svelte/test/runtime/samples/class-helper/_config.js

export default {
	get props() {
		return { user: { active: true } };
	},

	html: '<div class="active"></div>',

	test({ assert, component, target }) {
		component.user = { active: false };

		assert.htmlEqual(
			target.innerHTML,
			`
			<div class></div>
		`
		);
	}
};