svelte/test/runtime/samples/this-in-function-expressions/_config.js

export default {
	async test({ assert, component, target, window, raf }) {
		const [_, btn] = target.querySelectorAll("button");
		const clickEvent = new window.MouseEvent("click");

		await btn.dispatchEvent(clickEvent);

		assert.equal(btn.x, 1);
	},
};