import { assert, describe, test } from 'vite-plus/test';
import { ByteBuffer } from './ByteBuffer';

describe('ByteBuffer', async () => {
	test('base', () => {
		let buf = new ByteBuffer();
		buf.writeString('Hello');
		buf.writeString('World');
		assert.equal(buf.length, 10);
		assert.equal(buf.position, 10);
		buf.length = 5;
		assert.equal(buf.length, 5);
		buf.position = 0;
		assert.equal(buf.readString(5), 'Hello');
	});

	test('overflow max length', () => {
		let buf = new ByteBuffer();
		buf.writeBytes(new Uint8Array(1025));
		assert.equal(buf.length, 1025);
	});

	test('overflow max length tow step', () => {
		let buf = new ByteBuffer();
		buf.writeBytes(new Uint8Array(1023));
		buf.writeBytes(new Uint8Array(2));
		assert.equal(buf.length, 1025);
		console.log(`Max`, (buf.buffer as any).maxByteLength);
	});

	test('writeBytes fill zero', () => {
		let buf = new ByteBuffer();
		buf.writeBytes(new Uint8Array([1, 2]));
		buf.position = 0;
		// console.log('->', buf.position, buf.length, buf.remaining());
		// console.log(toHexDump(buf.buffer));

		// truncate to size fill zero
		buf.writeBytes(new Uint8Array([1]), 10);
		// console.log('->', buf.position, buf.length, buf.remaining());
		// console.log(toHexDump(buf.buffer));

		assert.equal(buf.view.getInt8(0), 1);
		assert.equal(buf.view.getInt8(1), 0);
		assert.equal(buf.length, 10);
	});
});