docstr: Test the extract_img_paths function with mixed case image extensions.
docstr_tok: ["Test","the","extract_img_paths","function","with","mixed","case","image","extensions","."]
code: def test_mixed_case(self):
      """
      Test the extract_img_paths function with mixed case image extensions.
      """
      paragraph = "Mixed case extensions http://example.com/image.JPG and http://example.com/image.Png."
      expected_output = [
          "http://example.com/image.JPG",
          "http://example.com/image.Png",
      ]
      result = extract_img_paths(paragraph)
      self.assertEqual(result, expected_output)
  
imports: import base64
  import os
  import pdb
  import unittest
  from unittest.mock import patch
  import pytest
  import requests
label_desc: Use image node_id 3 for calling the TestExtractImgPaths obj's underlying member method code with example usage: obj.test_mixed_case() without return types