self.source['sl_3.03-17'].suites.append(self.suite['squeeze'])
list = newer_version('squeeze', 'sid', self.session)
self.assertEqual([('sl', '3.03-16', '3.03-17')], list)
self.source['sl_3.03-17'].suites.append(self.suite['squeeze'])
list = newer_version('squeeze', 'sid', self.session)
self.assertEqual([('sl', '3.03-16', '3.03-17')], list)