release: v0.3.2 — 质量加固 + SQL扩展 + 表达式 + 并发同步
v0.2.6 质量加固: - 修复 AriaEngine 二级索引 SSTable 互相覆盖(命名空间隔离) - 修复 LSM 多版本读取顺序错误 + MergeIterator 取最新来源 - 重写 LZ4 压缩器(往返一致性 + 缓冲区溢出) - sstableCache LRU 上限 + 预加载兜底(BufferPool 配置生效) - 修复 React/Vue 集成 import type 运行时 bug + exports 子路径 - 新增 38 个测试(LZ4往返/Crypto/集成), 删除伪测试 v0.3.0 SQL 功能扩展: - 多语句 parseAll + 事务语句 BEGIN/COMMIT/ROLLBACK - INSERT INTO ... SELECT + UNION/UNION ALL + EXISTS 关联子查询 - CREATE/DROP INDEX 五引擎实现 + 别名 WHERE 修复 - benchmark 页面 + 36 个新测试 v0.3.1 表达式与性能: - CASE WHEN 表达式(SELECT 列/WHERE/聚合) - JOIN + 关联子查询逐行绑定 - WAL 批量组提交(写放大 O(N)→O(1)) - 修复 pending frozen 可见性 + flush 缓存竞争 v0.3.2 并发: - CASE WHEN 用于 WHERE/聚合 + JOIN 哈希连接 - 多标签页同步(multiTabSync + BroadcastChannel) - IndexedDB schema 持久化(reopen 后表结构恢复) - 修复 where-matcher 顶层 $not - 修复 CJS 产物 .js 被 ESM 解析(exports 空) — .cjs 后缀 + exports 修正 - 836 测试 / 44 套件 / 81.0% 覆盖率
This commit is contained in:
thzxx
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-289
@@ -1,289 +1,289 @@
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/**
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* AriaEngine WAL + MVCC 单元测试
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*/
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import { WAL, type WALStore } from '../../src/engine/aria/wal/log';
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import { WALRecordType, type WALRecord } from '../../src/engine/aria/types';
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import { CheckpointManager, type Flushable } from '../../src/engine/aria/wal/checkpoint';
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import { MVCCManager } from '../../src/engine/aria/transaction/mvcc';
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// ===================================================================
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// WAL 存储 Mock
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// ===================================================================
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class MockWALStore implements WALStore {
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chunks: Uint8Array[] = [];
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async append(data: Uint8Array) { this.chunks.push(data); }
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async readAll(): Promise<Uint8Array> {
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const total = this.chunks.reduce((s, c) => s + c.byteLength, 0);
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const combined = new Uint8Array(total);
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let off = 0;
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for (const c of this.chunks) { combined.set(c, off); off += c.byteLength; }
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return combined;
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}
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async truncate() { this.chunks = []; }
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async exists() { return this.chunks.length > 0; }
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}
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// ===================================================================
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// WAL 测试
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// ===================================================================
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describe('AriaEngine — WAL', () => {
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it('append 记录后可恢复', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'full');
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wal.append({ type: WALRecordType.INSERT, txnId: 1, tableName: 'users', key: '1', data: { name: 'Alice' } });
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wal.append({ type: WALRecordType.INSERT, txnId: 1, tableName: 'users', key: '2', data: { name: 'Bob' } });
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const records: WALRecord[] = [];
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await wal.recover((r) => records.push(r));
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expect(records).toHaveLength(2);
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expect(records[0].tableName).toBe('users');
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expect(records[0].key).toBe('1');
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});
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it('batch 模式缓冲后 flush', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'batch');
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wal.append({ type: WALRecordType.UPDATE, txnId: 2, tableName: 'items', key: 'a', data: { v: 1 } });
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wal.append({ type: WALRecordType.DELETE, txnId: 2, tableName: 'items', key: 'b' });
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// 未 flush 前无法恢复
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let records: WALRecord[] = [];
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await wal.recover((r) => records.push(r));
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expect(records).toHaveLength(0);
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await wal.flush();
