ReactIncrementalErrorLogging-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 waitForAll;
let uncaughtExceptionMock;

async function fakeAct(cb) {
  // We don't use act/waitForThrow here because we want to observe how errors are reported for real.
  await cb();
  Scheduler.unstable_flushAll();
}

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

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

  // Note: in this test file we won't be using assertConsoleDev() matchers
  // because they filter out precisely the messages we want to test for.
  let oldConsoleWarn;
  let oldConsoleError;
  beforeEach(() => {
    oldConsoleWarn = console.warn;
    oldConsoleError = console.error;
    console.warn = jest.fn();
    console.error = jest.fn();
    uncaughtExceptionMock = jest.fn();
    process.on('uncaughtException', uncaughtExceptionMock);
  });

  afterEach(() => {
    console.warn = oldConsoleWarn;
    console.error = oldConsoleError;
    process.off('uncaughtException', uncaughtExceptionMock);
    oldConsoleWarn = null;
    oldConsoleError = null;
    uncaughtExceptionMock = null;
  });

  it('should log errors that occur during the begin phase', async () => {
    class ErrorThrowingComponent extends React.Component {
      constructor(props) {
// ... (229 more lines)