patch(
          "satpy.aux_download._FILE_REGISTRY", {}
      ):
          found_files = find_registerable_files(
              readers=readers,
              writers=writers,
              composite_sensors=comp_sensors,
          )
  
          _assert_reader_files_downloaded(readers, found_files)
          _assert_writer_files_downloaded(writers, found_files)
          _assert_comp_files_downloaded(comp_sensors, found_files)
          _assert_mod_files_downloaded(comp_sensors, found_files)
  
imports: from unittest import mock
  import pytest
  import yaml
  from satpy.aux_download import DataDownloadMixin
  from satpy.modifiers import ModifierBase
label_desc: Use image node_id 2 for calling the TestDataDownload obj's underlying member method code with example usage: obj.test_find_registerable(readers, writers, comp_sensors) without return types