code: def test_rbf_interpolation():
      for function in FUNCTIONS:
          check_rbf1d_interpolation(function)
          check_rbf2d_interpolation(function)
          check_rbf3d_interpolation(function)
  
imports: import numpy
  from numpy.testing import assert_, assert_array_almost_equal, assert_almost_equal
  from numpy import linspace, sin, cos, random, exp, allclose
  from scipy.interpolate._rbf import Rbf
label_desc: Use image node_id 4 for calling a global function with example usage: test_rbf_interpolation() without return types