code: def test_misc():
      # Check that no arguments results in all zero orders
      spec = specification.SARIMAXSpecification()
      assert_equal(spec.order, (0, 0, 0))
      assert_equal(spec.seasonal_order, (0, 0, 0, 0))
  
      # Check for repr
      spec = specification.SARIMAXSpecification(
          endog=pd.Series([0], name="y"),
          exog=pd.DataFrame([[0, 0]], columns=["x1", "x2"]),
          order=(1, 1, 2),
          seasonal_order=(2, 1, 0, 12),
          enforce_stationarity=False,
          enforce_invertibility=False,
          concentrate_scale=True,
      )
      desired = (
          "SARIMAXSpecification(endog=y, exog=['x1', 'x2'],"
          " order=(1, 1, 2), seasonal_order=(2, 1, 0, 12),"
          " enforce_stationarity=False, enforce_invertibility=False,"
          " concentrate_scale=True)"
      )
      assert_equal(repr(spec), desired)
  
file_path: statsmodels/statsmodels/tsa/arima/tests/test_specification.py
imports: import numpy
  import pandas
  import pytest
  from numpy.testing import assert_equal, assert_allclose, assert_raises
  from statsmodels.tsa.statespace.tools import constrain_stationary_univariate, unconstrain_stationary_univariate
  from statsmodels.tsa.arima import specification
label_desc: Use image node_id 6 for calling a global function with example usage: test_misc() without return types