docstr: Test on univariate series
docstr_tok: ["Test","on","univariate","series"]
code: def test_probabilistic_forecast_accuracy_univariate(self, config):
      """Test on univariate series"""
      model_cls, model_kwargs, err, _ = config
      model = model_cls(**model_kwargs)
      self.helper_test_probabilistic_forecast_accuracy(
          model, err, self.constant_ts, self.constant_noisy_ts
      )
  
file_path: darts/darts/tests/models/forecasting/test_probabilistic_models.py
imports: import platform
  import numpy
  import pytest
  from darts import TimeSeries
  from darts.logging import get_logger
  from darts.metrics import mae
  from darts.models import ARIMA, BATS, TBATS, CatBoostModel, ExponentialSmoothing, LightGBMModel, LinearRegressionModel, NotImportedModule, XGBModel
  from darts.tests.conftest import tfm_kwargs
  from darts.utils import timeseries_generation
label_desc: Use image node_id 2 for calling the TestProbabilisticModels obj's underlying member method code with example usage: obj.test_probabilistic_forecast_accuracy_univariate(config) without return types