@react-native-community/netinfo

/** * 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 */ import NetInfo from '../index'; import NativeInterface from '../internal/nativeInterface'; import {NetInfoStateType, NetInfoCellularGeneration} from '../internal/types'; import {DEVICE_CONNECTIVITY_EVENT} from '../internal/privateTypes'; import nativeModule from '../internal/nativeModule'; // Mock modules require('jest-fetch-mock').enableMocks(); jest.mock('./../internal/nativeModule', () => require('./../../jest/netinfo-mock'), ); describe('@react-native-community/netinfo fetch', () => { beforeEach(() => { jest.clearAllMocks(); }); describe('with cellular data types', () => { describe('4g cellular generation', () => { beforeEach(() => { jest.clearAllMocks(); // @ts-ignore nativeModule.getCurrentState.mockResolvedValue({ type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['4g'], }, }); }); function dataProvider() { return [ { description: 'should resolve the promise correctly with expected 4g settings', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['4g'], }, }, }, { description: 'should resolve the promise correctly when 4g returns not connected', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: false, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['4g'], }, }, }, { description: 'should resolve the promise correctly when 4g returns internet not reachable', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: false, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['4g'], }, }, }, ]; } dataProvider().forEach(testCase => { it(testCase.description, () => { // @ts-ignore nativeModule.getCurrentState.mockResolvedValue( testCase.expectedConnectionInfo, ); NativeInterface.eventEmitter.emit( DEVICE_CONNECTIVITY_EVENT, testCase.expectedConnectionInfo, ); expect(NetInfo.fetch()).resolves.toEqual( testCase.expectedConnectionInfo, ); }); }); }); describe('3g cellular generation', () => { beforeEach(() => { jest.clearAllMocks(); // @ts-ignore nativeModule.getCurrentState.mockResolvedValue({ type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['3g'], }, }); }); function dataProvider() { return [ { description: 'should resolve the promise correctly with expected settings', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['3g'], }, }, }, { description: 'should resolve the promise correctly when not connected', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: false, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['3g'], }, }, }, { description: 'should resolve the promise correctly when internet is not reachable', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: false, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['3g'], }, }, }, ]; } dataProvider().forEach(testCase => { it(testCase.description, () => { // @ts-ignore nativeModule.getCurrentState.mockResolvedValue( testCase.expectedConnectionInfo, ); NativeInterface.eventEmitter.emit( DEVICE_CONNECTIVITY_EVENT, testCase.expectedConnectionInfo, ); expect(NetInfo.fetch()).resolves.toEqual( testCase.expectedConnectionInfo, ); }); }); }); describe('2g cellular generation', () => { beforeEach(() => { jest.clearAllMocks(); // @ts-ignore nativeModule.getCurrentState.mockResolvedValue({ type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['2g'], }, }); }); function dataProvider() { return [ { description: 'should resolve the promise correctly with expected settings', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['2g'], }, }, }, { description: 'should resolve the promise correctly when not connected', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: false, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['2g'], }, }, }, { description: 'should resolve the promise correctly when internet is not reachable', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: false, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['2g'], }, }, }, ]; } dataProvider().forEach(testCase => { it(testCase.description, () => { // @ts-ignore nativeModule.getCurrentState.mockResolvedValue( testCase.expectedConnectionInfo, ); NativeInterface.eventEmitter.emit( DEVICE_CONNECTIVITY_EVENT, testCase.expectedConnectionInfo, ); expect(NetInfo.fetch()).resolves.toEqual( testCase.expectedConnectionInfo, ); }); }); }); describe('null cellular generation', () => { beforeEach(() => { jest.clearAllMocks(); // @ts-ignore nativeModule.getCurrentState.mockResolvedValue({ type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: null, }, }); }); function dataProvider() { return [ { description: 'should resolve the promise correctly with expected settings', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: null, }, }, }, { description: 'should resolve the promise correctly when not connected', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: false, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: null, }, }, }, { description: 'should resolve the promise correctly when internet is not reachable', expectedConnectionInfo: { type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: false, details: { isConnectionExpensive: true, cellularGeneration: null, }, }, }, ]; } dataProvider().forEach(testCase => { it(testCase.description, () => { // @ts-ignore nativeModule.getCurrentState.mockResolvedValue( testCase.expectedConnectionInfo, ); NativeInterface.eventEmitter.emit( DEVICE_CONNECTIVITY_EVENT, testCase.expectedConnectionInfo, ); expect(NetInfo.fetch()).resolves.toEqual( testCase.expectedConnectionInfo, ); }); }); }); }); describe('with unknown and no connection data types', () => { beforeEach(() => { jest.clearAllMocks(); // @ts-ignore nativeModule.getCurrentState.mockResolvedValue({ type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['4g'], }, }); }); function dataProvider() { return [ { description: 'should resolve the promise correctly when no connection is established (airplane mode)', expectedConnectionInfo: { type: NetInfoStateType.none, isConnected: false, isInternetReachable: true, details: null, }, }, { description: 'should resolve the promise correctly when connection type cannot be determined', expectedConnectionInfo: { type: NetInfoStateType.unknown, isConnected: false, isInternetReachable: true, details: null, }, }, ]; } dataProvider().forEach(testCase => { it(testCase.description, () => { // @ts-ignore nativeModule.getCurrentState.mockResolvedValue( testCase.expectedConnectionInfo, ); NativeInterface.eventEmitter.emit( DEVICE_CONNECTIVITY_EVENT, testCase.expectedConnectionInfo, ); expect(NetInfo.fetch()).resolves.toEqual( testCase.expectedConnectionInfo, ); }); }); }); describe('rejected promises are handled', () => { beforeEach(() => { jest.clearAllMocks(); // @ts-ignore nativeModule.getCurrentState.mockResolvedValue({ type: NetInfoStateType.cellular, isConnected: true, isInternetReachable: true, details: { isConnectionExpensive: true, cellularGeneration: NetInfoCellularGeneration['4g'], }, }); }); it('will properly reject a promise if the connection request cannot be resolved', async () => { const rejectionMessage = 'nope, no connection info for you'; // @ts-ignore nativeModule.getCurrentState.mockRejectedValue(rejectionMessage); try { await NetInfo.fetch(); } catch (error) { expect(error.message).toMatch(rejectionMessage); } }); }); });