Test Automation
SvelteKit's client-side routing and form enhancements make it an excellent target for Playwright E2E tests. Playwright handles SPA navigation natively, and SvelteKit's progressive enhancement means forms work both with and without JavaScript — making tests more realistic. Setup SvelteKit includes Playwright support out of the box:
Testing
React and Svelte both work with Testing Library, but the details differ enough that patterns learned in React don't always translate directly. This guide covers what changes, what stays the same, and the Svelte-specific patterns you need to know. Setup Both ecosystems use Vitest + Testing Library. React:
Test Automation
Svelte stores are observable values with a simple contract: a subscribe method, and optionally set and update. Because stores are plain JavaScript objects, they're easy to test — subscribe, trigger changes, and assert the emitted values. Setup npm install -D vitest Copy // vite.config.ts import { defineConfig } from '
Test Automation
Integration tests in Svelte sit between unit tests (single components in isolation) and E2E tests (full browser). They render a component tree with real child components, real stores, and mocked external dependencies — verifying that the pieces work together without the overhead of a browser. Setup npm install -D vitest @testing-
Test Automation
Vitest is the natural testing companion for Svelte projects. It shares Vite's transform pipeline, which means Svelte components compile without extra config. Combined with @testing-library/svelte, you get a fast, ergonomic unit testing setup that tests components the way users interact with them. Setup npm create svelte@