118 lines
4.4 KiB
TypeScript
118 lines
4.4 KiB
TypeScript
/**
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* AriaEngine MVCC 事务隔离 + Savepoint 测试
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* 全部 MemoryBackend，零卡死
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*/
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import { AriaEngine } from '../../src/engine/aria/index';
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import { createSchema } from '../../src/table/schema';
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describe('AriaEngine — MVCC 事务 + Savepoint', () => {
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let engine: AriaEngine;
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beforeEach(async () => {
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engine = new AriaEngine({ storageBackend: 'memory' });
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await engine.open('mvcc-test', 1);
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await engine.createTable(createSchema('users', {
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id: { type: 'string', primaryKey: true },
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name: { type: 'string', required: true },
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balance: { type: 'number', default: 0 },
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}));
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});
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afterEach(async () => { await engine.close(); });
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// ---- MVCC 事务 ----
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it('beginTransaction 分配唯一事务ID', () => {
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const id1 = (engine as any).mvcc.beginTransaction();
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const id2 = (engine as any).mvcc.beginTransaction();
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expect(id1).not.toBe(id2);
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});
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it('commit 后事务标记为非活跃', () => {
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const txnId = (engine as any).mvcc.beginTransaction();
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(engine as any).mvcc.commitTransaction(txnId);
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expect((engine as any).mvcc.isActive(txnId)).toBe(false);
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});
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it('rollback 后事务标记为非活跃', () => {
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const txnId = (engine as any).mvcc.beginTransaction();
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(engine as any).mvcc.rollbackTransaction(txnId);
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expect((engine as any).mvcc.isActive(txnId)).toBe(false);
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});
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it('事务中写入版本可读', () => {
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const txnId = (engine as any).mvcc.beginTransaction();
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(engine as any).mvcc.writeVersion('users', '1', { name: 'Alice', balance: 100 }, txnId);
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const val = (engine as any).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 = (engine as any).mvcc.beginTransaction();
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(engine as any).mvcc.writeVersion('users', '1', { name: 'Alice' }, txn1);
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const txn2 = (engine as any).mvcc.beginTransaction();
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expect((engine as any).mvcc.readVersion('users', '1', txn2)).toBeNull();
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});
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it('引擎层事务 commit 后数据可见', async () => {
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await engine.beginTransaction();
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await engine.insert('users', [{ id: '1', name: 'Alice', balance: 100 }]);
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await engine.commitTransaction();
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expect(await engine.count('users')).toBe(1);
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});
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it('引擎层事务 rollback 后数据消失', async () => {
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await engine.insert('users', [{ id: '1', name: 'Alice' }]);
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await engine.beginTransaction();
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await engine.insert('users', [{ id: '2', name: 'Bob' }]);
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await engine.rollbackTransaction();
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expect(await engine.count('users')).toBe(1);
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});
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it('GC 清理过旧版本', () => {
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for (let i = 0; i < 200; i++) {
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const txnId = (engine as any).mvcc.beginTransaction();
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(engine as any).mvcc.writeVersion('users', '1', { ver: i }, txnId);
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(engine as any).mvcc.commitTransaction(txnId);
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}
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(engine as any).mvcc.gc(50);
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const txnId = (engine as any).mvcc.beginTransaction();
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expect((engine as any).mvcc.readVersion('users', '1', txnId)).not.toBeNull();
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(engine as any).mvcc.commitTransaction(txnId);
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});
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// ---- Savepoint ----
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it('savepoint 创建成功', async () => {
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await engine.beginTransaction();
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await (engine as any).savepoint('sp1');
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expect((engine as any).savepoints.has('sp1')).toBe(true);
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await engine.rollbackTransaction();
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});
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it('rollbackToSavepoint 恢复快照', async () => {
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await engine.insert('users', [{ id: '1', name: 'Alice' }]);
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await engine.beginTransaction();
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await engine.insert('users', [{ id: '2', name: 'Bob' }]);
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await (engine as any).savepoint('sp1');
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await engine.insert('users', [{ id: '3', name: 'Charlie' }]);
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await (engine as any).rollbackToSavepoint('sp1');
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await engine.commitTransaction();
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expect(await engine.count('users')).toBe(2);
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});
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it('releaseSavepoint 释放后不可回滚', async () => {
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await engine.beginTransaction();
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await (engine as any).savepoint('sp1');
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await (engine as any).releaseSavepoint('sp1');
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expect((engine as any).savepoints.has('sp1')).toBe(false);
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await engine.rollbackTransaction();
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});
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it('重复 savepoint 名称抛出错误', async () => {
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await engine.beginTransaction();
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await (engine as any).savepoint('sp1');
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await expect((engine as any).savepoint('sp1')).rejects.toThrow('already exists');
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await engine.rollbackTransaction();
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});
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});
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