Migrate test/persistent-cache/* test files to Vitest

Author: Kocal

package.json

@@ -4,9 +4,8 @@
   "description": "Webpack Encore is a simpler way to integrate Webpack into your application",
   "main": "index.js",
   "scripts": {
-    "test": "yarn run vitest && yarn run test:main && yarn run test:persistent-cache",
+    "test": "yarn run vitest && yarn run test:main",
     "test:main": "mocha --reporter spec test --recursive --ignore test/persistent-cache/*",
-    "test:persistent-cache": "node run-persistent-tests",
     "test:vitest": "vitest",
     "lint": "eslint lib test index.js .eslintrc.js --report-unused-disable-directives --max-warnings=0",
     "travis:lint": "yarn run lint"

run-persistent-tests.js

@@ -9,7 +9,7 @@
 
 'use strict';
 
-const chai = require('chai');
+import { describe, it, expect, chai } from 'vitest';
 chai.use(require('chai-fs'));
 chai.use(require('chai-subset'));
 const path = require('path');
@@ -33,10 +33,7 @@ function createWebpackConfig(outputDirName = '', testName, command, argv = {}) {
     return webpackConfig;
 }
 
-describe('Functional persistent cache tests using webpack', function() {
-    // being functional tests, these can take quite long
-    this.timeout(10000);
-
+describe('Functional persistent cache tests using webpack', { repeats: 2, timeout: 10000 }, function() {
     describe('Basic scenarios.', () => {
         it('Persistent caching does not cause problems', (done) => {
             const config = createWebpackConfig('www/build', 'basic_cache', 'dev');