ReactHooks-test.internal.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
 */

/* eslint-disable no-func-assign */

'use strict';

let React;
let ReactTestRenderer;
let Scheduler;
let ReactDOMServer;
let act;
let assertLog;
let assertConsoleErrorDev;
let waitForAll;
let waitForThrow;

describe('ReactHooks', () => {
  beforeEach(() => {
    jest.resetModules();
    React = require('react');
    ReactTestRenderer = require('react-test-renderer');
    Scheduler = require('scheduler');
    ReactDOMServer = require('react-dom/server');
    act = require('internal-test-utils').act;

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

  if (__DEV__) {
    // useDebugValue is a DEV-only hook
    it('useDebugValue throws when used in a class component', async () => {
      class Example extends React.Component {
        render() {
          React.useDebugValue('abc');
          return null;
        }
      }
      await expect(async () => {
        await act(() => {
          ReactTestRenderer.create(<Example />, {
            unstable_isConcurrent: true,
          });
        });
      }).rejects.toThrow(
        'Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen' +
          ' for one of the following reasons:\n' +
          '1. You might have mismatching versions of React and the renderer (such as React DOM)\n' +
          '2. You might be breaking the Rules of Hooks\n' +
// ... (2036 more lines)