1 | var assert = require("chai").assert;
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2 | var TraceUtils = require('../utils').TraceUtils;
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3 | var LangUtils = require('../utils').LangUtils;
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4 | var Q = require('q');
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5 | var SequentialEventEmitter = require('../emitter').SequentialEventEmitter;
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6 | describe("test sequential event emitter", function () {
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7 | |
8 |
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9 |
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10 |
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11 | function Messenger() {
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12 | Messenger.super_.bind(this)();
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13 | }
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14 | LangUtils.inherits(Messenger, SequentialEventEmitter);
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15 |
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16 | Messenger.prototype.send = function(to, message) {
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17 | var self = this;
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18 | return Q.Promise(function (resolve, reject) {
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19 | self.emit("message.new", to, message, function (err) {
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20 | if (err) {
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21 | return reject(err);
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22 | }
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23 | self.emit("message.sent", function () {
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24 | return resolve();
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25 | });
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26 | });
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27 | });
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28 | };
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29 |
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30 | it("should emit event", function () {
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31 | var msg = new Messenger();
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32 | msg.on("message.new", function (to, message, cb) {
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33 | TraceUtils.log("Message Event #1 (To:" + to + "): " + message);
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34 | setTimeout(function () {
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35 | return cb();
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36 | }, 1000);
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37 | });
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38 |
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39 | msg.prependListener("message.new", function (to, message, cb) {
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40 | TraceUtils.log("Message Event #0 (To:" + to + "): " + message);
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41 | setTimeout(function () {
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42 | return cb();
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43 | }, 2000);
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44 | });
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45 |
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46 | msg.on("message.new", function (to, message, cb) {
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47 | TraceUtils.log("Message Event #2 (To:" + to + "): " + message);
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48 | setTimeout(function () {
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49 | return cb();
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50 | }, 2000);
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51 | });
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52 | msg.once("message.sent", function (cb) {
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53 | TraceUtils.log("Message was succesfully sent");
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54 | setTimeout(function () {
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55 | return cb();
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56 | }, 2000);
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57 | });
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58 | return msg.send("George", "Hello!");
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59 | });
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60 |
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61 | it("should add and remove listener", function () {
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62 | var msg = new Messenger();
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63 | msg.on("message.new", function (to, message, cb) {
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64 | TraceUtils.log("Message Event #1 (To:" + to + "): " + message);
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65 | setTimeout(function () {
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66 | return cb();
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67 | }, 1000);
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68 | });
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69 |
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70 | msg.on("message.new", function (to, message, cb) {
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71 | TraceUtils.log("Message Event #2 (To:" + to + "): " + message);
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72 | setTimeout(function () {
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73 | return cb();
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74 | }, 2000);
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75 | });
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76 |
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77 | var onMessageNew = function onMessageNew(to, message, cb) {
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78 | TraceUtils.log("Message Event #3 (To:" + to + "): " + message);
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79 | setTimeout(function () {
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80 | return cb();
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81 | }, 2000);
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82 | };
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83 |
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84 | msg.on("message.new", onMessageNew);
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85 | msg.removeListener("message.new", onMessageNew);
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86 | assert.equal(msg.listenerCount("message.new"), 2, "Invalid number of event listeners");
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87 |
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88 | msg.once("message.sent", function (cb) {
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89 | TraceUtils.log("Message was succesfully sent");
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90 | setTimeout(function () {
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91 | return cb();
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92 | }, 2000);
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93 | });
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94 |
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95 | return msg.send("George", "Hello!");
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96 | });
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97 |
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98 | it("should throw error on first emitter", function () {
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99 | var msg = new Messenger();
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100 |
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101 | msg.on("message.new", function (to, message, cb) {
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102 | TraceUtils.log("Message Event #1 (To:" + to + "): " + message);
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103 | setTimeout(function () {
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104 | return cb(new Error("Operation cancelled"));
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105 | }, 1000);
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106 | });
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107 |
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108 | msg.on("message.new", function (to, message, cb) {
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109 | TraceUtils.log("Message Event #2 (To:" + to + "): " + message);
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110 | setTimeout(function () {
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111 | return cb();
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112 | }, 2000);
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113 | });
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114 | assert.equal(msg.listenerCount("message.new"), 2, "Invalid number of event listeners");
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115 | msg.once("message.sent", function (cb) {
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116 | TraceUtils.log("Message was succesfully sent");
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117 | setTimeout(function () {
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118 | return cb();
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119 | }, 2000);
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120 | });
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121 | return msg.send("George", "Hello!");
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122 | });
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123 | }); |
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