ReactActWarnings-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
 */

let React;
let Scheduler;
let waitForAll;
let assertLog;
let ReactNoop;
let useState;
let act;
let Suspense;
let startTransition;
let getCacheForType;
let caches;
let assertConsoleErrorDev;

// These tests are mostly concerned with concurrent roots. The legacy root
// behavior is covered by other older test suites and is unchanged from
// React 17.
describe('act warnings', () => {
  beforeEach(() => {
    jest.resetModules();
    React = require('react');
    Scheduler = require('scheduler');
    ReactNoop = require('react-noop-renderer');
    act = React.act;
    useState = React.useState;
    Suspense = React.Suspense;
    startTransition = React.startTransition;
    getCacheForType = React.unstable_getCacheForType;
    caches = [];

    const InternalTestUtils = require('internal-test-utils');
    waitForAll = InternalTestUtils.waitForAll;
    assertLog = InternalTestUtils.assertLog;
    assertConsoleErrorDev = InternalTestUtils.assertConsoleErrorDev;
  });

  function createTextCache() {
    const data = new Map();
    const version = caches.length + 1;
    const cache = {
      version,
      data,
      resolve(text) {
        const record = data.get(text);
        if (record === undefined) {
          const newRecord = {
            status: 'resolved',
            value: text,
          };
          data.set(text, newRecord);
        } else if (record.status === 'pending') {
          const thenable = record.value;
// ... (385 more lines)