我有一个Angular库，我正在努力将其从Angular 11更新到13。Jest在11和12赛季都跑得很好，但现在我在v13上遇到了很多麻烦。我已经按照这里概述的步骤
我得到的错误如下：
Cannot find module '@angular/core/testing' from 'node_modules/jest-preset-angular/setup-jest.js'
Require stack:
node_modules/jest-preset-angular/setup-jest.js
jest.setup.ts
at Resolver.resolveModule (node_modules/jest-resolve/build/index.js:306:11)
at Object.<anonymous> (node_modules/jest-preset-angular/setup-jest.js:2:24)
它在setup-jest文件中寻找有角度的核心文件，这似乎很奇怪。
jest.config.js
module.exports = {
preset: 'jest-preset-angular',
moduleFileExtensions: ['ts', 'html', 'js', 'json', 'mjs'],
snapshotSerializers: [
],
roots: ['src'],
moduleNameMapper: {
'^lodash-es$': '<rootDir>/node_modules/lodash/index.js'
},
setupFilesAfterEnv: ['<rootDir>/jest.setup.ts'],
testMatch: ['<rootDir>/src/**/*.spec.ts'],
transform: {
'^.+\.ts?$': 'ts-jest',
'^.+\.mjs?$': 'ts-jest',
},
transformIgnorePatterns: ['node_modules/(?!(jest-test))', 'node_modules/(?!.*\.mjs$)', 'node_modules/(?!\@angular)'],
coveragePathIgnorePatterns: ['<rootDir>/node_modules/'],
coverageReporters: ['json', 'text', 'html', 'cobertura'],
reporters: ['default', ['jest-junit', { outputDirectory: 'TestResults', outputName: 'jest-junit.xml' }]],
};
jest.setup.ts
import 'zone.js';
import 'zone.js/testing';
import 'jest-preset-angular/setup-jest';
package.json
{
"name": "my-lib-name",
"version": "12.0.2",
"description": "",
"main": "src/main.ts",
"scripts": {
"build": "npm run clean && npm run build:types && npm run build:umd && npm run build:esm2015 && npm run build:app",
"build:app": "tsc --project tsconfig.app.json",
"build:types": "tsc --project tsconfig.app.json --emitDeclarationOnly",
"build:umd": "tsc --project tsconfig.umd.json",
"build:esm2015": "tsc --project tsconfig.esm2015.json",
"clean": "rimraf dist",
"test": "jest --watch-all --detect-open-handles --reporters=default",
"lint": "eslint -c .eslintrc.js --ext .ts ./src",
"ci:test": "jest --ci --no-cache --maxWorkers=4 --detect-open-handles --coverage",
"postbuild": "node scripts/postbuild.js"
},
"author": "",
"license": "ISC",
"peerDependencies": {
"@types/lodash-es": "^4.17.4",
"date-fns": "^2.13.0",
"lodash-es": "^4.17.21",
"rxjs": "^6.5.5"
},
"devDependencies": {
"@angular-devkit/build-angular": "^13.3.9",
"@angular/animations": "^13.3.11",
"@angular/cdk": "^12.2.13",
"@angular/cli": "^13.3.9",
"@angular/common": "^13.3.11",
"@angular/compiler": "^13.3.11",
"@angular/compiler-cli": "^13.3.11",
"@angular/core": "^13.3.11",
"@angular/forms": "^13.3.11",
"@angular/material": "^12.2.13",
"@angular/platform-browser": "^13.3.11",
"@angular/platform-browser-dynamic": "^13.3.11",
"@types/chance": "^1.1.3",
"@types/estree": "^1.0.0",
"@types/jest": "^26.0.22",
"@types/lodash": "^4.14.168",
"@types/lodash-es": "^4.17.4",
"@typescript-eslint/eslint-plugin": "^4.14.2",
"@typescript-eslint/parser": "^4.14.2",
"chance": "^1.1.8",
"date-fns": "^2.13.0",
"eslint": "^7.19.0",
"eslint-plugin-import": "^2.22.1",
"eslint-plugin-jsdoc": "^31.6.0",
"eslint-plugin-prefer-arrow": "^1.2.3",
"jest": "^26.6.3",
"jest-junit": "^12.0.0",
"jest-marbles": "^2.5.1",
"jest-preset-angular": "^12.2.0",
"lodash-es": "^4.17.21",
"rxjs": "6.5.5",
"ts-jest": "^26.5.4",
"ts-loader": "^8.0.17",
"ts-node": "^9.1.1",
"tslib": "^2.4.0",
"typescript": "^4.6.4",
"zone.js": "~0.11.4"
},
"dependencies": {
"ng-packagr": "^12.2.7"
}
}
您似乎使用的是旧版本的Jest(版本26(。Jest预设角度版本12需要Jest版本28。
根据Jest Preset Angular的文档，您在jest.config.js:中缺少此设置
module.exports = {
globalSetup: 'jest-preset-angular/global-setup',
}
请务必查看Jest Preset Angular针对Angular 13的迁移指南。