Activity-test.js — react Source File

Source Code

let React;
let ReactNoop;
let Scheduler;
let act;
let LegacyHidden;
let Activity;
let useState;
let useLayoutEffect;
let useEffect;
let useInsertionEffect;
let useMemo;
let startTransition;
let waitForPaint;
let waitFor;
let assertLog;
let assertConsoleErrorDev;
let Suspense;

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

    React = require('react');
    ReactNoop = require('react-noop-renderer');
    Scheduler = require('scheduler');
    act = require('internal-test-utils').act;
    LegacyHidden = React.unstable_LegacyHidden;
    Activity = React.Activity;
    Suspense = React.Suspense;
    useState = React.useState;
    useInsertionEffect = React.useInsertionEffect;
    useLayoutEffect = React.useLayoutEffect;
    useEffect = React.useEffect;
    useMemo = React.useMemo;
    startTransition = React.startTransition;

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

  function Text(props) {
    Scheduler.log(props.text);
    return <span prop={props.text}>{props.children}</span>;
  }

  // @gate enableLegacyHidden
  it('unstable-defer-without-hiding should never toggle the visibility of its children', async () => {
    function App({mode}) {
      return (
        <>
          <Text text="Normal" />
          <LegacyHidden mode={mode}>
            <Text text="Deferred" />
          </LegacyHidden>
        </>
      );
    }
// ... (1574 more lines)