#testEnvironment

• Type: 'node' | 'jsdom'
• Default: 'node'

The environment that will be used for testing.

The default environment in Rstest is a Node.js environment. If you are building a web application, you can use a browser-like environment through jsdom instead.

import { defineConfig } from '@rstest/core';

export default defineConfig({
  testEnvironment: 'jsdom',
});

#Dom testing

Rstest supports jsdom for mocking DOM and browser APIs.

If you want to enable DOM testing, you can use the following configuration:

import { defineConfig } from '@rstest/core';

export default defineConfig({
  testEnvironment: 'jsdom',
});

You also need to install jsdom:

npm install jsdom -D

After enabling DOM testing, you can write tests that use browser APIs like document and window.

test('dom test', () => {
  document.body.innerHTML = '<p class="content">hello world</p>';
  const paragraph = document.querySelector('.content');
  expect(paragraph?.innerHTML).toBe('hello world');
});