old_contents: # coding: utf-8
  
  """ test reading/writing potentials to files """
  
  from __future__ import division, print_function
  
  __author__ = "adrn <adrn@astro.columbia.edu>"
  
  # Standard library
  import os, sys
  
  # Third-party
  import numpy as np
  from astropy import log as logger
  import astropy.units as u
  
  # Project
  from ..io import read, write
  from ..builtin import IsochronePotential
  from ...units import galactic
  
  # TODO: config item to specify path to test data?
  test_data_path = os.path.abspath(os.path.join(os.path.split(__file__)[0],
                                   "../../../test-data/"))
  
  def test_read():
      f1 = os.path.join(test_data_path, 'potential', 'isochrone.yml')
      potential = read(f1)
      assert np.allclose(potential.parameters['m'], 1E11)
      assert np.allclose(potential.parameters['b'], 0.76)
  
      f2 = os.path.join(test_data_path, 'potential', 'pw14.yml')
      potential = read(f2)
  
  def test_write():
  
      tmp_filename = "/tmp/potential.yml"
  
      # try a simple potential
      potential = IsochronePotential(m=1E11, b=0.76, units=galactic)
  
      with open(tmp_filename,'w') as f:
          write(potential, f)
  
      write(potential, tmp_filename)
  
new_contents: # coding: utf-8
  
  """ test reading/writing potentials to files """
  
  from __future__ import division, print_function
  
  __author__ = "adrn <adrn@astro.columbia.edu>"
  
  # Standard library
  import os
  
  # Third-party
  import numpy as np
  
  # Project
  from ..io import read, write
  from ..builtin import IsochronePotential
  from ...units import galactic
  
  # TODO: config item to specify path to test data?
  test_data_path = os.path.abspath(os.path.join(os.path.split(__file__)[0],
                                   "../../../test-data/"))
  
  def test_read():
      f1 = os.path.join(test_data_path, 'potential', 'isochrone.yml')
      potential = read(f1)
      assert np.allclose(potential.parameters['m'], 1E11)
      assert np.allclose(potential.parameters['b'], 0.76)
  
      f2 = os.path.join(test_data_path, 'potential', 'pw14.yml')
      potential = read(f2)
  
  def test_write():
  
      tmp_filename = "/tmp/potential.yml"
  
      # try a simple potential
      potential = IsochronePotential(m=1E11, b=0.76, units=galactic)
  
      with open(tmp_filename,'w') as f:
          write(potential, f)
  
      write(potential, tmp_filename)
  
subject: remove old imports