29 строки
851 B
JavaScript
29 строки
851 B
JavaScript
/**
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*
|
|
* @format
|
|
* @emails oncall+react_native
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
const SceneTracker = require('../SceneTracker');
|
|
|
|
describe('setActiveScene', function() {
|
|
it('can handle multiple listeners and unsubscribe', function() {
|
|
const listeners = [jest.fn(), jest.fn(), jest.fn()];
|
|
const subscriptions = listeners.map(listener =>
|
|
SceneTracker.addActiveSceneChangedListener(listener),
|
|
);
|
|
subscriptions[1].remove();
|
|
const newScene = {name: 'scene1'};
|
|
SceneTracker.setActiveScene(newScene);
|
|
expect(listeners[0]).toBeCalledWith(newScene);
|
|
expect(listeners[1]).not.toBeCalled();
|
|
expect(listeners[2]).toBeCalledWith(newScene);
|
|
});
|
|
});
|