let fulfil; const thePromise = new Promise(f => { fulfil = f; }); export default { data: { show: true, thePromise }, html: `

loading...

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

the value is 42

`); component.set({ show: false }); assert.htmlEqual(target.innerHTML, `

Else

`); component.set({ show: true }); return thePromise.then(() => { assert.htmlEqual(target.innerHTML, `

the value is 42

`); }); }); } };