def METHOD_NAME():
    """Assert the basic functions of estimate_mass"""
    M = estimate_mass(cnumax, cdeltanu, cteff)
    assert M.unit == u.solMass  # Check units
    assert np.isclose(M.value, cM.n, rtol=cM.s)  # Check right answer
    # Check units on parameters
    M = estimate_mass(u.Quantity(cnumax, u.microhertz), cdeltanu, cteff)
    assert np.isclose(M.value, cM.n, rtol=cM.s)
    M = estimate_mass(cnumax, u.Quantity(cdeltanu, u.microhertz), cteff)
    assert np.isclose(M.value, cM.n, rtol=cM.s)
    M = estimate_mass(cnumax, cdeltanu, u.Quantity(cteff, u.Kelvin))
    assert np.isclose(M.value, cM.n, rtol=cM.s)
    # Check works with a random selection of appropriate units
    M = estimate_mass(
        u.Quantity(cnumax, u.microhertz).to(1 / u.day),
        u.Quantity(cdeltanu, u.microhertz).to(u.hertz),
        cteff,
    )
    assert np.isclose(M.value, cM.n, rtol=cM.s)