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records = [];
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await wal.recover((r) => records.push(r));
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expect(records).toHaveLength(2);
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});
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it('none 模式不记录', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, false, 'none');
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wal.append({ type: WALRecordType.INSERT, txnId: 3, tableName: 'x', key: 'y', data: {} });
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expect(store.chunks).toHaveLength(0);
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});
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it('checkpoint 清空 WAL', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'full');
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wal.append({ type: WALRecordType.CREATE_TABLE, txnId: 0, tableName: 't', key: '' });
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expect(await store.exists()).toBe(true);
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await wal.checkpoint();
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expect(await store.exists()).toBe(false);
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});
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it('getLSN 跟踪序列号', () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'full');
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expect(wal.getLSN()).toBe(0);
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wal.append({ type: WALRecordType.BEGIN, txnId: 10, tableName: '', key: '' });
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expect(wal.getLSN()).toBe(1);
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wal.append({ type: WALRecordType.COMMIT, txnId: 10, tableName: '', key: '' });
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expect(wal.getLSN()).toBe(2);
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});
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it('isEnabled 反映配置', () => {
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expect(new WAL(new MockWALStore(), true).isEnabled()).toBe(true);
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expect(new WAL(new MockWALStore(), false).isEnabled()).toBe(false);
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});
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it('多种记录类型编解码', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'full');
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wal.append({ type: WALRecordType.BEGIN, txnId: 100, tableName: '', key: '' });
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wal.append({ type: WALRecordType.INSERT, txnId: 100, tableName: 'users', key: '1', data: { x: 'hello' } });
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wal.append({ type: WALRecordType.UPDATE, txnId: 100, tableName: 'users', key: '1', data: { x: 'world' } });
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wal.append({ type: WALRecordType.COMMIT, txnId: 100, tableName: '', key: '' });
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const records: WALRecord[] = [];
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await wal.recover((r) => records.push(r));
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expect(records).toHaveLength(4);
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expect(records[0].type).toBe(WALRecordType.BEGIN);
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expect(records[1].type).toBe(WALRecordType.INSERT);
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expect(records[2].type).toBe(WALRecordType.UPDATE);
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expect(records[3].type).toBe(WALRecordType.COMMIT);
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});
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it('getBufferedCount 返回缓冲数', () => {
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const wal = new WAL(new MockWALStore(), true, 'batch');
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expect(wal.getBufferedCount()).toBe(0);
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wal.append({ type: WALRecordType.INSERT, txnId: 0, tableName: 't', key: 'k' });
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expect(wal.getBufferedCount()).toBe(1);
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});
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});
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// ===================================================================
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// Checkpoint 测试（使用安全 Mock，避免 null 引用导致 CI 卡死）
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// ===================================================================
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describe('AriaEngine — CheckpointManager', () => {
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class MockFlushable implements Flushable { flushed = false; async flushAll() { this.flushed = true; } }
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class MockLSM { flushed = false; async flush() { this.flushed = true; } }
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class MockWAL { checkpointed = false; async checkpoint() { this.checkpointed = true; } async flush() {} }
