import React from "react"; import { app } from "@/test/elements"; import { renderApp } from "@/test/renderApp"; import { StylingCss } from "./StylingCss"; const today = new Date(2021, 10, 25); beforeAll(() => jest.setSystemTime(today)); afterAll(() => jest.useRealTimers()); beforeEach(() => { renderApp(); }); test("the caption should use the custom class name", () => { expect(app().getElementsByClassName("caption_aqua")[0]).toHaveTextContent( "November 2021" ); });