ReactIncremental-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 ReactNoop;
let Scheduler;
let PropTypes;

let assertConsoleErrorDev;
let waitForAll;
let waitFor;
let waitForThrow;
let assertLog;

describe('ReactIncremental', () => {
  beforeEach(() => {
    jest.resetModules();
    React = require('react');
    ReactNoop = require('react-noop-renderer');
    Scheduler = require('scheduler');
    PropTypes = require('prop-types');

    ({
      assertConsoleErrorDev,
      waitForAll,
      waitFor,
      waitForThrow,
      assertLog,
    } = require('internal-test-utils'));
  });

  // Note: This is based on a similar component we use in www. We can delete
  // once the extra div wrapper is no longer necessary.
  function LegacyHiddenDiv({children, mode}) {
    return (
      <div hidden={mode === 'hidden'}>
        <React.unstable_LegacyHidden
          mode={mode === 'hidden' ? 'unstable-defer-without-hiding' : mode}>
          {children}
        </React.unstable_LegacyHidden>
      </div>
    );
  }

  it('should render a simple component', async () => {
    function Bar() {
      return <div>Hello World</div>;
    }

    function Foo() {
      return <Bar isBar={true} />;
// ... (2833 more lines)