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it('tick 未达间隔不触发 checkpoint', async () => {
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const lsm = new MockLSM();
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const wal = new MockWAL();
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const flushable = new MockFlushable();
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const cm = new CheckpointManager(lsm as any, wal as any, flushable, 100);
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await cm.tick();
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await cm.tick();
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expect(cm.getOpCount()).toBe(2);
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expect(flushable.flushed).toBe(false);
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expect(lsm.flushed).toBe(false);
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});
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it('setInterval 修改间隔后 tick 触发 checkpoint', async () => {
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const lsm = new MockLSM();
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const wal = new MockWAL();
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const cm = new CheckpointManager(lsm as any, wal as any, null, 1000);
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cm.setInterval(2);
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await cm.tick();
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await cm.tick();
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expect(cm.getOpCount()).toBe(0); // reset after checkpoint
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expect(lsm.flushed).toBe(true);
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expect(wal.checkpointed).toBe(true);
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});
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it('forceCheckpoint 强制触发', async () => {
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const lsm = new MockLSM();
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const wal = new MockWAL();
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const cm = new CheckpointManager(lsm as any, wal as any, null, 100);
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await cm.forceCheckpoint();
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expect(cm.getOpCount()).toBe(0);
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expect(lsm.flushed).toBe(true);
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expect(wal.checkpointed).toBe(true);
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});
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});
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// ===================================================================
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// MVCC 测试
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// ===================================================================
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describe('AriaEngine — MVCC', () => {
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let mvcc: MVCCManager;
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beforeEach(() => { mvcc = new MVCCManager(); });
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it('beginTransaction 分配唯一 ID', () => {
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const id1 = mvcc.beginTransaction();
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const id2 = mvcc.beginTransaction();
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expect(id1).not.toBe(id2);
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expect(mvcc.isActive(id1)).toBe(true);
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expect(mvcc.isActive(id2)).toBe(true);
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});
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it('commit 后 isActive 返回 false', () => {
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const txnId = mvcc.beginTransaction();
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mvcc.commitTransaction(txnId);
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expect(mvcc.isActive(txnId)).toBe(false);
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});
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it('rollback 后 isActive 返回 false', () => {
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const txnId = mvcc.beginTransaction();
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mvcc.rollbackTransaction(txnId);
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expect(mvcc.isActive(txnId)).toBe(false);
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});
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it('writeVersion + readVersion 往返', () => {
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const txnId = mvcc.beginTransaction();
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mvcc.writeVersion('users', '1', { name: 'Alice', age: 30 }, txnId);
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const val = mvcc.readVersion('users', '1', txnId);
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expect(val).not.toBeNull();
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expect(val!.name).toBe('Alice');
