mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Tim Yung
77ecc7ede1
Summary: Changelog: [General][Internal] Reviewed By: zertosh Differential Revision: D31883447 fbshipit-source-id: cbbf85e4bf935096d242336f41bf0cc5d6f92359
29 lines
853 B
JavaScript
29 lines
853 B
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @emails oncall+react_native
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*/
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'use strict';
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const SceneTracker = require('../SceneTracker');
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describe('setActiveScene', function () {
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it('can handle multiple listeners and unsubscribe', function () {
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const listeners = [jest.fn(), jest.fn(), jest.fn()];
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const subscriptions = listeners.map(listener =>
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SceneTracker.addActiveSceneChangedListener(listener),
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);
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subscriptions[1].remove();
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const newScene = {name: 'scene1'};
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SceneTracker.setActiveScene(newScene);
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expect(listeners[0]).toBeCalledWith(newScene);
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expect(listeners[1]).not.toBeCalled();
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expect(listeners[2]).toBeCalledWith(newScene);
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});
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});
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