Testing ​

With JS building blocks it is easy to unit test your components using Vitest and React Testing Library.

To add tests to your own project, start by adding those packages as dev dependencies, as well as @vitejs/plugin-react (for React support)

For Vitest to work properly with your React components add a vitest.config.js in your package root.

import { defineConfig } from 'vitest/config';
import react from '@vitejs/plugin-react';

export default defineConfig({
  plugins: [react()],
});

import { defineConfig } from 'vitest/config';
import react from '@vitejs/plugin-react';

export default defineConfig({
  plugins: [react()],
});

When writing a test file that uses React Testing Library to render components or referencing any browser-specific APIs, add this to the top of the file:

// @vitest-environment jsdom

// @vitest-environment jsdom

This enables React Testing Library’s render function to work.