SvelteKit

Testing

SvelteKit Testing Guide: Unit, Integration & E2E (2026)

SvelteKit ships without a testing setup. You create a project with npm create svelte@latest, pick a template, and get a working app — but zero tests.

Testing

SvelteKit E2E Testing with Playwright (2026)

Playwright is the E2E test runner of choice for SvelteKit. It drives a real browser — Chromium, Firefox, or WebKit — against your running app.

Testing

Testing SvelteKit API Routes and Server Load Functions (2026)

SvelteKit API routes (+server.ts) and server load functions (+page.server.ts) contain your application's backend logic.

Testing

Testing SvelteKit Form Actions and Superforms (2026)

SvelteKit form actions handle POST requests from elements on the server.

Testing

Testing Svelte Stores: Writable, Readable and Derived (2026)

Svelte stores hold application state. When store logic is wrong — a derived value computes incorrectly, a custom store doesn't clean up subscriptions, an async store gets stuck in a loading state — components using that store will fail in ways that are hard to trace. Testing stores in isolation

Testing

Svelte Component Testing with Vitest and Testing Library (2026)

Svelte components have logic in them. Props control rendering, user interactions trigger state changes, events propagate to parent components.

Test Automation

SvelteKit Testing: Vitest, Testing Library & Playwright (2026)

SvelteKit gives you fast builds and a clean full-stack model. It also ships with no testing setup at all.