1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/**
* 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();
}
});
});
});
});
|
