code: def test_ngramwords_tokenizer():
      tk = analysis.CommaSeparatedTokenizer()
      tags = fields.NGRAMWORDS(
          minsize=3, maxsize=50, tokenizer=tk, stored=True, queryor=True
      )
      schema = fields.Schema(tags=tags)
  
imports: from __future__ import with_statement
  import pytest
  from whoosh import analysis, fields, qparser
  from whoosh.compat import b, u, unichr
  from whoosh.compat import dumps
  from whoosh.filedb.filestore import RamStorage
label_desc: Use image node_id 34 for calling a global function with example usage: test_ngramwords_tokenizer() without return types