export default { async test({ assert, target, window }) { const btn = target.querySelector('button'); const clickEvent = new window.MouseEvent('click'); assert.equal(window.document.head.innerHTML.includes(''), true); await btn.dispatchEvent(clickEvent); assert.equal(window.document.head.innerHTML.includes(''), true); await btn.dispatchEvent(clickEvent); assert.equal(window.document.head.innerHTML.includes(''), true); } };