code: def test_simple_stored():
      schema = fields.Schema(
          a=fields.ID(stored=True), b=fields.ID(stored=False)
      )
      ix = RamStorage().create_index(schema)
      with ix.writer() as w:
          w.add_document(a=u("alfa"), b=u("bravo"))
      with ix.searcher() as s:
          sf = s.stored_fields(0)
          assert sf == {"a": "alfa"}
  
imports: from __future__ import with_statement
  import random
  from collections import defaultdict
  from datetime import datetime
  import pytest
  from whoosh import analysis, fields, index, qparser, query, __version__
  from whoosh.compat import b, u, xrange, text_type, permutations
  from whoosh.filedb.filestore import RamStorage
  from whoosh.writing import IndexingError
  from whoosh.util.numeric import length_to_byte, byte_to_length
  from whoosh.util.testing import TempIndex, TempStorage
label_desc: Use image node_id 22 for calling a global function with example usage: test_simple_stored() without return types