ReactLegacyMount-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
 */

'use strict';

const {COMMENT_NODE} = require('react-dom-bindings/src/client/HTMLNodeType');

let React;
let ReactDOM;
let ReactDOMClient;
let waitForAll;
let assertConsoleErrorDev;

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

    React = require('react');
    ReactDOM = require('react-dom');
    ReactDOMClient = require('react-dom/client');

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

  describe('unmountComponentAtNode', () => {
    // @gate !disableLegacyMode
    it('throws when given a non-node', () => {
      const nodeArray = document.getElementsByTagName('div');
      expect(() => {
        ReactDOM.unmountComponentAtNode(nodeArray);
      }).toThrowError('Target container is not a DOM element.');
    });

    // @gate !disableLegacyMode
    it('returns false on non-React containers', () => {
      const d = document.createElement('div');
      d.innerHTML = '<b>hellooo</b>';
      expect(ReactDOM.unmountComponentAtNode(d)).toBe(false);
      expect(d.textContent).toBe('hellooo');
    });

    // @gate !disableLegacyMode
    it('returns true on React containers', () => {
      const d = document.createElement('div');
      ReactDOM.render(<b>hellooo</b>, d);
      expect(d.textContent).toBe('hellooo');
      expect(ReactDOM.unmountComponentAtNode(d)).toBe(true);
      expect(d.textContent).toBe('');
    });
  });

  // @gate !disableLegacyMode
// ... (375 more lines)