ReactSuspenseCallback-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 waitForAll;
let act;
let assertConsoleErrorDev;

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

    React = require('react');
    ReactNoop = require('react-noop-renderer');

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

  function createThenable() {
    let completed = false;
    let resolve;
    const promise = new Promise(res => {
      resolve = () => {
        completed = true;
        res();
      };
    });
    const PromiseComp = () => {
      if (!completed) {
        throw promise;
      }
      return 'Done';
    };
    return {promise, resolve, PromiseComp};
  }

  // Warning don't fire in production, so this test passes in prod even if
  // the suspenseCallback feature is not enabled
  // @gate enableSuspenseCallback || !__DEV__
  it('check type', async () => {
    const {PromiseComp} = createThenable();

    const elementBadType = (
      <React.Suspense suspenseCallback={1} fallback={'Waiting'}>
        <PromiseComp />
      </React.Suspense>
    );

// ... (201 more lines)