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EnterLeaveEventPlugin-test.js — react Source File

Architecture documentation for EnterLeaveEventPlugin-test.js, a javascript file in the react codebase.

File javascript BabelCompiler Validation 2 classes

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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';

let React;
let ReactDOM;
let ReactDOMClient;
let act;

describe('EnterLeaveEventPlugin', () => {
  let container;

  beforeEach(() => {
    jest.resetModules();

    React = require('react');
    ReactDOM = require('react-dom');
    ReactDOMClient = require('react-dom/client');
    act = require('internal-test-utils').act;

    // The container has to be attached for events to fire.
    container = document.createElement('div');
    document.body.appendChild(container);
  });

  afterEach(() => {
    document.body.removeChild(container);
    container = null;
  });

  it('should set onMouseLeave relatedTarget properly in iframe', async () => {
    const iframe = document.createElement('iframe');
    container.appendChild(iframe);
    const iframeDocument = iframe.contentDocument;
    iframeDocument.write(
      '<!DOCTYPE html><html><head></head><body><div></div></body></html>',
    );
    iframeDocument.close();

    const leaveEvents = [];
    const root = ReactDOMClient.createRoot(
      iframeDocument.body.getElementsByTagName('div')[0],
    );
    await act(() => {
      root.render(
        <div
          onMouseLeave={e => {
            e.persist();
            leaveEvents.push(e);
          }}
        />,
      );
    });
// ... (272 more lines)

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Frequently Asked Questions

What does EnterLeaveEventPlugin-test.js do?
EnterLeaveEventPlugin-test.js is a source file in the react codebase, written in javascript. It belongs to the BabelCompiler domain, Validation subdomain.
Where is EnterLeaveEventPlugin-test.js in the architecture?
EnterLeaveEventPlugin-test.js is located at packages/react-dom/src/events/plugins/__tests__/EnterLeaveEventPlugin-test.js (domain: BabelCompiler, subdomain: Validation, directory: packages/react-dom/src/events/plugins/__tests__).

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