text: import React from "react";
  import ReactDOM from "react-dom";
  import { MemoryRouter } from "react-router-dom";
  import DefaultHeader from "../DefaultHeader";
  
  it("renders without crashing", () => {
    const div = document.createElement("div");
    ReactDOM.render(
      <MemoryRouter>
        <DefaultHeader />
      </MemoryRouter>,
      div
    );
    ReactDOM.unmountComponentAtNode(div);
  });
  