code: def test_geometric_convergence(self, a, b, x, result):
      # Test the region where we are relying on the ratio of
      #
      # (|a| + 1) * |x| / |b|
      #
      # being small. Desired answers computed using Mpmath
      assert_allclose(sc.hyp1f1(a, b, x), result, atol=0, rtol=1e-15)
  
file_path: scipy/scipy/special/tests/test_hypergeometric.py
imports: import pytest
  import numpy
  from numpy.testing import assert_allclose, assert_equal
  import scipy.special
label_desc: Use image node_id 4 for calling the TestHyp1f1 obj's underlying member method code with example usage: obj.test_geometric_convergence(a, b, x, result) without return types