test_feels.py 文件源码

def test_sentiment_comprehensive(self):
        sentiment = 0.0
        for t in self.mock_tweets:
            if t['sentiment']!=0:
                sentiment = 0.99*sentiment + 0.01*t['sentiment']
        # calc = 0*0.99**2 + 0.01*0.99*-0.7531 + 0.01*-0.5719
        #      = -0.01299649
        self.mock_feels._latest_calc = self.mock_feels._feels.start
        self.assertTrue(np.isclose(self.mock_feels.sentiment.value, sentiment))
        # first observation is at 2017-2-19 19:14:18 and we are using default
        # 60 second bins, therefore the observation at 2017-2-21 19:14:20 will
        # never get saved but will always be recalculated.
        self.assertEqual(self.mock_feels._latest_calc,
                         datetime(2017, 2, 21, 19, 14, 0))

        # repeat the calculation, nothing changes
        self.assertTrue(np.isclose(self.mock_feels.sentiment.value, sentiment))
        self.assertEqual(self.mock_feels._latest_calc,
                         datetime(2017, 2, 21, 19, 14, 0))
        self.assertEqual(self.mock_feels.sentiment.start,
                         self.mock_feels._latest_calc)