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});
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it('未提交版本对其他事务不可见', () => {
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const txn1 = mvcc.beginTransaction();
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mvcc.writeVersion('users', '1', { name: 'Alice' }, txn1);
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const txn2 = mvcc.beginTransaction();
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const val = mvcc.readVersion('users', '1', txn2);
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expect(val).toBeNull(); // txn1's write not yet committed
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});
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it('commit 后新事务可见', () => {
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const txn1 = mvcc.beginTransaction();
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mvcc.writeVersion('users', '1', { name: 'Alice' }, txn1);
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mvcc.commitTransaction(txn1);
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const txn2 = mvcc.beginTransaction();
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const val = mvcc.readVersion('users', '1', txn2);
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expect(val).not.toBeNull();
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expect(val!.name).toBe('Alice');
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});
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it('rollback 移除写入的版本', () => {
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const txnId = mvcc.beginTransaction();
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mvcc.writeVersion('users', '1', { name: 'Temp' }, txnId);
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mvcc.rollbackTransaction(txnId);
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const txn2 = mvcc.beginTransaction();
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expect(mvcc.readVersion('users', '1', txn2)).toBeNull();
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});
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it('deleteVersion 创建墓碑', () => {
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const txnId = mvcc.beginTransaction();
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mvcc.writeVersion('users', '1', { name: 'Alice' }, txnId);
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mvcc.commitTransaction(txnId);
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// delete
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const txn2 = mvcc.beginTransaction();
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mvcc.deleteVersion('users', '1', txn2);
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mvcc.commitTransaction(txn2);
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// 删除后读取
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const txn3 = mvcc.beginTransaction();
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const val = mvcc.readVersion('users', '1', txn3);
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expect(val).not.toBeNull();
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expect((val! as any).__mvcc_tombstone).toBe(true);
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});
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it('getLatestCommittedVersions 返回最新已提交', () => {
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const txnId = mvcc.beginTransaction();
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mvcc.writeVersion('users', '1', { name: 'Alice' }, txnId);
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mvcc.writeVersion('users', '2', { name: 'Bob' }, txnId);
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mvcc.commitTransaction(txnId);
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const result = mvcc.getLatestCommittedVersions('users');
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expect(result['1'].name).toBe('Alice');
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expect(result['2'].name).toBe('Bob');
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});
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it('clearTable 清理指定表', () => {
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const txnId = mvcc.beginTransaction();
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mvcc.writeVersion('users', '1', { name: 'A' }, txnId);
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mvcc.writeVersion('users', '2', { name: 'B' }, txnId);
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mvcc.writeVersion('orders', 'o1', { amt: 100 }, txnId);
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mvcc.commitTransaction(txnId);
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mvcc.clearTable('users');
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const txn2 = mvcc.beginTransaction();
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expect(mvcc.readVersion('users', '1', txn2)).toBeNull();
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expect(mvcc.readVersion('users', '2', txn2)).toBeNull();
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expect(mvcc.readVersion('orders', 'o1', txn2)).not.toBeNull();
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});
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it('getActiveTxnCount 返回活跃事务数', () => {
