'Test not specifying a file in our extends options that the
config is valid and correctly extends from itself.'

def test_extends_file_defaults_to_self(self):

    service_dicts = load_from_filename(u'tests/fixtures/extends/no-file-specified.yml')
    self.assertEqual(service_sort(service_dicts), service_sort([{u'name': u'myweb', u'image': u'busybox', u'environment': {u'BAR': u'1', u'BAZ': u'3'}}, {u'name': u'web', u'image': u'busybox', u'environment': {u'BAZ': u'3'}}]))
