text: """Unit tests for I3Extractor class."""
  
  from graphnet.data.i3extractor import I3FeatureExtractorIceCube86, I3TruthExtractor, I3RetroExtractor
  
  # @TODO: Need to bundle the package with a dummy/test I3-file to allow for self-contained testing.
  
  def test_featureextractor_constructor():
      """Test that the default constructor works"""
      extractor = I3FeatureExtractorIceCube86("pulsemap")
      assert extractor is not None
  
  def test_truthextractor_constructor():
      """Test that the default constructor works"""
      extractor = I3TruthExtractor()
      assert extractor is not None
  
  def test_retroextractor_constructor():
      """Test that the default constructor works"""
      extractor = I3RetroExtractor()
      assert extractor is not None
  