react-testing-library-article-1

sum.test.tsx

import React from "react";
import { render, cleanup, fireEvent } from "@testing-library/react";
import Sum from "./Sum";

describe("Sum", () => {
  afterEach(cleanup) 
  
  it("should render", () => {
    const SumComponent = render(<Sum />);
    expect(SumComponent).toBeTruthy();
  });
});