| /** |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| |
| const events = require('../src/events'); |
| |
| describe('Cordova events', function () { |
| describe('emit method', function () { |
| it('Test 001 : should emit events to a listener', function () { |
| const logSpy = jasmine.createSpy('logSpy'); |
| events.on('log', logSpy); |
| |
| events.emit('log', 'a test message'); |
| expect(logSpy).toHaveBeenCalledWith('a test message'); |
| }); |
| |
| it('Test 002 : should report if there were any listeners or not', function () { |
| const r1 = events.emit('myname', 'first'); |
| expect(r1).toBe(false); |
| |
| const listenerSpy = jasmine.createSpy('listenerSpy'); |
| events.on('myname', listenerSpy); |
| const r2 = events.emit('myname', 'second'); |
| expect(r2).toBe(true); |
| expect(listenerSpy).toHaveBeenCalled(); |
| }); |
| }); |
| |
| describe('forwardEventsTo method', function () { |
| afterEach(function () { |
| events.forwardEventsTo(null); |
| }); |
| |
| it('Test 003 : should forward events to another event emitter', function () { |
| const EventEmitter = require('events').EventEmitter; |
| const anotherEventEmitter = new EventEmitter(); |
| const logSpy = jasmine.createSpy('logSpy'); |
| anotherEventEmitter.on('log', logSpy); |
| |
| events.forwardEventsTo(anotherEventEmitter); |
| events.emit('log', 'forwarding test message'); |
| expect(logSpy).toHaveBeenCalledWith('forwarding test message'); |
| }); |
| |
| it('Test 004 : should not go to infinite loop when trying to forward to self', function () { |
| expect(function () { |
| events.forwardEventsTo(events); |
| events.emit('log', 'test message'); |
| }).not.toThrow(); |
| }); |
| |
| it('Test 005 : should reset forwarding after trying to forward to self', function () { |
| const EventEmitter = require('events').EventEmitter; |
| const anotherEventEmitter = new EventEmitter(); |
| const logSpy = jasmine.createSpy('logSpy'); |
| anotherEventEmitter.on('log', logSpy); |
| |
| // should forward events to another event emitter at this point |
| events.forwardEventsTo(anotherEventEmitter); |
| events.emit('log', 'test message #1'); |
| expect(logSpy).toHaveBeenCalledWith('test message #1'); |
| |
| logSpy.calls.reset(); |
| |
| // should *not* forward events to another event emitter at this point |
| events.forwardEventsTo(events); |
| events.emit('log', 'test message #2'); |
| expect(logSpy).not.toHaveBeenCalled(); |
| }); |
| }); |
| }); |