/**

 * 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.

 *

 * @flow

 */

describe('Bridge', () => {

  let Bridge;

  beforeEach(() => {

    Bridge = require('react-devtools-shared/src/bridge').default;

  });

  // @reactVersion >=16.0

  it('should shutdown properly', () => {

    const wall = {

      listen: jest.fn(() => () => {}),

      send: jest.fn(),

    };

    const bridge = new Bridge(wall);

    const shutdownCallback = jest.fn();

    bridge.addListener('shutdown', shutdownCallback);

    // Check that we're wired up correctly.

    bridge.send('reloadAppForProfiling');

    jest.runAllTimers();

    expect(wall.send).toHaveBeenCalledWith('reloadAppForProfiling');

    // Should flush pending messages and then shut down.

    wall.send.mockClear();

    bridge.send('update', '1');

    bridge.send('update', '2');

    bridge.shutdown();

    jest.runAllTimers();

    expect(wall.send).toHaveBeenCalledWith('update', '1');

    expect(wall.send).toHaveBeenCalledWith('update', '2');

    expect(wall.send).toHaveBeenCalledWith('shutdown');

    expect(shutdownCallback).toHaveBeenCalledTimes(1);

    // Verify that the Bridge doesn't send messages after shutdown.

    jest.spyOn(console, 'warn').mockImplementation(() => {});

    wall.send.mockClear();

    bridge.send('should not send');

    jest.runAllTimers();

    expect(wall.send).not.toHaveBeenCalled();

    expect(console.warn).toHaveBeenCalledWith(

      'Cannot send message "should not send" through a Bridge that has been shutdown.',

    );

  });

});