由于您已经模拟了 axios 类，因此模拟axios.get返回值的方法之一就是做到这一点.:

Since you have already mocked the axios class, one of the ways of mocking the return value of axios.get is to do this:

axios.get = jest.fn().mockResolvedValue({
  data: [
    {
      userId: 1,
      id: 1,
      title: 'test'
    }
  ]
});
.
.
expect(axios.get).toHaveBeenCalledTimes(1);

或者，您可以监视axios.get()并提供模拟的返回值:

Alternatively, you can spy on axios.get(), and provide a mocked return value:

jest.spyOn(axios, 'get').mockResolvedValueOnce({
  data: [
    {
      userId: 1,
      id: 1,
      title: 'test'
    }
  ]
});