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+/**
+ * Copyright 2014 IBM Corp.
+ *
+ * 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.
+ **/
+
+var should = require("should");
+var http = require('http');
+var express = require('express');
+var app = express();
+var WebSocket = require('ws');
+
+var comms = require("../../red/comms.js");
+var address = '127.0.0.1';
+var listenPort = 0; // use ephemeral port
+
+describe("comms", function() {
+ describe("with default keepalive", function() {
+ var server;
+ var url;
+ var port;
+ before(function(done) {
+ server = http.createServer(function(req,res){app(req,res)});
+ comms.init(server, {});
+ server.listen(listenPort, address);
+ server.on('listening', function() {
+ port = server.address().port;
+ url = 'http://' + address + ':' + port + '/comms';
+ comms.start();
+ done();
+ });
+ });
+
+ after(function() {
+ comms.stop();
+ });
+
+ it('accepts connection', function(done) {
+ var ws = new WebSocket(url);
+ ws.on('open', function() {
+ ws.close();
+ done();
+ });
+ });
+
+ it('publishes message after subscription', function(done) {
+ var ws = new WebSocket(url);
+ ws.on('open', function() {
+ ws.send('{"subscribe":"topic1"}');
+ comms.publish('topic1', 'foo');
+ });
+ ws.on('message', function(msg) {
+ msg.should.equal('{"topic":"topic1","data":"foo"}');
+ ws.close();
+ done();
+ });
+ });
+
+ it('publishes retained message for subscription', function(done) {
+ comms.publish('topic2', 'bar', true);
+ var ws = new WebSocket(url);
+ ws.on('open', function() {
+ ws.send('{"subscribe":"topic2"}');
+ });
+ ws.on('message', function(msg) {
+ msg.should.equal('{"topic":"topic2","data":"bar"}');
+ ws.close();
+ done();
+ });
+ });
+
+ it('retained message is deleted by non-retained message', function(done) {
+ comms.publish('topic3', 'retained', true);
+ comms.publish('topic3', 'non-retained');
+ var ws = new WebSocket(url);
+ ws.on('open', function() {
+ ws.send('{"subscribe":"topic3"}');
+ comms.publish('topic3', 'new');
+ });
+ ws.on('message', function(msg) {
+ msg.should.equal('{"topic":"topic3","data":"new"}');
+ ws.close();
+ done();
+ });
+ });
+
+ it('malformed messages are ignored',function(done) {
+ var ws = new WebSocket(url);
+ ws.on('open', function() {
+ ws.send('not json');
+ ws.send('[]');
+ ws.send('{"subscribe":"topic3"}');
+ comms.publish('topic3', 'correct');
+ });
+ ws.on('message', function(msg) {
+ msg.should.equal('{"topic":"topic3","data":"correct"}');
+ ws.close();
+ done();
+ });
+ });
+
+ // The following test currently fails due to minimum viable
+ // implementation. More test should be written to test topic
+ // matching once this one is passing
+
+ if (0) {
+ it('receives message on correct topic', function(done) {
+ var ws = new WebSocket(url);
+ ws.on('open', function() {
+ ws.send('{"subscribe":"topic4"}');
+ comms.publish('topic5', 'foo');
+ comms.publish('topic4', 'bar');
+ });
+ ws.on('message', function(msg) {
+ msg.should.equal('{"topic":"topic4","data":"bar"}');
+ ws.close();
+ done();
+ });
+ });
+ }
+ });
+
+ describe("keep alives", function() {
+ var server;
+ var url;
+ var port;
+ before(function(done) {
+ server = http.createServer(function(req,res){app(req,res)});
+ comms.init(server, {webSocketKeepAliveTime: 100});
+ server.listen(listenPort, address);
+ server.on('listening', function() {
+ port = server.address().port;
+ url = 'http://' + address + ':' + port + '/comms';
+ comms.start();
+ done();
+ });
+ });
+ after(function() {
+ comms.stop();
+ });
+ it('are sent', function(done) {
+ var ws = new WebSocket(url);
+ var count = 0;
+ ws.on('message', function(data) {
+ var msg = JSON.parse(data);
+ msg.should.have.property('topic','hb');
+ msg.should.have.property('data').be.a.Number;
+ count++;
+ if (count == 3) {
+ ws.close();
+ done();
+ }
+ });
+ });
+ it('are not sent if other messages are sent', function(done) {
+ var ws = new WebSocket(url);
+ var count = 0;
+ var interval;
+ ws.on('open', function() {
+ ws.send('{"subscribe":"foo"}');
+ interval = setInterval(function() {
+ comms.publish('foo', 'bar');
+ }, 50);
+ });
+ ws.on('message', function(data) {
+ var msg = JSON.parse(data);
+ msg.should.have.property('topic', 'foo');
+ msg.should.have.property('data', 'bar');
+ count++;
+ if (count == 5) {
+ clearInterval(interval);
+ ws.close();
+ done();
+ }
+ });
+ });
+ });
+
+});