void testSize(long input, String expected) {
        FileSizeFormat format = new FileSizeFormat();
        assertEquals(expected, format.format(input));
    }

    static Stream<Arguments> sizeWithScaleUnitTestData() {
        return Stream.of(
                // 0 bytes
                Arguments.of(0L, null, "0 B"),
                Arguments.of(0L, ScaleUnit.BYTE, "0 B"),