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expect(mvcc.getActiveTxnCount()).toBe(0);
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mvcc.beginTransaction();
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mvcc.beginTransaction();
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expect(mvcc.getActiveTxnCount()).toBe(2);
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});
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it('gc 清理过旧版本', () => {
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// 创建很多版本后 gc
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for (let i = 0; i < 200; i++) {
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const txnId = mvcc.beginTransaction();
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mvcc.writeVersion('users', '1', { ver: i }, txnId);
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mvcc.commitTransaction(txnId);
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}
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mvcc.gc(100);
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// gc 后应可继续操作
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const txnId = mvcc.beginTransaction();
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const val = mvcc.readVersion('users', '1', txnId);
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expect(val).not.toBeNull();
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});
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});
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/**
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* AriaEngine WAL + MVCC 单元测试
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*/
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import { WAL, type WALStore } from '../../src/engine/aria/wal/log';
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import { WALRecordType, type WALRecord } from '../../src/engine/aria/types';
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import { CheckpointManager, type Flushable } from '../../src/engine/aria/wal/checkpoint';
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import { MVCCManager } from '../../src/engine/aria/transaction/mvcc';
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// ===================================================================
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// WAL 存储 Mock
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// ===================================================================
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class MockWALStore implements WALStore {
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chunks: Uint8Array[] = [];
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async append(data: Uint8Array) { this.chunks.push(data); }
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async readAll(): Promise<Uint8Array> {
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const total = this.chunks.reduce((s, c) => s + c.byteLength, 0);
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const combined = new Uint8Array(total);
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let off = 0;
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for (const c of this.chunks) { combined.set(c, off); off += c.byteLength; }
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return combined;
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}
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async truncate() { this.chunks = []; }
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async exists() { return this.chunks.length > 0; }
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}
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// ===================================================================
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// WAL 测试
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// ===================================================================
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describe('AriaEngine — WAL', () => {
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it('append 记录后可恢复', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'full');
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wal.append({ type: WALRecordType.INSERT, txnId: 1, tableName: 'users', key: '1', data: { name: 'Alice' } });
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wal.append({ type: WALRecordType.INSERT, txnId: 1, tableName: 'users', key: '2', data: { name: 'Bob' } });
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const records: WALRecord[] = [];
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await wal.recover((r) => records.push(r));
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expect(records).toHaveLength(2);
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expect(records[0].tableName).toBe('users');
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expect(records[0].key).toBe('1');
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});
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it('batch 模式缓冲后 flush', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'batch');
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wal.append({ type: WALRecordType.UPDATE, txnId: 2, tableName: 'items', key: 'a', data: { v: 1 } });
