ReactExpiration-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.
 *
 * @jest-environment node
 */

'use strict';

let React;
let ReactNoop;
let Scheduler;
let act;
let readText;
let resolveText;
let startTransition;
let useState;
let useEffect;
let assertLog;
let waitFor;
let waitForAll;
let unstable_waitForExpired;

describe('ReactExpiration', () => {
  beforeEach(() => {
    jest.resetModules();

    React = require('react');
    ReactNoop = require('react-noop-renderer');
    Scheduler = require('scheduler');
    act = require('internal-test-utils').act;
    startTransition = React.startTransition;
    useState = React.useState;
    useEffect = React.useEffect;

    const InternalTestUtils = require('internal-test-utils');
    assertLog = InternalTestUtils.assertLog;
    waitFor = InternalTestUtils.waitFor;
    waitForAll = InternalTestUtils.waitForAll;
    unstable_waitForExpired = InternalTestUtils.unstable_waitForExpired;

    const textCache = new Map();

    readText = text => {
      const record = textCache.get(text);
      if (record !== undefined) {
        switch (record.status) {
          case 'pending':
            throw record.promise;
          case 'rejected':
            throw Error('Failed to load: ' + text);
          case 'resolved':
            return text;
        }
      } else {
        let ping;
        const promise = new Promise(resolve => (ping = resolve));
        const newRecord = {
// ... (712 more lines)