ReactLazy-test.internal.js — react Source File

Source Code

let React;
let ReactTestRenderer;
let Scheduler;
let Suspense;
let lazy;
let waitFor;
let waitForAll;
let waitForThrow;
let assertLog;
let assertConsoleErrorDev;
let act;

let fakeModuleCache;

function normalizeCodeLocInfo(str) {
  return (
    str &&
    str.replace(/\n +(?:at|in) ([\S]+)[^\n]*/g, function (m, name) {
      return '\n    in ' + name + ' (at **)';
    })
  );
}

describe('ReactLazy', () => {
  beforeEach(() => {
    jest.resetModules();
    React = require('react');
    Suspense = React.Suspense;
    lazy = React.lazy;
    ReactTestRenderer = require('react-test-renderer');
    Scheduler = require('scheduler');

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

    fakeModuleCache = new Map();
  });

  function Text(props) {
    Scheduler.log(props.text);
    return props.text;
  }

  async function fakeImport(Component) {
    const record = fakeModuleCache.get(Component);
    if (record === undefined) {
      const newRecord = {
        status: 'pending',
        value: {default: Component},
        pings: [],
        then(ping) {
          switch (newRecord.status) {
            case 'pending': {
              newRecord.pings.push(ping);
              return;
// ... (1705 more lines)