let fulfil; const thePromise = new Promise(f => { fulfil = f; }); const items = [{ title: 'a title', data: thePromise }]; export default { props: { items }, html: `

a title: loading...

`, test({ assert, component, target }) { fulfil(42); return thePromise .then(() => { assert.htmlEqual(target.innerHTML, `

a title: 42

`); }); } };