def METHOD_NAME():
    """Check if the magnitude of unit vector along
    the NumberLine is equal to its unit_size."""
    axis1 = NumberLine(unit_size=0.4)
    axis2 = NumberLine(x_range=[-2, 5], length=12)
    for axis in (axis1, axis2):
        assert np.linalg.norm(axis.get_unit_vector()) == axis.unit_size