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I haven't tried this combination in my projects, but you can check the example from the Vitest GitHub repo: Use Playwright with Vitest as test runner
In this article, I'll focus on the basic setup of Vitest & Playwright to test our Svelte components. You can check the demo repo here: Svelte Component Test Demo Repo
Vitest: A Vite-native unit test framework. (alternative: Jest, uvu)
You can follow the below steps to setup Vitest or use the Svelte Adder: svelte-add-vitest
sveltejs/kit: Vitest for unit testing #5285
Playwright: A framework for Web Testing and Automation. (alternative: Cypress)
Vitest: A Vite-native unit test framework. (alternative: Jest, uvu)