def METHOD_NAME(self):
    """
    Test the file reloading is working.
    """
    filenames = ['../input/diffusion_1.e', '../input/diffusion_2.e']
    common = 'common.e'
    shutil.copy(filenames[0], common)
    reader = chigger.exodus.ExodusReader(common)
    reader.update()
    self.assertEqual(reader.getVTKReader().GetNumberOfTimeSteps(), 2)
    shutil.copy(filenames[1], common)
    reader.update()
    self.assertEqual(reader.getVTKReader().GetNumberOfTimeSteps(), 3)
    shutil.copy(filenames[0], common)
    reader.update()
    self.assertEqual(reader.getVTKReader().GetNumberOfTimeSteps(), 2)