What is your testing approach when working on fast-pace projects?

import React from 'react';import { ExamplePage } from '../pages';import { screen, waitFor, fireEvent } from '@testing-library/react';import axios from 'axios';import MockAdapter from 'axios-mock-adapter';import mocks from '../mocks/someCollectionEdit.json';import renderPage from './helpers/renderPage';const API_BASE_URL = '/api';jest.mock('../actions/getters/user.ts', () => {  const actions = jest.requireActual('../actions/getters/user.ts');  actions.authenticateUser = jest.fn();  return actions;});jest.mock('../workers/someWorker/someWorker.client.ts');jest.mock('../actions/setters/url.ts');describe('render example page', () => {  let mock;  const mockRequests = () => {    // used by waitFor() in tests    const spies = {      [`${API_BASE_URL}/user`]: jest.fn(),      [`${API_BASE_URL}/organizations`]: jest.fn(),      [`${API_BASE_URL}/some-collection/example-id?someFilter=filter1&organizationId=2`]: jest.fn(),      [`${API_BASE_URL}/some-filters/example-id`]: jest.fn(),      [`${API_BASE_URL}/some-collection/details/example-id`]: jest.fn(),      // ...    };    // mocking calls which may include query strings    ((url) =>      mock.onGet(url).reply((config) => {        process.nextTick(() => spies[config.url]());        return [200, mocks[config.url]];      }))(new RegExp(`${API_BASE_URL}/user$`));    ((url) =>      mock.onGet(url).reply((config) => {        process.nextTick(() => spies[config.url]());        return [200, mocks[config.url]];      }))(new RegExp(`${API_BASE_URL}/organizations$`));    ((url) =>      mock.onGet(url).reply((config) => {        process.nextTick(() => spies[config.url]());        return [200, mocks[config.url]];      }))(      new RegExp(        `${API_BASE_URL}/some-collection/example-id\\?.*`,      ),    );    ((url) =>      mock.onGet(url).reply((config) => {        process.nextTick(() => spies[config.url]());        return [200, mocks[config.url]];      }))(      new RegExp(        `${API_BASE_URL}/some-filters/example-id$`,      ),    );    ((url) =>      mock.onPost(url).reply((config) => {        process.nextTick(() => spies[config.url]());        return [200, mocks[config.url]];      }))(      new RegExp(        `${API_BASE_URL}/some-collection/example-id/data-draft$`,      ),    );    ((url) =>      mock.onPut(url).reply((config) => {        process.nextTick(() => spies[config.url](), 0);        return [200, mocks[config.url]];      }))(      new RegExp(        `${API_BASE_URL}/some-collection/example-id/data$`,      ),    );    // ...    return spies;  };  beforeAll(() => {    mock = new MockAdapter(axios);  });  afterEach(() => {    mock.reset();  });  it('should edit some form with a confirmation modal', async () => {    const spies = mockRequests();    renderPage(ExamplePage, {      route: '/organizations/:organizationId/some-collection/:collectionId/record/edit',      url: '/organizations/2/some-collection/example-id/record/edit',      search: '?someFilter=filter1',    });    await waitFor(() => // page has been rendered with all the necessary data      expect(        spies[          `${API_BASE_URL}/some-collection/example-id?someFilter=filter1&organizationId=2`        ],      ).toHaveBeenCalledTimes(1),    );    const inputField = screen.getByDisplayValue(/example value/i);    const saveChangesButton = screen.getByText(/Save changes/i);    fireEvent.change(inputField, { target: { value: 'updated value' } }); // user action    fireEvent.click(saveChangesButton); // user action    await waitFor(() => // data draft has been sent      expect(        spies[          `${API_BASE_URL}/some-collection/example-id/data-draft`        ],      ).toHaveBeenCalledTimes(1),    );    expect(screen.getByText(/Save some collection changes changes\?/i)).toBeInTheDocument();    expect(screen.getByText(/updated value/i)).toBeInTheDocument();    fireEvent.click(screen.getByText(/Confirm/i)); // user action    await waitFor(() => // data has been submitted      expect(        spies[          `${API_BASE_URL}/some-collection/example-id/data`        ],      ).toHaveBeenCalledTimes(1),    );    expect(      screen.getByText(        /Some collection records has been successfully changed./i,      ),    ).toBeInTheDocument();  });  // ...});