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wal.append({ type: WALRecordType.DELETE, txnId: 2, tableName: 'items', key: 'b' });
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// 未 flush 前无法恢复
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let records: WALRecord[] = [];
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await wal.recover((r) => records.push(r));
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expect(records).toHaveLength(0);
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await wal.flush();
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records = [];
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await wal.recover((r) => records.push(r));
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expect(records).toHaveLength(2);
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});
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it('none 模式不记录', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, false, 'none');
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wal.append({ type: WALRecordType.INSERT, txnId: 3, tableName: 'x', key: 'y', data: {} });
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expect(store.chunks).toHaveLength(0);
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});
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it('checkpoint 清空 WAL', async () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'full');
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wal.append({ type: WALRecordType.CREATE_TABLE, txnId: 0, tableName: 't', key: '' });
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expect(await store.exists()).toBe(true);
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await wal.checkpoint();
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expect(await store.exists()).toBe(false);
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});
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it('getLSN 跟踪序列号', () => {
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const store = new MockWALStore();
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const wal = new WAL(store, true, 'full');
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expect(wal.getLSN()).toBe(0);
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wal.append({ type: WALRecordType.BEGIN, txnId: 10, tableName: '', key: '' });
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expect(wal.getLSN()).toBe(1);
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wal.append({ type: WALRecordType.COMMIT, txnId: 10, tableName: '', key: '' });
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expect(wal.getLSN()).toBe(2);
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});
|
||||
|
||||
it('isEnabled 反映配置', () => {
|
||||
expect(new WAL(new MockWALStore(), true).isEnabled()).toBe(true);
|
||||
expect(new WAL(new MockWALStore(), false).isEnabled()).toBe(false);
|
||||
});
|
||||
|
||||
it('多种记录类型编解码', async () => {
|
||||
const store = new MockWALStore();
|
||||
const wal = new WAL(store, true, 'full');
|
||||
|
||||
wal.append({ type: WALRecordType.BEGIN, txnId: 100, tableName: '', key: '' });
|
||||
wal.append({ type: WALRecordType.INSERT, txnId: 100, tableName: 'users', key: '1', data: { x: 'hello' } });
|
||||
wal.append({ type: WALRecordType.UPDATE, txnId: 100, tableName: 'users', key: '1', data: { x: 'world' } });
|
||||
wal.append({ type: WALRecordType.COMMIT, txnId: 100, tableName: '', key: '' });
|
||||
|
||||
const records: WALRecord[] = [];
|
||||
await wal.recover((r) => records.push(r));
|
||||
expect(records).toHaveLength(4);
|
||||
expect(records[0].type).toBe(WALRecordType.BEGIN);
|
||||
expect(records[1].type).toBe(WALRecordType.INSERT);
|
||||
expect(records[2].type).toBe(WALRecordType.UPDATE);
|
||||
expect(records[3].type).toBe(WALRecordType.COMMIT);
|
||||
});
|
||||
|
||||
it('getBufferedCount 返回缓冲数', () => {
|
||||
const wal = new WAL(new MockWALStore(), true, 'batch');
|
||||
expect(wal.getBufferedCount()).toBe(0);
|
||||
wal.append({ type: WALRecordType.INSERT, txnId: 0, tableName: 't', key: 'k' });
|
||||
expect(wal.getBufferedCount()).toBe(1);
|
||||
});
|
||||
});
|
||||
|
||||
// ===================================================================
|
||||
// Checkpoint 测试（使用安全 Mock，避免 null 引用导致 CI 卡死）
|
||||
// ===================================================================
|
||||
describe('AriaEngine — CheckpointManager', () => {
|
||||
class MockFlushable implements Flushable { flushed = false; async flushAll() { this.flushed = true; } }
|
||||
class MockLSM { flushed = false; async flush() { this.flushed = true; } }
|
||||
class MockWAL { checkpointed = false; async checkpoint() { this.checkpointed = true; } async flush() {} }
|
||||
|
||||
it('tick 未达间隔不触发 checkpoint', async () => {
|
||||
const lsm = new MockLSM();
|
||||
const wal = new MockWAL();
|
||||
const flushable = new MockFlushable();
|
||||
const cm = new CheckpointManager(lsm as any, wal as any, flushable, 100);
|
||||
await cm.tick();
|
||||
await cm.tick();
|
||||
expect(cm.getOpCount()).toBe(2);
|
||||
expect(flushable.flushed).toBe(false);
|
||||
expect(lsm.flushed).toBe(false);
|
||||
});
|
||||
|
||||
it('setInterval 修改间隔后 tick 触发 checkpoint', async () => {
|
||||
const lsm = new MockLSM();
|
||||
const wal = new MockWAL();
|
||||
const cm = new CheckpointManager(lsm as any, wal as any, null, 1000);
