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

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

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

#[test]
fn atmospheric_probe_relay() {
    let o = titanss::missions::orbiters::titan_atmospheric_probe();
    assert!(o.altitude_km > 1_000.0);
}

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