code: def test_invalid_input(self):
      with assert_raises(ValueError) as info:
          x = np.linspace(1.0, 10.0)
          y = np.linspace(1.0, 10.0)
          z = np.linspace(1.0, 10.0, num=10)
          SmoothBivariateSpline(x, y, z)
      assert "x, y, and z should have a same length" in str(info.value)
  
      with assert_raises(ValueError) as info:
          x = np.linspace(1.0, 10.0)
          y = np.linspace(1.0, 10.0)
          z = np.linspace(1.0, 10.0)
          w = np.linspace(1.0, 10.0, num=20)
          SmoothBivariateSpline(x, y, z, w=w)
      assert "x, y, z, and w should have a same length" in str(
          info.value
      )
  
      with assert_raises(ValueError) as info:
          w = np.linspace(-1.0, 10.0)
          SmoothBivariateSpline(x, y, z, w=w)
      assert "w should be positive" in str(info.value)
  
      with assert_raises(ValueError) as info:
          bbox = (-100, 100, -100)
          SmoothBivariateSpline(x, y, z, bbox=bbox)
      assert "bbox shape should be (4,)" in str(info.value)
  
      with assert_raises(ValueError) as info:
          SmoothBivariateSpline(x, y, z, kx=10, ky=10)
      assert (
          "The length of x, y and z should be at least (kx+1) * (ky+1)"
          in str(info.value)
      )
  
      with assert_raises(ValueError) as info:
          SmoothBivariateSpline(x, y, z, s=-1.0)
      assert "s should be s >= 0.0" in str(info.value)
  
      with assert_raises(ValueError) as exc_info:
          SmoothBivariateSpline(x, y, z, eps=0.0)
      assert "eps should be between (0, 1)" in str(exc_info.value)
  
      with assert_raises(ValueError) as exc_info:
          SmoothBivariateSpline(x, y, z, eps=1.0)
      assert "eps should be between (0, 1)" in str(exc_info.value)
  
imports: import numpy
  from numpy.testing import assert_equal, assert_almost_equal, assert_array_equal, assert_array_almost_equal, assert_allclose, suppress_warnings
  from pytest import raises
  from numpy import array, diff, linspace, meshgrid, ones, pi, shape
  from scipy.interpolate.fitpack import bisplrep, bisplev
  from scipy.interpolate.fitpack2 import UnivariateSpline, LSQUnivariateSpline, InterpolatedUnivariateSpline, LSQBivariateSpline, SmoothBivariateSpline, RectBivariateSpline, LSQSphereBivariateSpline, SmoothSphereBivariateSpline, RectSphereBivariateSpline
label_desc: Use image node_id 5 for calling the TestSmoothBivariateSpline obj's underlying member method code with example usage: obj.test_invalid_input() without return types