#[test]
fn lander_concept() {
    let l = titanias::missions::landers::titania_lander_concept();
    assert!(!l.crewed);
    assert!(l.dry_mass_kg > 0.0);
}

#[test]
fn base_module_crewed() {
    let l = titanias::missions::landers::titania_base_module();
    assert!(l.crewed);
}

#[test]
fn orbiter_concept() {
    let o = titanias::missions::orbiters::titania_orbiter_concept();
    assert!(o.altitude_km > 0.0);
}

#[test]
fn polar_mapper() {
    let o = titanias::missions::orbiters::titania_polar_mapper();
    assert!(o.inclination_deg > 80.0);
}

#[test]
fn relay_coverage() {
    let r = titanias::missions::relay::titania_relay();
    assert!(r.far_side_coverage > 0.0 && r.far_side_coverage < 1.0);
}
