Function CounterButton

test-utils/test/shared/act.test.jsx:158–162

()

	it('should flush state updates if there are pending state updates before `act` call', () => {
		function CounterButton() {
			const [count, setCount] = useState(0);
			const increment = () => setCount(count => count + 1);
			return <button onClick={increment}>{count}</button>;
		}

		render(<CounterButton />, scratch);
		const button = scratch.querySelector('button');