ReactSuspense-test.internal.js — react Source File

Source Code

let React;
let ReactDOMClient;
let ReactDOM;
let Scheduler;
let Suspense;
let act;
let textCache;
let container;

let assertLog;
let waitForPaint;
let waitForAll;
let waitFor;

describe('ReactSuspense', () => {
  beforeEach(() => {
    jest.resetModules();
    React = require('react');
    ReactDOM = require('react-dom');
    ReactDOMClient = require('react-dom/client');
    act = require('internal-test-utils').act;
    Scheduler = require('scheduler');
    container = document.createElement('div');

    Suspense = React.Suspense;

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

    textCache = new Map();
  });

  function resolveText(text) {
    const record = textCache.get(text);
    if (record === undefined) {
      const newRecord = {
        status: 'resolved',
        value: text,
      };
      textCache.set(text, newRecord);
    } else if (record.status === 'pending') {
      const thenable = record.value;
      record.status = 'resolved';
      record.value = text;
      thenable.pings.forEach(t => t());
    }
  }

  function readText(text) {
    const record = textCache.get(text);
    if (record !== undefined) {
      switch (record.status) {
        case 'pending':
          Scheduler.log(`Suspend! [${text}]`);
          throw record.value;
        case 'rejected':
          throw record.value;
// ... (1403 more lines)