let fulfil; let thePromise = new Promise(f => { fulfil = f; }); export default { props: { thePromise }, html: ``, test({ assert, component, target }) { fulfil(42); return thePromise .then(() => { assert.htmlEqual(target.innerHTML, `
the value is 42
`); let reject; thePromise = new Promise((f, r) => { reject = r; }); component.thePromise = thePromise; assert.htmlEqual(target.innerHTML, ``); reject(new Error('something broke')); return thePromise.catch(() => {}); }) .then(() => { assert.htmlEqual(target.innerHTML, `oh no! something broke
`); }); } };