code: def test_spherical_jn_exact(self):
      # https://dlmf.nist.gov/10.49.E3
      # Note: exact expression is numerically stable only for small
      # n or z >> n.
      x = np.array([0.12, 1.23, 12.34, 123.45, 1234.5])
      assert_allclose(
          spherical_jn(2, x),
          (-1 / x + 3 / x**3) * sin(x) - 3 / x**2 * cos(x),
      )
  
imports: import numpy
  from numpy.testing import assert_almost_equal, assert_allclose, assert_array_almost_equal, suppress_warnings
  import pytest
  from numpy import sin, cos, sinh, cosh, exp, inf, nan, r_, pi
  from scipy.special import spherical_jn, spherical_yn, spherical_in, spherical_kn
  from scipy.integrate import quad
label_desc: Use image node_id 1 for calling the TestSphericalJn obj's underlying member method code with example usage: obj.test_spherical_jn_exact() without return types