const foo = ''; const bar = ''; export default { props: { condition: 1, foo, bar }, test({ assert, component, window }) { assert.equal(window.document.head.innerHTML.includes(foo), true); component.condition = false; assert.equal(window.document.head.innerHTML.includes(foo), false); component.condition = 2; assert.equal(window.document.title, 'bar!!!'); assert.equal(window.document.head.innerHTML.includes(bar), true); assert.equal(Boolean(window.document.getElementById('meta')), true); component.condition = false; assert.equal(window.document.head.innerHTML.includes(bar), false); assert.equal(window.document.getElementById('meta'), null); } };