useMemoCache-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
 */

let React;
let ReactNoop;
let Scheduler;
let act;
let assertLog;
let useMemo;
let useState;
let useMemoCache;
let MemoCacheSentinel;
let ErrorBoundary;

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

    React = require('react');
    ReactNoop = require('react-noop-renderer');
    Scheduler = require('scheduler');
    act = require('internal-test-utils').act;
    assertLog = require('internal-test-utils').assertLog;
    useMemo = React.useMemo;
    useMemoCache = require('react/compiler-runtime').c;
    useState = React.useState;
    MemoCacheSentinel = Symbol.for('react.memo_cache_sentinel');

    class _ErrorBoundary extends React.Component {
      constructor(props) {
        super(props);
        this.state = {hasError: false};
      }

      static getDerivedStateFromError(error) {
        // Update state so the next render will show the fallback UI.
        return {hasError: true};
      }

      componentDidCatch(error, errorInfo) {}

      render() {
        if (this.state.hasError) {
          // You can render any custom fallback UI
          return <h1>Something went wrong.</h1>;
        }

        return this.props.children;
      }
    }
    ErrorBoundary = _ErrorBoundary;
  });

// ... (613 more lines)