new_contents: import pytest
  
  from leak.version_parser import versions_split
  
  
  def test_versions_split():
      pass
  
  
  def test_wrong_versions_split():
      # too many dots
      assert versions_split('1.2.3.4') == [0, 0, 0]
  
      # test missing numeric version
      with pytest.raises(ValueError):
          versions_split('not.numeric')
  
      # test not string provided
      with pytest.raises(AttributeError):
          versions_split(12345)
  
subject: Add some dummy test for negative cases when version splitting