code: def test_ellipse_model_invalid_input():
      with testing.raises(ValueError):
          EllipseModel().estimate(np.empty((5, 3)))
  
imports: import numpy
  import pytest
  from skimage._shared import testing
  from skimage._shared._warnings import expected_warnings
  from skimage._shared.testing import arch32, assert_almost_equal, assert_array_less, assert_equal, xfail
  from skimage.measure import CircleModel, EllipseModel, LineModelND, ransac
  from skimage.measure.fit import _dynamic_max_trials
  from skimage.transform import AffineTransform
label_desc: Use image node_id 13 for calling a global function with example usage: test_ellipse_model_invalid_input() without return types