let count = 0; export default { props: { foo: 'potato', fn: () => { count += 1; return true; } }, html: '

potato

', before_test() { count = 0; }, test({ assert, component, target }) { assert.equal(count, 1); component.foo = 'soup'; assert.equal(count, 1); assert.htmlEqual(target.innerHTML, '

soup

'); } };