def METHOD_NAME(self):
    """Test the behaviour of the sessionizer when given zero events."""
    index = "test_index"
    sketch_id = 1
    analyzer = SessionizerSketchPlugin(index, sketch_id)
    analyzer.datastore.client = mock.Mock()
    datastore = analyzer.datastore
    _create_mock_event(datastore, 0, 0)
    message = analyzer.run()
    self.assertEqual(
        message, "Sessionizing completed, number of session created: 0"
    )