def test_avg_with_sales_1_and_column_saleid(self): '''Test avg with: avg(saleid)''' R = Table.inputfromfile('test_csv/sales1.csv') R1 = Table.avg(R, 'saleid') self.assertIsNotNone(R1.table) sum = 0 for row in R.table: sum = sum + row['saleid'] avg = sum / len(R.table) for row in R1.table: self.assertIsNotNone(row['avg(saleid)']) self.assertEqual(row['avg(saleid)'], avg)