class_docstr: Unit tests for Agent class
code: def test_call_prompt_max_retries_exceeds(self, agent: Agent):
      # raises exception every time
      agent._lake.llm.call = Mock()
      agent._lake.llm.call.side_effect = Exception("Raise an exception")
      with pytest.raises(Exception):
          agent._call_llm_with_prompt("Test Prompt")
  
      assert agent._lake.llm.call.call_count == 3
  
imports: from typing import Optional
  from unittest.mock import Mock
  from pandasai.agent import Agent
  import pandas
  import pytest
  from pandasai.llm.fake import FakeLLM
  from pandasai.prompts.clarification_questions_prompt import ClarificationQuestionPrompt
  from pandasai.prompts.explain_prompt import ExplainPrompt
  from pandasai.smart_datalake import SmartDatalake
label_desc: Use image node_id 14 for calling the TestAgent obj's underlying member method code with example usage: obj.test_call_prompt_max_retries_exceeds(agent) without return types