code: def test_kie_parsers(self):
      parser = WildreceiptKIEAnnParser(split="train")
      samples = parser.parse_files(self.root.name, self.anno)
      self.assertEqual(len(samples), 1)
  
file_path: mmocr/tests/test_datasets/test_preparers/test_parsers/test_wildreceipt_parsers.py
imports: import json
  import os.path
  import tempfile
  import unittest
  from mmocr.datasets.preparers.parsers.wildreceipt_parser import WildreceiptKIEAnnParser, WildreceiptTextDetAnnParser
  from mmocr.utils import list_to_file
label_desc: Use image node_id 3 for calling the TestWildReceiptParsers obj's underlying member method code with example usage: obj.test_kie_parsers() without return types