code: def test_init(self):
      self.assertEqual(
          self.dataset.metainfo["category"][0],
          {"id": "0", "name": "Ignore"},
      )
      self.assertEqual(self.dataset.metainfo["task_name"], "KIE")
      self.assertEqual(
          self.dataset.metainfo["dataset_type"], "WildReceiptDataset"
      )
  
imports: import unittest
  from mmocr.datasets import WildReceiptDataset
label_desc: Use image node_id 2 for calling the TestWildReceiptDataset obj's underlying member method code with example usage: obj.test_init() without return types