old_contents: from dirdiff import compare
  
  
  def test_compare_smoke():
      assert compare(None, None) == []
  
  
  def test_compare_disk():
      expected = [
          'src/alanis_moriset.mp3'
      ]
      assert compare('test_data/1/src', 'test_data/1/dest') == expected
  
new_contents: import pytest
  
  from dirdiff import compare
  
  
  def test_compare_smoke():
      assert compare(None, None) == []
  
  
  def test_compare_disk():
      expected = [
          'src/alanis_moriset.mp3'
      ]
      assert compare('test_data/1/src', 'test_data/1/dest') == expected
  
  
  def test_compare_non_existent_directory():
      with pytest.raises(OSError):
          compare('test_data/1/src', 'test_data/1/sanmiguel')
  
subject: Add test_empty_dir