What is the default test framework for ReactJS?

By using Create-React-App to scaffolding a new project, it will include default App.test.js with below content:

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';

it('renders without crashing', () => {
  const div = document.createElement('div');
  ReactDOM.render(<App />, div);

  //expect(div.innerHTML).toContain('Hi There!');

  ReactDOM.unmountComponentAtNode(div);
});

I've tried to run command yarn test, below is the response i got

Error: Cannot find module '/Users/isaaclem/Code/ReactJS/testing/node_modules/jest-cli'

And if I try npm run test instead, I'm hitting same error too, which saying couldnt find jest-cli. Is there any reason where C-R-A gives us a default test file but not including the necessary framework/module?

Below is the default package.json:

{
  "name": "testing",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "react": "^16.4.1",
    "react-dom": "^16.4.1",
    "react-router-dom": "^4.3.1",
    "react-scripts": "1.1.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  }
}