old_contents: #!/usr/bin/env python
  
  """
  This file tests vtk.util.vtkImageExportToArray and
  vtk.util.vtkImageImportFromArray.  It tests the code by first
  exporting a PNG image to a Numeric Array and then converts the array
  to an image and compares that image to the original image.  It does
  this for all PNG images in a particular directory.
  
  The test naturally requires Numeric Python to be installed:
    http://numpy.sf.net
  
  Run this test like so:
  vtkpython TestNumericArrayImageData.py -B $VTK_DATA_ROOT/Baseline/Imaging
  
  """
  
  # This test requires Numeric.
  import sys
  try:
      import Numeric
  except ImportError:
      print "This test requires Numeric Python: http://numpy.sf.net"
      sys.exit(1)
  
  import os
  import glob
  import vtk
  from vtk.test import Testing
  from vtk.util.vtkImageExportToArray import vtkImageExportToArray
  from vtk.util.vtkImageImportFromArray import vtkImageImportFromArray
  
  
  class TestNumericArrayImageData(Testing.vtkTest):
      def testImportExport(self):
          "Testing if images can be imported to and from numeric arrays."
          imp = vtkImageImportFromArray()
          exp = vtkImageExportToArray()
          idiff = vtk.vtkImageDifference()
  
          img_dir = Testing.getAbsImagePath("")
          for i in glob.glob(os.path.join(img_dir, "*.png")):
              # Putting the reader outside the loop causes bad problems.
              reader = vtk.vtkPNGReader()
              reader.SetFileName(i)
              reader.Update()
  
              # convert the image to a Numeric Array and convert it back
              # to an image data.
              exp.SetInputConnection(reader.GetOutputPort())
              imp.SetArray(exp.GetArray())
  
              # ensure there is no difference between orig image and the
              # one we converted and un-converted.
              idiff.SetInputConnection(imp.GetOutputPort())
              idiff.SetImage(reader.GetOutput())
              idiff.Update()
              err = idiff.GetThresholdedError()
  
              msg = "Test failed on image %s, with threshold "\
                    "error: %d"%(i, err)
              self.assertEqual(err, 0.0, msg)
  
  
  if __name__ == "__main__":
      Testing.main([(TestNumericArrayImageData, 'test')])
  
new_contents: #!/usr/bin/env python
  
  """
  This file tests vtk.util.vtkImageExportToArray and
  vtk.util.vtkImageImportFromArray.  It tests the code by first
  exporting a PNG image to a Numeric Array and then converts the array
  to an image and compares that image to the original image.  It does
  this for all PNG images in a particular directory.
  
  The test naturally requires Numeric Python to be installed:
    http://numpy.sf.net
  
  Run this test like so:
  vtkpython TestNumericArrayImageData.py -B $VTK_DATA_ROOT/Baseline/Imaging
  
  """
  
  # This test requires Numeric.
  import sys
  try:
      import numpy.core.numeric as numeric
  except ImportError:
      print "This test requires Numeric Python: http://numpy.sf.net"
      sys.exit(1)
  
  import os
  import glob
  import vtk
  from vtk.test import Testing
  from vtk.util.vtkImageExportToArray import vtkImageExportToArray
  from vtk.util.vtkImageImportFromArray import vtkImageImportFromArray
  
  
  class TestNumericArrayImageData(Testing.vtkTest):
      def testImportExport(self):
          "Testing if images can be imported to and from numeric arrays."
          imp = vtkImageImportFromArray()
          exp = vtkImageExportToArray()
          idiff = vtk.vtkImageDifference()
  
          img_dir = Testing.getAbsImagePath("")
          for i in glob.glob(os.path.join(img_dir, "*.png")):
              # Putting the reader outside the loop causes bad problems.
              reader = vtk.vtkPNGReader()
              reader.SetFileName(i)
              reader.Update()
  
              # convert the image to a Numeric Array and convert it back
              # to an image data.
              exp.SetInputConnection(reader.GetOutputPort())
              imp.SetArray(exp.GetArray())
  
              # ensure there is no difference between orig image and the
              # one we converted and un-converted.
              idiff.SetInputConnection(imp.GetOutputPort())
              idiff.SetImage(reader.GetOutput())
              idiff.Update()
              err = idiff.GetThresholdedError()
  
              msg = "Test failed on image %s, with threshold "\
                    "error: %d"%(i, err)
              self.assertEqual(err, 0.0, msg)
  
  
  if __name__ == "__main__":
      Testing.main([(TestNumericArrayImageData, 'test')])
  
subject: fix test vtkCommonDataModelPython-TestNumericArrayImageData