ReactCache-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 ReactNoopFlightServer;
let ReactNoopFlightClient;
let cache;
let cacheSignal;

describe('ReactCache', () => {
  beforeEach(() => {
    jest.resetModules();
    jest.mock('react', () => require('react/react.react-server'));
    React = require('react');

    ReactNoopFlightServer = require('react-noop-renderer/flight-server');
    ReactNoopFlightClient = require('react-noop-renderer/flight-client');

    cache = React.cache;
    cacheSignal = React.cacheSignal;

    jest.resetModules();
    __unmockReact();
  });

  it('cache objects and primitive arguments and a mix of them', async () => {
    const types = cache((a, b) => ({a: typeof a, b: typeof b}));
    function Print({a, b}) {
      return types(a, b).a + ' ' + types(a, b).b + ' ';
    }
    function Same({a, b}) {
      const x = types(a, b);
      const y = types(a, b);
      return (x === y).toString() + ' ';
    }
    function FlippedOrder({a, b}) {
      return (types(a, b) === types(b, a)).toString() + ' ';
    }
    function FewerArgs({a, b}) {
      return (types(a, b) === types(a)).toString() + ' ';
    }
    function MoreArgs({a, b}) {
      return (types(a) === types(a, b)).toString() + ' ';
    }

    expect(
      (
        await ReactNoopFlightClient.read(
          ReactNoopFlightServer.render(
            <>
              <Print a="e" b="f" />
// ... (248 more lines)