code: def test_evals(self):
      assert_almost_equal(self.res.eig, self.eig_m)
  
imports: import os
  import warnings
  import numpy
  from numpy.testing import assert_almost_equal, assert_equal
  import pandas
  import pytest
  from statsmodels.tools.sm_exceptions import HypothesisTestWarning
  from statsmodels.tsa.vector_ar.vecm import coint_johansen
label_desc: Use image node_id 3 for calling the TestCointJoh12 obj's underlying member method code with example usage: obj.test_evals() without return types