// test.ts
import * as fs from 'node:fs';
import mmap from './lib/index.js';

const FILE_PATH = './test_mmap.bin';
const FILE_SIZE = 4096;

// 파일 생성
const fd = fs.openSync(FILE_PATH, 'w+');
fs.ftruncateSync(fd, FILE_SIZE);

// mmap 매핑
const buffer = mmap.map(
  FILE_SIZE,
  mmap.PROT_READ | mmap.PROT_WRITE,
  mmap.MAP_SHARED,
  fd,
  0
);

console.log('Mapped buffer length:', buffer.length);
console.log('Page size:', mmap.pageSize());

// 데이터 쓰기
buffer.write('Hello, mmap!', 0, 'utf8');
buffer.writeUInt32LE(12345, 100);

// msync
mmap.sync(buffer, 0, FILE_SIZE, mmap.MS_SYNC);
console.log('Data synced to disk');

// 데이터 읽기
console.log('String:', buffer.toString('utf8', 0, 12));
console.log('Number:', buffer.readUInt32LE(100));

// 정리
fs.closeSync(fd);
fs.unlinkSync(FILE_PATH);

console.log('Test passed!');