fs_async.js
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fs_async.js
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	import { test, summary } from './helpers.js';
	import fs from 'ant:fs';
	import path from 'ant:path';

	console.log('FS Async Tests\n');

	async function run() {
	const testDir = '/tmp/ant-spec-test-async';
	const testFile = path.join(testDir, 'test.txt');

	await fs.mkdir(testDir, { recursive: true });
	test('mkdir creates dir', await fs.exists(testDir), true);

	await fs.writeFile(testFile, 'hello world');
	test('writeFile creates file', await fs.exists(testFile), true);

	const content = await fs.readFile(testFile, 'utf8');
	test('readFile content', content, 'hello world');

	const stat = await fs.stat(testFile);
	test('stat isFile', stat.isFile(), true);
	test('stat isDirectory', stat.isDirectory(), false);
	test('stat size', stat.size > 0, true);

	const dirStat = await fs.stat(testDir);
	test('stat dir isDirectory', dirStat.isDirectory(), true);

	const files = await fs.readdir(testDir);
	test('readdir length', files.length >= 1, true);
	test('readdir includes test.txt', files.includes('test.txt'), true);

	await fs.unlink(testFile);
	test('unlink removes file', await fs.exists(testFile), false);

	// fd-based open/write/close
	const fdFile = path.join(testDir, 'fd_test.txt');
	const fd = await fs.open(fdFile, 'w');
	test('open returns fd', typeof fd, 'number');

	const written = await fs.write(fd, 'hello fd');
	test('write returns bytes written', written, 8);

	const buf = new Uint8Array([33]);
	const bufWritten = await fs.write(fd, buf);
	test('write buffer returns bytes written', bufWritten, 1);

	await fs.close(fd);

	const fdContent = fs.readFileSync(fdFile, 'utf8');
	test('write wrote correct data', fdContent, 'hello fd!');

	await fs.unlink(fdFile);

	// writev
	const wvFile = path.join(testDir, 'writev_test.txt');
	const wvFd = await fs.open(wvFile, 'w');
	const bufs = [new Uint8Array([65, 66]), new Uint8Array([67, 68])];
	const wvWritten = await fs.writev(wvFd, bufs);
	test('writev returns total bytes', wvWritten, 4);
	await fs.close(wvFd);

	const wvContent = fs.readFileSync(wvFile, 'utf8');
	test('writev wrote correct data', wvContent, 'ABCD');
	await fs.unlink(wvFile);

	await fs.rmdir(testDir);
	test('rmdir removes dir', await fs.exists(testDir), false);

	summary();
	}

	void run();

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