old_contents: import pytest
  import cv2
  from plantcv.plantcv.morphology import segment_combine
  
  
  def test_segment_combine(morphology_test_data):
      skel = cv2.imread(morphology_test_data.skel_img, -1)
      edges = morphology_test_data.load_segments(morphology_test_data.segments_file, "edges")
      # Test with list of IDs input
      _, new_objects = segment_combine(segment_list=[0, 1], objects=edges, mask=skel)
      assert len(new_objects) + 1 == len(edges)
  
  
  def test_segment_combine_lists(morphology_test_data):
      skel = cv2.imread(morphology_test_data.skel_img, -1)
      edges = morphology_test_data.load_segments(morphology_test_data.segments_file, "edges")
      # Test with list of lists input
      _, new_objects = segment_combine(segment_list=[[0, 1, 2], [3, 4]], objects=edges, mask=skel)
      assert len(new_objects) + 3 == len(edges)
  
  
  def test_segment_combine_bad_input(morphology_test_data):
      skel = cv2.imread(morphology_test_data.skel_img, -1)
      edges = morphology_test_data.load_segments(morphology_test_data.segments_file, "edges")
      with pytest.raises(RuntimeError):
          _, new_objects = segment_combine(segment_list=[0.5, 1.5], objects=edges, mask=skel)
  
new_contents: import pytest
  import cv2
  from plantcv.plantcv.morphology import segment_combine
  
  
  def test_segment_combine(morphology_test_data):
      skel = cv2.imread(morphology_test_data.skel_img, -1)
      edges = morphology_test_data.load_segments(morphology_test_data.segments_file, "edges")
      # Test with list of IDs input
      _, new_objects = segment_combine(segment_list=[0, 1], objects=edges, mask=skel)
      assert len(new_objects) + 1 == len(edges)
  
  
  def test_segment_combine_lists(morphology_test_data):
      skel = cv2.imread(morphology_test_data.skel_img, -1)
      edges = morphology_test_data.load_segments(morphology_test_data.segments_file, "edges")
      # Test with list of lists input
      _, new_objects = segment_combine(segment_list=[[0, 1, 2], [3, 4]], objects=edges, mask=skel)
      assert len(new_objects) + 3 == len(edges)
  
  
  def test_segment_combine_bad_input(morphology_test_data):
      skel = cv2.imread(morphology_test_data.skel_img, -1)
      edges = morphology_test_data.load_segments(morphology_test_data.segments_file, "edges")
      with pytest.raises(RuntimeError):
          _ = segment_combine(segment_list=[0.5, 1.5], objects=edges, mask=skel)
  
subject: Remove unused var