Function renderIntoContainer

frontend/src/react/components/ExprEditor.test.tsx:126–143

(element: ReactElement)

]);

const renderIntoContainer = (element: ReactElement) => {
  const container = document.createElement("div");
  document.body.appendChild(container);
  const root = createRoot(container);

  act(() => {
    root.render(element);
  });

  return {
    container,
    unmount: () =>
      act(() => {
        root.unmount();
        container.remove();
      }),
  };
};

const flushEffects = async () => {
  await act(async () => {