ReactServerRendering-test.js — react Source File

Source Code

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @emails react-core
 * @jest-environment node
 */

'use strict';

let React;
let ReactDOMServer;
let PropTypes;
let ReactSharedInternals;
let assertConsoleErrorDev;

describe('ReactDOMServer', () => {
  beforeEach(() => {
    jest.resetModules();
    React = require('react');
    PropTypes = require('prop-types');
    ReactDOMServer = require('react-dom/server');
    assertConsoleErrorDev =
      require('internal-test-utils').assertConsoleErrorDev;
    ReactSharedInternals =
      React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE;
  });

  describe('renderToString', () => {
    it('should generate simple markup', () => {
      const response = ReactDOMServer.renderToString(<span>hello world</span>);
      expect(response).toMatch(new RegExp('<span' + '>hello world</span>'));
    });

    it('should generate simple markup for self-closing tags', () => {
      const response = ReactDOMServer.renderToString(<img />);
      expect(response).toMatch(new RegExp('<img' + '/>'));
    });

    it('should generate comment markup for component returns null', () => {
      class NullComponent extends React.Component {
        render() {
          return null;
        }
      }

      const response = ReactDOMServer.renderToString(<NullComponent />);
      expect(response).toBe('');
    });

    // TODO: Test that listeners are not registered onto any document/container.

    it('should render composite components', () => {
      class Parent extends React.Component {
        render() {
          return (
            <div>
              <Child name="child" />
// ... (1015 more lines)