Ejemplo de package.json que lanza jest

package.json

{
  "name": "practica-final",
  "version": "1.0.0",
  "description": "Plantilla para la practica final del curso de React de TrainingIT",
  "main": "index.js",
  "scripts": {
    "start": "concurrently npm:client npm:server",
    "client": "webpack serve --mode development --config ./client/webpack.config.js",
    "server": "nodemon -w server server/index.js",
    "test": "jest"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/TRAININGIT-REACT-II/Practica-Final.git"
  },
  "author": "Angel M <hola@angel.kiwi>",
  "license": "Apache-2.0",
  "bugs": {
    "url": "https://github.com/TRAININGIT-REACT-II/Practica-Final/issues"
  },
  "homepage": "https://github.com/TRAININGIT-REACT-II/Practica-Final#readme",
  "dependencies": {
    "bcrypt": "^5.1.0",
    "fastify": "^4.13.0",
    "lowdb": "^1.0.0",
    "nanoid": "^3",
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "react-redux": "^8.0.5",
    "react-router-dom": "^5.3.4",
    "redux": "^4.2.1"
  },
  "devDependencies": {
    "@babel/core": "^7.14.0",
    "@babel/preset-env": "^7.14.0",
    "@babel/preset-react": "^7.13.13",
    "@wojtekmaj/enzyme-adapter-react-17": "^0.8.0",
    "babel-jest": "^26.6.3",
    "babel-loader": "^8.2.2",
    "concurrently": "^6.0.2",
    "css-loader": "^5.2.4",
    "enzyme": "^3.11.0",
    "html-webpack-plugin": "^5.3.1",
    "jest": "^29.5.0",
    "nodemon": "^2.0.7",
    "style-loader": "^2.0.0",
    "webpack": "^5.36.2",
    "webpack-cli": "^4.6.0",
    "webpack-dev-server": "^3.11.2"
  }
}