'Test aggregation: sum (no grouping)'

def testAggregateSum(self):

    period = self.period
    assertEqual = self.assertEqual
    totals = period.aggregate(S3TimeSeriesFact('sum', 'base'))
    assertEqual(period.rows, {})
    assertEqual(period.cols, {})
    assertEqual(period.matrix, {})
    expected_totals = [1360]
    assertEqual(period.totals, expected_totals)
    assertEqual(totals, expected_totals)
