code: def test_operations(self):
      static_covs = pd.DataFrame([[0, 1]], columns=["st1", "st2"])
      ts = TimeSeries.from_values(
          values=np.random.random((10, 2))
      ).with_static_covariates(static_covs)
  
      # arithmetics with series (left) and non-series (right)
      self.helper_test_cov_transfer(ts, ts / 3)
      self.helper_test_cov_transfer(ts, ts * 3)
      self.helper_test_cov_transfer(ts, ts**3)
      self.helper_test_cov_transfer(ts, ts + 3)
      self.helper_test_cov_transfer(ts, ts - 3)
  
      # conditions
      self.helper_test_cov_transfer_xa(ts, ts < 3)
      self.helper_test_cov_transfer_xa(ts, ts >= 3)
      self.helper_test_cov_transfer_xa(ts, ts > 3)
      self.helper_test_cov_transfer_xa(ts, ts >= 3)
  
      # arithmetics with non-series (left) and series (right)
      self.helper_test_cov_transfer(ts, 3 * ts)
      self.helper_test_cov_transfer(ts, 3 + ts)
      self.helper_test_cov_transfer(ts, 3 - ts)
      # conditions
      self.helper_test_cov_transfer_xa(ts, 3 > ts)
      self.helper_test_cov_transfer_xa(ts, 3 >= ts)
      self.helper_test_cov_transfer_xa(ts, 3 < ts)
      self.helper_test_cov_transfer_xa(ts, 3 <= ts)
  
      # arithmetics with two series
      self.helper_test_cov_transfer(ts, ts / ts)
      self.helper_test_cov_transfer(ts, ts * ts)
      self.helper_test_cov_transfer(ts, ts**ts)
      self.helper_test_cov_transfer(ts, ts + ts)
      self.helper_test_cov_transfer(ts, ts - ts)
      # conditions
      self.helper_test_cov_transfer_xa(ts, ts > ts)
      self.helper_test_cov_transfer_xa(ts, ts >= ts)
      self.helper_test_cov_transfer_xa(ts, ts < ts)
      self.helper_test_cov_transfer_xa(ts, ts <= ts)
  
      # other operations
      self.helper_test_cov_transfer(ts, abs(ts))
      self.helper_test_cov_transfer(ts, -ts)
      self.helper_test_cov_transfer(ts, round(ts, 2))
  
imports: import copy
  import os
  import numpy
  import pandas
  import pytest
  from darts import TimeSeries, concatenate
  from darts.dataprocessing.transformers import BoxCox, Scaler
  from darts.timeseries import DEFAULT_GLOBAL_STATIC_COV_NAME, STATIC_COV_TAG
  from darts.utils.timeseries_generation import generate_index, linear_timeseries
label_desc: Use image node_id 13 for calling the TestTimeSeriesStaticCovariate obj's underlying member method code with example usage: obj.test_operations() without return types