def METHOD_NAME():
    r"""Test the Lundquist_number function in dimensionless.py."""
    L = 0.05 * u.m
    rho = 1490 * u.kg / u.m**3
    sigma = 1e8 * u.S / u.m
    Lundquist_number(L, B, rho, sigma).unit.is_equivalent(u.dimensionless_unscaled)
    with pytest.warns(u.UnitsWarning):
        Lundquist_number(3.3, B, rho, sigma)
    with pytest.raises(u.UnitTypeError):
        Lundquist_number(3.3 * u.kg, B, rho, sigma)