Expecting error with axios-mock-adapter only works inside a try-catch block or when only one test is run

Question

I'm mocking an axios instance using axios-mock-adapter for unit testing a service that connects to an API.

api.ts

export const api = axios.create({
  baseURL: `${process.env.PUBLIC_URL}/api`,
});

answers.service.test.ts

import { api } from "../services/api";
import MockAdapter from "axios-mock-adapter";

describe("AnswersService", () => {
  let mockAxios = new MockAdapter(api);

  afterEach(() => {
    mockAxios.reset();
  });

Testing using practices recommended in the Jest documentation result in strange behaviour and failing tests.

There is something strange afoot:

• If I setup my test like this, it runs without trouble. However, if I remove the extra validations it shows that the api instance has not been called even once. Moreover, the test also fails if I run it with others, showing that Received promise resolved instead of rejected.

it("Should throw error when creating answer with invalid question ID", async () => {
    const answer = "answer";
    const idQuestion = -1;
    let spy = jest.spyOn(api, "post");

    mockAxios.onPost(`/answers/${idQuestion}`).reply(404);

    await expect(createAnswer(answer, idQuestion)).rejects.toThrow(NotFoundError);

    // expect(spy).toHaveBeenCalledWith(`/answers/${idQuestion}`, {
    //   body: answer,
    // });
    //expect(spy).toHaveBeenCalledTimes(1);
  });

• If I modify the test so it uses a try-catch block, the test actually runs without issues but I get the warning that I shouldn't be calling expect conditionally.

it("Should throw error when creating answer with invalid question ID", async () => {
    const answer = "answer";
    const idQuestion = -1;

    mockAxios.onPost(`/answers/${idQuestion}`).reply(404);

    try {
      await createAnswer(answer, idQuestion);
    }
    catch (e) {
      expect(e).toBeInstanceOf(NotFoundError);
    }

    expect(jest.spyOn(api, "post")).toHaveBeenCalledWith(`/answers/${idQuestion}`, {
      body: answer,
    });
    expect(jest.spyOn(api, "post")).toHaveBeenCalledTimes(1);
  });

What could be going on? I don't understand what's going on. The first option seems to be the better one, but it just won't work.