new_contents: """ test data_checksums"""
  from nose.tools import assert_equal
  
  
  def test_data_checksums():
      from pyne.data import data_checksums
      assert_equal(len(data_checksums), 6)
      assert_equal(data_checksums['/neutron/simple_xs'], '3d6e086977783dcdf07e5c6b0c2416be')
subject: Add basic test of data_checksums