long _1000_gigabytes = 1000L * 1000L * 1000L * 1000L;
        assertEquals("1000 GB", format.format(_1000_gigabytes));
    }

    @Test
    void testSizeWithSelectedScaleUnit() {
        FileSizeFormat format = new FileSizeFormat();

        long _0_bytes = 0L;
        assertEquals("0 B", format.format(_0_bytes));