code: def test_input_shape_flat(self, start, end):
      # geometric_slerp should handle input arrays that are
      # not flat appropriately
      with pytest.raises(ValueError, match="one-dimensional"):
          geometric_slerp(start=start, end=end, t=np.linspace(0, 1, 10))
  
imports: import numpy
  from numpy.testing import assert_allclose
  import pytest
  from scipy.spatial import geometric_slerp
label_desc: Use image node_id 3 for calling the TestGeometricSlerp obj's underlying member method code with example usage: obj.test_input_shape_flat(start, end) without return types