def test_intersect(self, config):
        """Tests slice intersection between two series with datetime or range index with identical and
        mixed frequencies."""
        freq, mixed_freq = config
        self.helper_test_intersect(freq, mixed_freq, is_univariate=True)
Tests slice intersection between two series with datetime or range index with identical and
        mixed frequencies.
darts/tests/test_timeseries.py