Function triggerLayout

src/components/__tests__/ProgressBar.test.tsx:24–30

(
  tree: ReturnType<typeof render>
)

const a11yRole = 'progressbar';
const triggerLayout = async (
  tree: ReturnType<typeof render>
): Promise<void> => {
  await act(async () => {
    tree.getByRole(a11yRole).props.onLayout(layoutEvent);
  });
};

class ClassProgressBar extends React.Component<Props> {
  render() {