[Support] 按照文档编写测试，启动不起来，提示 Handshake inactivity timeout

[cai-zhuo]

Describe the problem（描述问题）

按照文档 https://midway.alibaba-inc.com/docs/testing/ ，编写测试代码，createApp 一直报错，求帮助~

报错代码为：
const app = await createApp<Framework>();

报错信息为
Error: Handshake inactivity timeout
at Handshake. (/Users/caizhuo/Workspace/luminai/node_modules/mysql/lib/protocol/Protocol.js:160:17)
at Handshake.emit (node:events:513:28)
at Handshake.emit (node:domain:489:12)
at Handshake._onTimeout (/Users/caizhuo/Workspace/luminai/node_modules/mysql/lib/protocol/sequences/Sequence.js:124:8)
at Timer._onTimeout (/Users/caizhuo/Workspace/luminai/node_modules/mysql/lib/protocol/Timer.js:32:23)
at listOnTimeout (node:internal/timers:559:17)
at processTimers (node:internal/timers:502:7)
--------------------
at Protocol.Object..Protocol._enqueue (/Users/caizhuo/Workspace/luminai/node_modules/mysql/lib/protocol/Protocol.js:144:48)
at Protocol.handshake (/Users/caizhuo/Workspace/luminai/node_modules/mysql/lib/protocol/Protocol.js:51:23)
at PoolConnection.connect (/Users/caizhuo/Workspace/luminai/node_modules/mysql/lib/Connection.js:116:18)
at Pool.Object..Pool.getConnection (/Users/caizhuo/Workspace/luminai/node_modules/mysql/lib/Pool.js:48:16)
at /Users/caizhuo/Workspace/luminai/node_modules/typeorm/src/driver/mysql/MysqlDriver.ts:1265:18
at new Promise ()
at MysqlDriver.createPool (/Users/caizhuo/Workspace/luminai/node_modules/typeorm/src/driver/mysql/MysqlDriver.ts:1262:16)
at MysqlDriver.connect (/Users/caizhuo/Workspace/luminai/node_modules/typeorm/src/driver/mysql/MysqlDriver.ts:400:36)
at DataSource.initialize (/Users/caizhuo/Workspace/luminai/node_modules/src/data-source/DataSource.ts:254:27)
at TypeORMDataSourceManager.createDataSource (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/typeorm/dist/dataSourceManager.js:38:26)
at TypeORMDataSourceManager.createInstance (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/common/dataSourceManager.js:115:35)
at TypeORMDataSourceManager.initDataSource (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/common/dataSourceManager.js:77:24)
at TypeORMDataSourceManager.init (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/typeorm/dist/dataSourceManager.js:18:20)
at ObjectCreator.doInitAsync (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/definitions/objectCreator.js:111:30)
at ManagedResolverFactory.createAsync (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/context/managedResolverFactory.js:258:34)
at async OrmConfiguration.onReady (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/typeorm/dist/configuration.js:47:34)
at async MidwayLifeCycleService.runContainerLifeCycle (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/service/lifeCycleService.js:105:36)
at async MidwayLifeCycleService.init (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/service/lifeCycleService.js:65:9)
at async ObjectCreator.doInitAsync (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/definitions/objectCreator.js:111:17)
at async ManagedResolverFactory.createAsync (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/context/managedResolverFactory.js:258:9)
at async initializeGlobalApplicationContext (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/core/dist/setup.js:50:5)
at async create (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/mock/dist/creator.js:144:9)
at async createApp (/Users/caizhuo/Workspace/luminai/node_modules/@midwayjs/mock/dist/creator.js:180:23)
at async Object. (/Users/caizhuo/Workspace/luminai/test/service/composition/no-result.test.ts:10:21) {
code: 'PROTOCOL_SEQUENCE_TIMEOUT',
fatal: true,
timeout: 10000
}

Midway Versions（Midway 版本）

"@ali/midway": "^8.3.0",
"@midwayjs/mock": "^3.20.11",

[czy88840616]

这个是数据库连不上吧，看看测试环境下的连接配置？