code: def test_pad():
      arr = np.ones((10, 10))
      trans = affine.Affine(1.0, 0.0, 0.0, 0.0, -1.0, 10.0)
      arr2, trans2 = rasterio.pad(arr, trans, 2, "edge")
      assert arr2.shape == (14, 14)
      assert trans2.xoff == -2.0
      assert trans2.yoff == 12.0
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_pad() without return types