mod tests {
    use crate::display::BandwidthUnitFamily;

    #[test]
    fn unit_test() {
        // size < 1024 are not calculated correctly
        {
            let size = 1024.;
            assert_eq!(
                BandwidthUnitFamily::BinBytes.get_unit_for(size),
                (1024., "KiB")
            );
            assert_eq!(
                BandwidthUnitFamily::BinBits.get_unit_for(size),
                (128., "Kib")
            );
            // the next 2 `k` are lowercase
            // should  they be uppercase ?
            // they are uppercase on the next units (M G T)
            assert_eq!(
                BandwidthUnitFamily::SiBytes.get_unit_for(size),
                (1000., "kB")
            );
            assert_eq!(BandwidthUnitFamily::SiBits.get_unit_for(size), (125., "kb"));
        }
        {
            let size = 1024. * 1024.;
            assert_eq!(
                BandwidthUnitFamily::BinBytes.get_unit_for(size),
                (1048576.0, "MiB")
            );
            assert_eq!(
                BandwidthUnitFamily::BinBits.get_unit_for(size),
                (131072.0, "Mib")
            );
            assert_eq!(
                BandwidthUnitFamily::SiBytes.get_unit_for(size),
                (1000000.0, "MB")
            );
            assert_eq!(
                BandwidthUnitFamily::SiBits.get_unit_for(size),
                (125000.0, "Mb")
            );
        }
        {
            let size = 1024. * 1024. * 1024.;
            assert_eq!(
                BandwidthUnitFamily::BinBytes.get_unit_for(size),
                (1073741824.0, "GiB")
            );
            assert_eq!(
                BandwidthUnitFamily::BinBits.get_unit_for(size),
                (134217728.0, "Gib")
            );
            assert_eq!(
                BandwidthUnitFamily::SiBytes.get_unit_for(size),
                (1000000000.0, "GB")
            );
            assert_eq!(
                BandwidthUnitFamily::SiBits.get_unit_for(size),
                (125000000.0, "Gb")
            );
        }
        {
            let size = 1024. * 1024. * 1024. * 1024.;
            assert_eq!(
                BandwidthUnitFamily::BinBytes.get_unit_for(size),
                (1099511627776.0, "TiB")
            );
            assert_eq!(
                BandwidthUnitFamily::BinBits.get_unit_for(size),
                (137438953472.0, "Tib")
            );
            assert_eq!(
                BandwidthUnitFamily::SiBytes.get_unit_for(size),
                (1000000000000.0, "TB")
            );
            assert_eq!(
                BandwidthUnitFamily::SiBits.get_unit_for(size),
                (125000000000.0, "Tb")
            );
        }
    }
}