code: def test_CubicHermiteSpline_correctness():
      x = [0, 2, 7]
      y = [-1, 2, 3]
      dydx = [0, 3, 7]
      s = CubicHermiteSpline(x, y, dydx)
      assert_allclose(s(x), y, rtol=1e-15)
      assert_allclose(s(x, 1), dydx, rtol=1e-15)
  
imports: import warnings
  import io
  import numpy
  from numpy.testing import assert_almost_equal, assert_array_equal, assert_array_almost_equal, assert_allclose, assert_equal, assert_
  from pytest import raises
  from scipy.interpolate import KroghInterpolator, krogh_interpolate, BarycentricInterpolator, barycentric_interpolate, approximate_taylor_polynomial, CubicHermiteSpline, pchip, PchipInterpolator, pchip_interpolate, Akima1DInterpolator, CubicSpline, make_interp_spline
label_desc: Use image node_id 6 for calling a global function with example usage: test_CubicHermiteSpline_correctness() without return types