svelte/test/runtime/samples/component-yield-parent/_config.js

export default {
	html: `
		<div><p>Hello</p></div>
	`,

	test ( assert, component, target ) {
		assert.equal( component.get( 'data' ), 'Hello' );

		component.set({ data: 'World' });
		assert.equal( component.get( 'data' ), 'World' );
		assert.htmlEqual( target.innerHTML, `
			<div><p>World</p></div>
		` );
	}
};