fix: support simple test on normal app (#179)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
	- Added "PRs Welcome" badge to README files.
	- Added Node.js version badge to Chinese README.
	- Introduced a simple GET route in the new "helloworld" application.
	- Established basic configuration for the "helloworld" application.
	- Created a new `package.json` for the "helloworld" application.
- Added a test suite for validating the bootstrap functionality of the
"helloworld" application.

- **Documentation**
	- Updated README files with project badges.

- **Chores**
	- Modified test configurations for ESM support.
	- Updated import paths in type definition files.
	- Created a new test fixture application "helloworld".

- **Refactor**
	- Removed `src/index.d.ts` type definitions.
	- Updated `src/bootstrap.ts` to export app instance.
	- Modified `src/lib/app_handler.ts` to ensure app return.
- Refactored test cases in `test/app.test.ts` for improved readability
and maintainability.
	- Updated test suite in `test/app_proxy.test.ts` to run all tests.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.github/workflows/nodejs.yml

@@ -12,6 +12,6 @@ jobs:
     uses: node-modules/github-actions/.github/workflows/node-test.yml@master
     with:
       os: 'ubuntu-latest, macos-latest'
-      version: '18.19.0, 18, 20, 22, 23'
+      version: '18.19.0, 18, 20, 22'
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

README.md

@@ -5,6 +5,7 @@
 [![Test coverage][codecov-image]][codecov-url]
 [![npm download][download-image]][download-url]
 [![Node.js Version](https://img.shields.io/node/v/@eggjs/mock.svg?style=flat)](https://nodejs.org/en/download/)
+[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](https://makeapullrequest.com)
 
 [npm-image]: https://img.shields.io/npm/v/@eggjs/mock.svg?style=flat-square
 [npm-url]: https://npmjs.org/package/@eggjs/mock

README.zh_CN.md

@@ -4,6 +4,8 @@
 [![Node.js CI](https://github.com/eggjs/mock/actions/workflows/nodejs.yml/badge.svg)](https://github.com/eggjs/mock/actions/workflows/nodejs.yml)
 [![Test coverage][codecov-image]][codecov-url]
 [![npm download][download-image]][download-url]
+[![Node.js Version](https://img.shields.io/node/v/@eggjs/mock.svg?style=flat)](https://nodejs.org/en/download/)
+[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](https://makeapullrequest.com)
 
 [npm-image]: https://img.shields.io/npm/v/@eggjs/mock.svg?style=flat-square
 [npm-url]: https://npmjs.org/package/@eggjs/mock

package.json

@@ -59,7 +59,6 @@
     "@types/mocha": "10",
     "@types/node": "22",
     "egg": "beta",
-    "egg-bin": "beta",
     "egg-errors": "^2.2.1",
     "egg-tracer": "^2.0.0",
     "eslint": "8",

src/bootstrap.ts

@@ -13,11 +13,12 @@ if (pkgInfo.eggPlugin) {
   throw new Error('DO NOT USE bootstrap to test plugin');
 }
 
-setupApp();
+const app = setupApp();
 
 export {
   assert,
   getBootstrapApp,
+  app,
   mm,
   mock,
   MockApplication,

src/lib/app_handler.ts

@@ -46,6 +46,7 @@ export function setupApp() {
       afterEach(restore);
     }
   }
+  return app;
 }
 
 let getAppCallback: (suite: unknown, test?: unknown) => any;

test/app.test.ts

@@ -1,7 +1,6 @@
 import { strict as assert } from 'node:assert';
 import mm, { MockApplication } from '../src/index.js';
 import { getFixtures } from './helper.js';
-import { pending } from 'pedding';
 
 describe('test/app.test.ts', () => {
   afterEach(mm.restore);
@@ -91,15 +90,11 @@ describe('test/app.test.ts', () => {
     assert((app.options as any).test === 'abc');
   });
 
-  it('should emit error when load Application fail', done => {
-    done = pending(2, done);
+  it('should emit error when load Application fail', async () => {
     const baseDir = getFixtures('app-fail');
     const app = mm.app({ baseDir, cache: false });
-    app.once('error', (err: any) => {
-      app.close().then(() => done);
-      assert(/load error/.test(err.message));
-      done();
-    });
+    await assert.rejects(app.ready(), /load error/);
+    await app.close();
   });
 
   it('should FrameworkErrorformater work during app boot', async () => {

test/app_proxy.test.ts

@@ -298,7 +298,7 @@ describe('test/app_proxy.test.ts', () => {
     });
   });
 
-  describe.only('messenger binding on cluster() mode', () => {
+  describe('messenger binding on cluster() mode', () => {
     let app: MockApplication;
     const baseDir = getFixtures('messenger-binding');
     before(() => {