def METHOD_NAME(empty_model, inst_spill):
    """
    That shouldn't get broken!
    """
    model = empty_model
    model.spills += inst_spill
    model.full_run()
    results = model.outputters[0]
    data = results.data_buffer.certain
    # there should be 100 Elements at all times
    for ts in data:
        assert len(ts['mass']) == NUM_ELEMENTS