For this blog post: https://medium.com/@robdel12/jest-bigtest-interactor-component-test-%EF%B8%8F-11b1947954c8

first-jest-example.js

//...typical imports
import { mount } from '@bigtest/react';
import CheckboxInteractor from './interactor';

describe("Checkbox", () => {
  let checkbox = new CheckboxInteractor("label");
  
  it("calls onFocus() when focus is set", async () => {
    let handleFocus = jest.fn();
    
    await mount(() => <Checkbox onFocus={handleFocus} />);
    await checkbox.focusCheckbox();
    
    expect(handleFocus).toBeCalled();
    expect(checkbox.hasFocus).toBe(true);
  });
});