code: def test_asc_merge_3():
      """Test ascending merge"""
      hroi = make_hroi()
      hroi.set_roi_feature("labels", np.arange(9))
      hroi.set_roi_feature("labels2", np.arange(9))
      hroi.merge_ascending([1], pull_features=["labels2"])
      assert hroi.get_roi_feature("labels", 0) == 0
      assert hroi.get_roi_feature("labels2", 0) == 1
  
imports: import numpy
  from numpy.testing import assert_array_equal
  from ..discrete_domain import domain_from_binary_array
  from ..hroi import HROI_as_discrete_domain_blobs, make_hroi_from_subdomain
  from ..mroi import subdomain_from_array
label_desc: Use image node_id 8 for calling a global function with example usage: test_asc_merge_3() without return types