code: def test_execute_func_execute_code_success(
      self, sample_df: pd.DataFrame, tracker: QueryExecTracker
  ):
      tracker._steps = []
  
      mock_func = Mock()
      mock_func.return_value = {"type": "dataframe", "value": sample_df}
      mock_func.__name__ = "execute_code"
  
      # Execute the mock function using execute_func
      result = tracker.execute_func(mock_func)
  
      # Check if the result is as expected
      assert result["type"] == "dataframe"
      # Check if the step was added correctly
      assert len(tracker._steps) == 1
      step = tracker._steps[0]
      assert "result" in step
      assert step["type"] == "Code Execution"
      assert step["success"] is True
  
imports: import json
  import os
  import time
  from typing import Optional
  from unittest.mock import MagicMock, Mock, patch
  import pandas
  import pytest
  from pandasai.helpers.query_exec_tracker import QueryExecTracker
  from pandasai.llm.fake import FakeLLM
  from pandasai.smart_dataframe import SmartDataframe
  from unittest import TestCase
  from datetime import datetime, timedelta
label_desc: Use image node_id 19 for calling the TestQueryExecTracker obj's underlying member method code with example usage: obj.test_execute_func_execute_code_success(sample_df, tracker) without return types