code: def test_InsertText(self) -> None:
      aug_inserted_text = txtaugs.InsertText(seed=42)(
          self.texts,
          metadata=self.metadata,
          insert_text=["wolf", "sheep"],
      )
  
      self.assertEqual(
          aug_inserted_text,
          [
              "wolf The quick brown 'fox' couldn't jump over the green, grassy hill."
          ],
      )
  
      self.assertTrue(
          are_equal_metadata(
              self.metadata, self.expected_metadata["insert_text"]
          ),
      )
  
imports: import json
  import os
  import random
  import unittest
  from typing import Any, Dict, List
  from augly import text
  from augly.utils import TEXT_METADATA_PATH
label_desc: Use image node_id 10 for calling the TransformsTextUnitTest obj's underlying member method code with example usage: obj.test_InsertText() without return types