public static void deleteDirThenMkdir(String path) throws IOException {
        deleteDirectory(path);
        forceMkdir(path);
    }
@Test
    void deleteDirThenMkdir() throws IOException {
        Path path = Paths.get(TMP_PATH, UUID.randomUUID().toString());
        DiskUtils.forceMkdir(path.toString());
        
        DiskUtils.createTmpFile(path.toString(), UUID.randomUUID().toString(), ".ut");
        DiskUtils.createTmpFile(path.toString(), UUID.randomUUID().toString(), ".ut");
        
        DiskUtils.deleteDirThenMkdir(path.toString());
        
        File file = path.toFile();
        assertTrue(file.exists());
        assertTrue(file.isDirectory());
        assertTrue(file.list() == null || file.list().length == 0);
        
        file.deleteOnExit();
    }