code: def test_is_image():
      IMAGE = os.path.join(
          PATH_TO_MEDIA_FILES,
          "silvestri-matteo-6-C0VRsagUw-unsplash.jpg",
      )
  
      assert caer.path.is_image(IMAGE)
  
file_path: caer/tests/path/test_paths.py
imports: import os
  import caer
label_desc: Use image node_id 4 for calling a global function with example usage: test_is_image() without return types