def METHOD_NAME(self):
    mod1 = EModel(test_path("data/9_EDITNNC.INIT"))
    nI,nJ,nK = mod1.grid_dims()
    self.assertEqual((nI,nJ,nK), (13, 22, 11))
    nAct = mod1.active_cells()
    self.assertEqual(nAct, 2794)