code: def test_make_prompt(self, prompt):
      x = text_service._make_text_prompt(prompt)
      self.assertIsInstance(x, glm.TextPrompt)
      self.assertEqual("Hello how are", x.text)
  
imports: import copy
  import math
  import unittest
  import unittest.mock
  import google.ai.generativelanguage
  from google.generativeai import text
  from google.generativeai import client
  from google.generativeai.types import safety_types
  from google.generativeai.types import model_types
  from absl.testing import absltest
  from absl.testing import parameterized
label_desc: Use image node_id 2 for calling the UnitTests obj's underlying member method code with example usage: obj.test_make_prompt(prompt) without return types