| /* |
| * Copyright 2017-present Open Networking Foundation |
| * Licensed 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. |
| */ |
| |
| (function () { |
| 'use strict'; |
| |
| const chai = require('chai'); |
| const expect = chai.expect; |
| const sinon = require('sinon'); |
| const sinonChai = require('sinon-chai'); |
| const mockery = require('mockery'); |
| chai.use(sinonChai); |
| |
| const socketSpy = sinon.spy(); |
| |
| const mockSocket = { |
| get: () => { |
| return { |
| emit: socketSpy |
| } |
| } |
| }; |
| |
| const fakekafka = { |
| KafkaConsumer: { |
| createReadStream: sinon.stub() |
| } |
| } |
| |
| const channelName = 'Site'; |
| const msgTopic = 'xos.gui_events'; |
| |
| describe('The event system', () => { |
| |
| before(() => { |
| |
| // Enable mockery to mock objects |
| mockery.enable({ |
| warnOnReplace: false, |
| warnOnUnregistered: false |
| }); |
| |
| // Override the node-rdkafka module with our fakekafka instance |
| mockery.registerMock('node-rdkafka', fakekafka); |
| |
| // mock the socketIo client to have a spy |
| mockery.registerMock('./websocket.js', mockSocket); |
| |
| }); |
| |
| after(() => { |
| mockery.disable(); |
| }); |
| |
| // run after each test |
| beforeEach(() => { |
| socketSpy.reset(); |
| }); |
| |
| afterEach(() => { |
| var name = require.resolve('../src/controllers/kafka.js'); |
| delete require.cache[name]; |
| }); |
| |
| describe('when connection fails', () => { |
| beforeEach((done) => { |
| fakekafka.KafkaConsumer.createReadStream |
| .onFirstCall().throws() |
| .onSecondCall().returns(true) |
| |
| require('../src/controllers/kafka.js'); |
| setTimeout(() => { |
| done(); |
| }, 10); |
| }); |
| |
| it('should try to reconnect after 5 seconds', (done) => { |
| setTimeout(() => { |
| expect(fakekafka.KafkaConsumer.createReadStream.calledTwice).to.be.true; |
| done(); |
| }, 6 * 1000); |
| }).timeout(7 * 1000); |
| |
| afterEach(() => { |
| fakekafka.KafkaConsumer.createReadStream = sinon.stub() |
| }) |
| }); |
| |
| describe('when is connected', () => { |
| const trigger = {} |
| |
| const mockStream = { |
| on: (event, cb) => { |
| trigger[event] = cb |
| }, |
| consumer: { |
| on: sinon.spy() |
| } |
| } |
| beforeEach((done) => { |
| fakekafka.KafkaConsumer.createReadStream.returns(mockStream) |
| require('../src/controllers/kafka.js'); |
| |
| setTimeout(() => { |
| done(); |
| }, 10); |
| }); |
| |
| it('should send a websocket event when text Kafka event is received', (done) => { |
| trigger.data({topic:msgTopic, |
| key:channelName, |
| timestamp:1234, |
| value:'I am sending a message.', |
| }); |
| |
| setTimeout(() => { |
| expect(socketSpy).to.have.been.called; |
| expect(socketSpy).to.have.been.calledWith('update', { |
| model: channelName, |
| msg: 'I am sending a message.' |
| }); |
| done(); |
| }, 500) |
| }); |
| |
| it('should send a websocket event when JSON Kafka event is received', (done) => { |
| trigger.data({topic:msgTopic, |
| key:channelName, |
| timestamp:2345, |
| value:JSON.stringify({msg: 'JSON Message'}), |
| }); |
| |
| setTimeout(() => { |
| expect(socketSpy).to.have.been.called; |
| expect(socketSpy).to.have.been.calledWith('update', { |
| model: channelName, |
| msg: {msg: 'JSON Message'} |
| }); |
| done(); |
| }, 1000) |
| }); |
| |
| it('should send a websocket event with msg: Deleted when JSON object has deleted:true', (done) => { |
| trigger.data({topic:msgTopic, |
| key:channelName, |
| timestamp:3456, |
| value:JSON.stringify({msg: 'Deleted', deleted: true}), |
| }); |
| |
| setTimeout(() => { |
| expect(socketSpy).to.have.been.called; |
| expect(socketSpy).to.have.been.calledWith('remove', { |
| model: channelName, |
| msg: { |
| msg: 'Deleted', |
| deleted: true |
| }, |
| deleted: true |
| }); |
| |
| done(); |
| }, 1000) |
| }); |
| |
| it('should not send a websocket event if the Kafka key is Diag', (done) => { |
| trigger.data({topic:msgTopic, |
| key:'Diag', |
| timestamp:4567, |
| value:JSON.stringify({msg: 'Diag Message'}), |
| }); |
| |
| setTimeout(() => { |
| expect(socketSpy).not.to.have.been.called; |
| done(); |
| }, 1000) |
| }); |
| }); |
| }); |
| })(); |