test react functional component with hooks by jest failed

When I write the test by jest and start by yarn jest. Tags has value "" in <summary>{tags}</summary>. How emulate value in tags <summary> than equals "v1.0.0"? Sum up, I get this error:

FAIL  src/components/Tags.test.js (10.003 s)
● renders user data 
expect(received).toBe(expected) // Object.is equality

Expected: "v1.0.0"
Received: ""

Module Tags.js is:

import { useParams } from 'react-router-dom';
import React, { useEffect, useState } from 'react';
import { GetTags } from '../api/GetTags';

export default function Tags() {

   
   const [isLoading, setLoading] = useState(true);
   // const [tags, setTags] = useState([]);
   const [tags, setTags] = useState();
    const { user, repo } = useParams();


    useEffect(() => {

        GetTags(user, repo).then(response => {
            //response.map((number`enter code here`) => setTags(oldArray => [...oldArray, number.name]));
            response.map((tag) => setTags(tag));
            setLoading(false);
        });
    }, []);

    return(
        <details>
        <summary>{tags}</summary>
        
      </details>
    )
    

Test file Tags.test.js is:

import React from "react";
import { render, unmountComponentAtNode } from "react-dom";
import { act } from "react-dom/test-utils";
import routeData from "react-router"


import Tags from "./Tags";

let container = null;
const mockParams = {
  user: 'testUser',
  repo: 'testRepo'
}

beforeEach(() => {
  // подготавливаем DOM-элемент, куда будем рендерить
  container = document.createElement("div");
  document.body.appendChild(container);
  jest.spyOn(routeData, 'useParams').mockReturnValue(mockParams)

});

afterEach(() => {
  // подчищаем после завершения
  unmountComponentAtNode(container);
  container.remove();
  container = null;
});

it("renders user data", async () => {
  const fakeTag = "v1.0.0";
  global.fetch = jest.fn().mockImplementation(() =>
    Promise.resolve({
      json: () => Promise.resolve(fakeTag)
    })
  );

  // Используем act асинхронно, чтобы передать успешно завершённые промисы
  await act(async () => {
    render(<Tags />, container);
  });

  expect(container.querySelector("summary").textContent).toBe(fakeTag);

  //expect(container.querySelector("h1").textContent).toBe(fakeTag);
    // выключаем фиктивный fetch, чтобы убедиться, что тесты полностью изолированы
  global.fetch.mockRestore();
  global.fetch.mockClear();
  delete global.fetch;
});