react-native/Libraries/CustomComponents/Navigator/Navigation/__tests__/NavigationContext-test.js

/**
 * Copyright (c) 2015, Facebook, Inc.  All rights reserved.
 *
 * Facebook, Inc. ("Facebook") owns all right, title and interest, including
 * all intellectual property and other proprietary rights, in and to the React
 * Native CustomComponents software (the "Software").  Subject to your
 * compliance with these terms, you are hereby granted a non-exclusive,
 * worldwide, royalty-free copyright license to (1) use and copy the Software;
 * and (2) reproduce and distribute the Software as part of your own software
 * ("Your Software").  Facebook reserves all rights not expressly granted to
 * you in this license agreement.
 *
 * THE SOFTWARE AND DOCUMENTATION, IF ANY, ARE PROVIDED "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES (INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE) ARE DISCLAIMED.
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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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'use strict';

jest
  .dontMock('EmitterSubscription')
  .dontMock('EventSubscription')
  .dontMock('EventEmitter')
  .dontMock('EventSubscriptionVendor')
  .dontMock('NavigationContext')
  .dontMock('NavigationEvent')
  .dontMock('NavigationEventEmitter')
  .dontMock('invariant');

var NavigationContext = require('NavigationContext');

describe('NavigationContext', () => {
  it('defaults `currentRoute` to null', () => {
    var context = new NavigationContext();
    expect(context.currentRoute).toEqual(null);
  });

  it('updates `currentRoute`', () => {
    var context = new NavigationContext();
    context.emit('didfocus', {route: {name: 'a'}});
    expect(context.currentRoute.name).toEqual('a');
  });
});