old_contents: 
  # Copyright (c) 2010-2014, GEM Foundation.
  #
  # OpenQuake is free software: you can redistribute it and/or modify it
  # under the terms of the GNU Affero General Public License as published
  # by the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # OpenQuake is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU Affero General Public License
  # along with OpenQuake.  If not, see <http://www.gnu.org/licenses/>.
  
  
  import os
  import unittest
  from openquake.commonlib import nrml
  
  
  def number_of(elem_name, tree):
      """
      Given an element name (including the namespaces prefix, if applicable),
      return the number of occurrences of the element in a given XML document.
      """
      expr = '//%s' % elem_name
      return len(tree.xpath(expr, namespaces=nrml.PARSE_NS_MAP))
  
  
  class BaseExportTestCase(unittest.TestCase):
      def _test_exported_file(self, filename):
          self.assertTrue(os.path.exists(filename))
          self.assertTrue(os.path.isabs(filename))
          self.assertTrue(os.path.getsize(filename) > 0)
  
new_contents: 
  # Copyright (c) 2010-2014, GEM Foundation.
  #
  # OpenQuake is free software: you can redistribute it and/or modify it
  # under the terms of the GNU Affero General Public License as published
  # by the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # OpenQuake is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU Affero General Public License
  # along with OpenQuake.  If not, see <http://www.gnu.org/licenses/>.
  
  
  import os
  import unittest
  from openquake.commonlib import nrml
  
  
  def number_of(elem_name, tree):
      """
      Given an element name (including the namespaces prefix, if applicable),
      return the number of occurrences of the element in a given XML document.
      """
      expr = '//%s' % elem_name
      return len(tree.xpath(expr, namespaces={'nrml': nrml.NRML05}))
  
  
  class BaseExportTestCase(unittest.TestCase):
      def _test_exported_file(self, filename):
          self.assertTrue(os.path.exists(filename))
          self.assertTrue(os.path.isabs(filename))
          self.assertTrue(os.path.getsize(filename) > 0)
  
subject: Fix a broken export test