code: def img_7x7():
      """
      Generates a gs image 7x7. It is all ones, besides the edges
  
      Returns
      -------
      out : ndarray
          6x6 uint8 image
      """
  
      return gen_gs_img_black_edge(7, 7)
  
file_path: solt/tests/fixtures.py
imports: import pytest
  import numpy
  from .utils import gen_gs_img_black_edge
label_desc: Use image node_id 12 for calling a global function with example usage: img_7x7() and returns: gen_gs_img_black_edge