@Test(expected = IORuntimeException.class)
    public void testReadBytes_CustomMaxSize_ExceedsLimit() throws Exception {
        final File file = tempFolder.newFile("medium.txt");
        final byte[] data = new byte[1024]; // 1KB
        final FileOutputStream out = new FileOutputStream(file);
        try {
            out.write(data);
        } finally {
            out.close();
        }