如何测试Jest中另一个函数调用的函数的分支？

const obj = {
  funcToBeCalled() {
    // 被调用函数的实现
  },
  anotherFunc() {
    // 调用了funcToBeCalled的函数
    this.funcToBeCalled();
  }
};

test('测试anotherFunc中调用了funcToBeCalled的分支', () => {
  const spy = jest.spyOn(obj, 'funcToBeCalled');
  obj.anotherFunc();
  expect(spy).toHaveBeenCalled();
});