new_contents: from contextlib import closing
  import subprocess
  import unittest
  
  from nose.tools import eq_
  
  from minerva.test import connect
  
  
  class MinervaDump(unittest.TestCase):
      """
      Use standard Python unittest TestCase here because of the assertMultiLineEqual
      function.
      """
      def test_run(self):
          self.maxDiff = None
          with closing(connect()) as conn:
              with closing(conn.cursor()) as cursor:
                  cursor.execute("DELETE FROM trend.trendstore")
                  cursor.execute("DELETE FROM attribute_directory.attributestore")
                  cursor.execute(
                      "SELECT trend.create_trendstore("
                      "    'test-datasource',"
                      "    'test-entitytype',"
                      "    '900',"
                      "    ARRAY["
                      "        ('x', 'integer', 'test trend'),"
                      "        ('y', 'double precision', 'another test trend')"
                      "    ]::trend.trend_descr[]"
                      ")")
  
                  cursor.execute(
                      "SELECT attribute_directory.create_attributestore("
                      "    'test-datasource',"
                      "    'test-entitytype',"
                      "    ARRAY["
                      "       ('height', 'double precision', 'fictive attribute'),"
                      "       ('power', 'integer', 'another fictive attribute')"
                      "    ]::attribute_directory.attribute_descr[]"
                      ")"
                  )
  
              conn.commit()
  
          process = subprocess.Popen(['minerva-dump'], stdout=subprocess.PIPE)
          out, err = process.communicate()
  
          self.assertMultiLineEqual(out, """\
  SELECT trend.create_trendstore(
      'test-datasource',
      'test-entitytype',
      '900',
      ARRAY[
          ('x', 'integer', ''),
          ('y', 'double precision', '')
      ]::trend.trend_descr[]
  );
  
  SELECT attribute_directory.create_attributestore(
      'test-datasource',
      'test-entitytype',
      ARRAY[
          ('height', 'double precision', 'fictive attribute'),
          ('power', 'integer', 'another fictive attribute')
      ]::attribute_directory.attribute_descr[]
  );
  
  """)
  
subject: Add integration test for minerva-dump script