code: def test_incorrect_inputs(self):
      x = np.array([1, 2, 3, 4])
      y = np.array([1, 2, 3, 4])
      xc = np.array([1 + 1j, 2, 3, 4])
      xn = np.array([np.nan, 2, 3, 4])
      xo = np.array([2, 1, 3, 4])
      yn = np.array([np.nan, 2, 3, 4])
      y3 = [1, 2, 3]
      x1 = [1]
      y1 = [1]
  
      assert_raises(ValueError, CubicSpline, xc, y)
      assert_raises(ValueError, CubicSpline, xn, y)
      assert_raises(ValueError, CubicSpline, x, yn)
      assert_raises(ValueError, CubicSpline, xo, y)
      assert_raises(ValueError, CubicSpline, x, y3)
      assert_raises(ValueError, CubicSpline, x[:, np.newaxis], y)
      assert_raises(ValueError, CubicSpline, x1, y1)
  
      wrong_bc = [
          ("periodic", "clamped"),
          ((2, 0), (3, 10)),
          ((1, 0),),
          (0.0, 0.0),
          "not-a-typo",
      ]
  
      for bc_type in wrong_bc:
          assert_raises(ValueError, CubicSpline, x, y, 0, bc_type, True)
  
      # Shapes mismatch when giving arbitrary derivative values:
      Y = np.c_[y, y]
      bc1 = ("clamped", (1, 0))
      bc2 = ("clamped", (1, [0, 0, 0]))
      bc3 = ("clamped", (1, [[0, 0]]))
      assert_raises(ValueError, CubicSpline, x, Y, 0, bc1, True)
      assert_raises(ValueError, CubicSpline, x, Y, 0, bc2, True)
      assert_raises(ValueError, CubicSpline, x, Y, 0, bc3, True)
  
      # periodic condition, y[-1] must be equal to y[0]:
      assert_raises(ValueError, CubicSpline, x, y, 0, "periodic", True)
  
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 10 for calling the TestCubicSpline obj's underlying member method code with example usage: obj.test_incorrect_inputs() without return types