text: from stompy.model.delft import waq_scenario
  import datetime
  
  def test_waq_timestep_timedelta():
      inputs=[100,"100","0010","5000000",5100]
  
      for x in inputs:
          td=waq_scenario.waq_timestep_to_timedelta(x)
          ts=waq_scenario.timedelta_to_waq_timestep(td)
          td2=waq_scenario.waq_timestep_to_timedelta(ts)
          assert td == td2
  