def test_holt_winters(self): timespan = 3600 * 24 * 8 # 8 days stop = int(time.time()) step = 100 series = TimeSeries('foo.bar', stop - timespan, stop, step, [x**1.5 for x in range(0, timespan, step)]) series[10] = None series.pathExpression = 'foo.bar' self.write_series(series, [(100, timespan)]) ctx = { 'startTime': parseATTime('-1d'), } analysis = functions.holtWintersForecast(ctx, [series]) self.assertEqual(len(analysis), 1) analysis = functions.holtWintersConfidenceBands(ctx, [series]) self.assertEqual(len(analysis), 2) analysis = functions.holtWintersConfidenceArea(ctx, [series]) self.assertEqual(len(analysis), 2) analysis = functions.holtWintersAberration(ctx, [series]) self.assertEqual(len(analysis), 1)