svelte/test/runtime/samples/instrumentation-script-update/_config.js

export default {
	html: `
		<button>foo</button>
		<p>x: 0</p>
	`,

	async test({ assert, component, target, window }) {
		const buttons = target.querySelectorAll('button');
		const click = new window.MouseEvent('click');

		await buttons[0].dispatchEvent(click);
		assert.htmlEqual(target.innerHTML, `
			<button>foo</button>
			<p>x: 1</p>
		`);
	}
};