Ошибка нарушения инварианта при издевательстве navigator.geolocation.getCurrentPosition - PullRequest
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Ошибка нарушения инварианта при издевательстве navigator.geolocation.getCurrentPosition

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/ 18 октября 2018

Попытка проверить библиотеку, которая использует navigator.geolocation в react-native.

Ошибка: 

IL  __tests__/accessMgr.test.js
  ● Test suite failed to run

    Invariant Violation: Native module cannot be null.

      at invariant (node_modules/fbjs/lib/invariant.js:44:15)
      at new NativeEventEmitter (node_modules/react-native/Libraries/EventEmitter/NativeEventEmitter.js:32:1)
      at Object.<anonymous> (node_modules/react-native/Libraries/Geolocation/Geolocation.js:21:26)
      at node_modules/react-native/Libraries/Core/InitializeCore.js:196:58
      at Object.getValue [as geolocation] (node_modules/react-native/Libraries/Utilities/defineLazyObjectProperty.js:44:10)
      at Object.<anonymous> (src/tools/accessmgr/geo.js:5:41)

Строка, дающая ошибку: 

const { geolocation: { getCurrentPosition } } = navigator;

Тест: 

import AccessMgr from '../src/tools/accessmgr/accessmgr';

const P = Promise;
const mockFn = jest.fn().mockImplementation;
const coords = {
  coords: {
    latitude: 51.1,
    longitude: 45.3,
  },
};

const mockGeolocation = {
  getCurrentPosition: mockFn(yeah => P.resolve(yeah(coords))),
};

navigator.geolocation = mockGeolocation;

test('isDeviceReady returns true if all services has access granted', () => {
  const accessMgr = new AccessMgr({
    photobook: true,
    geo: true,
    push: true,
  });

  expect(accessMgr.isDeviceReady()).toBeTruthy();
});
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