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def test_tetra_sphere(n=16):
points, cells = meshzoo.tetra_sphere(n)
# import meshio
# meshio.write_points_cells("out.vtk", points, {"triangle": cells})
assert len(points) == 514
assert _near_equal(numpy.sum(points, axis=0), [0.0, 0.0, 0.0])
assert len(cells) == 1024