@adminjs/express/test/plugin.test.ts

This is an official AdminJS plugin which integrates it with Express.js framework

import { AdminJS } from "adminjs";
import express from "express";
import { jest } from "@jest/globals";

import { buildRouter } from "../src/buildRouter";

jest.useFakeTimers();

describe("plugin", () => {
  describe(".buildRouter", () => {
    it("returns an express router when AdminJS instance given as an argument", () => {
      expect(buildRouter(new AdminJS())).toBeInstanceOf(
        express.Router().constructor
      );
    });
  });
});