code: def test_basic(self):
      res1, res2 = self.res1, self.res2
      # test both absolute and relative difference
      rtol, atol = self.params_tol
      assert_allclose(res1.params, res2.params, rtol=rtol, atol=0)
      assert_allclose(res1.params, res2.params, rtol=0, atol=atol)
  
      rtol, atol = self.bse_tol
      assert_allclose(res1.bse, res2.bse, rtol=rtol, atol=0)
      assert_allclose(res1.bse, res2.bse, rtol=0, atol=atol)
  
imports: from statsmodels.compat.python import lmap
  import numpy
  import pandas
  from scipy import stats
  import pytest
  from statsmodels.regression.linear_model import OLS
  from statsmodels.sandbox.regression import gmm
  from numpy.testing import assert_allclose, assert_equal
label_desc: Use image node_id 1 for calling the CheckGMM obj's underlying member method code with example usage: obj.test_basic() without return types