import { es } from "date-fns/locale/es"; import { dateLib } from "../lib"; import { formatCaption } from "./formatCaption"; const date = new Date(2022, 10, 21); test("should return the formatted caption", () => { expect(formatCaption(date, {}, dateLib)).toEqual("November 2022"); }); describe("when a locale is passed in", () => { test("should format using the locale", () => { expect(formatCaption(date, { locale: es }, dateLib)).toEqual( "noviembre 2022" ); }); });