text: """
  This test verifies that vtk's Xdmf reader will read a polyhedron sample file.
  """
  
  from __future__ import print_function
  
  import os, sys
  import vtk
  from vtk.util.misc import vtkGetDataRoot
  VTK_DATA_ROOT = vtkGetDataRoot()
  
  if __name__ == "__main__":
      fnameIn = "" + str(VTK_DATA_ROOT) + "/Data/XDMF/polyhedron.xmf"
  
      xr = vtk.vtkXdmf3Reader()
      xr.CanReadFile(fnameIn)
      xr.SetFileName(fnameIn)
      xr.UpdateInformation()
      xr.Update()
      ds = xr.GetOutputDataObject(0)
      if not ds:
          print("Got zero output from known good file")
          sys.exit(vtk.VTK_ERROR)
  
      print(ds.GetCells())
      print(ds.GetPoints())
  