code: def test_roots_extrapolate_gh_11185():
      x = np.array([0.001, 0.002])
      y = np.array([1.66066935e-06, 1.10410807e-06])
      dy = np.array([-1.60061854, -1.600619])
      p = CubicHermiteSpline(x, y, dy)
  
      # roots(extrapolate=True) for a polynomial with a single interval
      # should return all three real roots
      r = p.roots(extrapolate=True)
      assert_equal(p.c.shape[1], 1)
      assert_equal(r.size, 3)
  
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 8 for calling a global function with example usage: test_roots_extrapolate_gh_11185() without return types