|
||||
cm.setInterval(2);
|
||||
await cm.tick();
|
||||
await cm.tick();
|
||||
expect(cm.getOpCount()).toBe(0); // reset after checkpoint
|
||||
expect(lsm.flushed).toBe(true);
|
||||
expect(wal.checkpointed).toBe(true);
|
||||
});
|
||||
|
||||
it('forceCheckpoint 强制触发', async () => {
|
||||
const lsm = new MockLSM();
|
||||
const wal = new MockWAL();
|
||||
const cm = new CheckpointManager(lsm as any, wal as any, null, 100);
|
||||
await cm.forceCheckpoint();
|
||||
expect(cm.getOpCount()).toBe(0);
|
||||
expect(lsm.flushed).toBe(true);
|
||||
expect(wal.checkpointed).toBe(true);
|
||||
});
|
||||
});
|
||||
|
||||
// ===================================================================
|
||||
// MVCC 测试
|
||||
// ===================================================================
|
||||
describe('AriaEngine — MVCC', () => {
|
||||
let mvcc: MVCCManager;
|
||||
|
||||
beforeEach(() => { mvcc = new MVCCManager(); });
|
||||
|
||||
it('beginTransaction 分配唯一 ID', () => {
|
||||
const id1 = mvcc.beginTransaction();
|
||||
const id2 = mvcc.beginTransaction();
|
||||
expect(id1).not.toBe(id2);
|
||||
expect(mvcc.isActive(id1)).toBe(true);
|
||||
expect(mvcc.isActive(id2)).toBe(true);
|
||||
});
|
||||
|
||||
it('commit 后 isActive 返回 false', () => {
|
||||
const txnId = mvcc.beginTransaction();
|
||||
mvcc.commitTransaction(txnId);
|
||||
expect(mvcc.isActive(txnId)).toBe(false);
|
||||
});
|
||||
|
||||
it('rollback 后 isActive 返回 false', () => {
|
||||
const txnId = mvcc.beginTransaction();
|
||||
mvcc.rollbackTransaction(txnId);
|
||||
expect(mvcc.isActive(txnId)).toBe(false);
|
||||
});
|
||||
|
||||
it('writeVersion + readVersion 往返', () => {
|
||||
const txnId = mvcc.beginTransaction();
|
||||
mvcc.writeVersion('users', '1', { name: 'Alice', age: 30 }, txnId);
|
||||
const val = mvcc.readVersion('users', '1', txnId);
|
||||
expect(val).not.toBeNull();
|
||||
expect(val!.name).toBe('Alice');
|
||||
});
|
||||
|
||||
it('未提交版本对其他事务不可见', () => {
|
||||
const txn1 = mvcc.beginTransaction();
|
||||
mvcc.writeVersion('users', '1', { name: 'Alice' }, txn1);
|
||||
|
||||
const txn2 = mvcc.beginTransaction();
|
||||
const val = mvcc.readVersion('users', '1', txn2);
|
||||
expect(val).toBeNull(); // txn1's write not yet committed
|
||||
});
|
||||
|
||||
it('commit 后新事务可见', () => {
|
||||
const txn1 = mvcc.beginTransaction();
|
||||
mvcc.writeVersion('users', '1', { name: 'Alice' }, txn1);
|
||||
mvcc.commitTransaction(txn1);
|
||||
|
||||
const txn2 = mvcc.beginTransaction();
|
||||
const val = mvcc.readVersion('users', '1', txn2);
|
||||
expect(val).not.toBeNull();
|
||||
expect(val!.name).toBe('Alice');
|
||||
});
|
||||
|
||||
it('rollback 移除写入的版本', () => {
|
||||
const txnId = mvcc.beginTransaction();
|
||||
mvcc.writeVersion('users', '1', { name: 'Temp' }, txnId);
|
||||
mvcc.rollbackTransaction(txnId);
|
||||
|
||||
const txn2 = mvcc.beginTransaction();
|
||||
expect(mvcc.readVersion('users', '1', txn2)).toBeNull();
|
||||
});
|
||||
|
||||
it('deleteVersion 创建墓碑', () => {
|
||||
const txnId = mvcc.beginTransaction();
|
||||
mvcc.writeVersion('users', '1', { name: 'Alice' }, txnId);
|
||||
mvcc.commitTransaction(txnId);
|
||||
// delete
|
||||
const txn2 = mvcc.beginTransaction();
|
||||
mvcc.deleteVersion('users', '1', txn2);
|
||||
mvcc.commitTransaction(txn2);
|
||||
// 删除后读取
|
||||
const txn3 = mvcc.beginTransaction();
|
||||
const val = mvcc.readVersion('users', '1', txn3);
|
||||
expect(val).not.toBeNull();
|
||||
expect((val! as any).__mvcc_tombstone).toBe(true);
|
||||
});
|
||||
|
||||
it('getLatestCommittedVersions 返回最新已提交', () => {
|
||||
const txnId = mvcc.beginTransaction();
|
||||
mvcc.writeVersion('users', '1', { name: 'Alice' }, txnId);
|
||||
mvcc.writeVersion('users', '2', { name: 'Bob' }, txnId);
|
||||
mvcc.commitTransaction(txnId);
|
||||
|
||||
const result = mvcc.getLatestCommittedVersions('users');
|
||||
expect(result['1'].name).toBe('Alice');
|
||||
expect(result['2'].name).toBe('Bob');
|
||||
});
|
||||
|
||||
it('clearTable 清理指定表', () => {
|
||||
const txnId = mvcc.beginTransaction();
|
||||
mvcc.writeVersion('users', '1', { name: 'A' }, txnId);
|
||||
mvcc.writeVersion('users', '2', { name: 'B' }, txnId);
|
||||
mvcc.writeVersion('orders', 'o1', { amt: 100 }, txnId);
|
||||
mvcc.commitTransaction(txnId);
|
||||
|
||||
mvcc.clearTable('users');
|
||||
const txn2 = mvcc.beginTransaction();
|
||||
expect(mvcc.readVersion('users', '1', txn2)).toBeNull();
|
||||
expect(mvcc.readVersion('users', '2', txn2)).toBeNull();
|
||||
expect(mvcc.readVersion('orders', 'o1', txn2)).not.toBeNull();
|
||||
});
|
||||
|
||||
it('getActiveTxnCount 返回活跃事务数', () => {
|
||||
expect(mvcc.getActiveTxnCount()).toBe(0);
|
||||
mvcc.beginTransaction();
|
||||
mvcc.beginTransaction();
|
||||
expect(mvcc.getActiveTxnCount()).toBe(2);
|
||||
});
|
||||
|
||||
it('gc 清理过旧版本', () => {
|
||||
// 创建很多版本后 gc
|
||||
for (let i = 0; i < 200; i++) {
|
||||
const txnId = mvcc.beginTransaction();
|
||||
mvcc.writeVersion('users', '1', { ver: i }, txnId);
|
||||
mvcc.commitTransaction(txnId);
|
||||
}
|
||||
mvcc.gc(100);
|
||||
// gc 后应可继续操作
|
||||
const txnId = mvcc.beginTransaction();
|
||||
const val = mvcc.readVersion('users', '1', txnId);
|
||||
expect(val).not.toBeNull();
|
||||
});
|
||||
});
|
||||
|
||||
Reference in New Issue
Block a user