docstr: Test whether a model that inferred a seasonality period before will do it again for a new series
docstr_tok: ["Test","whether","a","model","that","inferred","a","seasonality","period","before","will","do","it","again","for","a","new","series"]
code: def test_multiple_fit(self):
      """Test whether a model that inferred a seasonality period before will do it again for a new series"""
      series1 = tg.sine_timeseries(length=100, freq="M")
      series2 = tg.sine_timeseries(length=100, freq="D")
      model = ExponentialSmoothing()
      model.fit(series1)
      model.fit(series2)
      assert model.seasonal_periods == 7
  
file_path: darts/darts/tests/models/forecasting/test_exponential_smoothing.py
imports: import numpy
  import pytest
  from darts import TimeSeries
  from darts.models import ExponentialSmoothing
  from darts.utils import timeseries_generation
label_desc: Use image node_id 3 for calling the TestExponentialSmoothing obj's underlying member method code with example usage: obj.test_multiple_fit() without return types