code: def test_large_kposdef():
      assert_raises(ValueError, LargeStateCovAR1, np.arange(10))
  
imports: import numpy
  import pandas
  import os
  import pytest
  from statsmodels.tsa.statespace import mlemodel, sarimax
  from statsmodels import datasets
  from numpy.testing import assert_equal, assert_allclose, assert_raises
label_desc: Use image node_id 1 for calling a global function with example usage: test_large_kposdef() without return types