class_docstr: Unit tests for the GooglePalm LLM class
code: def test_call(self, mocker, prompt):
      llm = GooglePalm(api_key="test")
      expected_text = "This is the expected text."
      expected_response = MockedCompletion(expected_text)
      mocker.patch.object(
          generativeai, "generate_text", return_value=expected_response
      )
  
      result = llm.call(instruction=prompt, suffix="!")
      assert result == expected_text
  
file_path: pandas-ai/tests/llms/test_google_palm.py
imports: import re
  import pytest
  from google import generativeai
  from pandasai.exceptions import APIKeyNotFoundError
  from pandasai.llm import GooglePalm
  from pandasai.prompts import AbstractPrompt
label_desc: Use image node_id 7 for calling the TestGooglePalm obj's underlying member method code with example usage: obj.test_call(mocker, prompt) without return types