excalidraw/src/setupTests.ts

import "@testing-library/jest-dom";
import "jest-canvas-mock";

import dotenv from "dotenv";

// jest doesn't know of .env.development so we need to init it ourselves
dotenv.config({
  path: require("path").resolve(__dirname, "../.env.development"),
});

jest.mock("nanoid", () => {
  return {
    nanoid: jest.fn(() => "test-id"),
  };
});
// ReactDOM is located inside index.tsx file
// as a result, we need a place for it to render into
const element = document.createElement("div");
element.id = "root";
document.body.appendChild(element);