Setting up testing file useFetch.test.js

useFetch.test.js

import { renderHook } from "@testing-library/react-hooks";
import { useFetch } from "./customHooks";

const stubbedCountries = [
  { name: "Slovakia", capital: "Bratislava" },
  { name: "Germany", capital: "Berlin" },
];
const stubbedFetchUrl = "api/countriesUrl-mocked";

afterEach(() => {
  global.fetch.mockClear();
});

afterAll(() => {
  global.fetch.mockRestore();
});

describe("useFetch", () => {
  // writing tests here
])