1 | var util = require('util');
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2 | var PubSub = require('../lib/pubsub_service');
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3 | var Logger = require('../lib/logger');
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4 | var Runtime = require('../zetta_runtime');
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5 | var Device = Runtime.Device;
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6 | var Scientist = require('zetta-scientist');
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7 | var assert = require('assert');
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8 | var SensorDriver = require('./fixture/sensor_driver');
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9 | var TestDriver = require('./fixture/example_driver');
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10 | var MemRegistry = require('./fixture/mem_registry');
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11 |
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12 | describe('Driver', function() {
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13 | var machine = null;
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14 | var pubsub = null;
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15 | var log = null;
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16 | var reg = null;
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17 |
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18 | beforeEach(function(){
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19 | reg = new MemRegistry();
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20 | pubsub = new PubSub();
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21 | log = new Logger({pubsub: pubsub});
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22 | log.pubsub = pubsub;
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23 |
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24 | machine = Scientist.create(TestDriver);
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25 | machine._pubsub = pubsub;
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26 | machine._log = log;
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27 | machine._registry = reg;
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28 |
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29 |
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30 | machine = Scientist.init(machine);
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31 | });
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32 |
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33 | it('should be attached to the zetta runtime', function() {
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34 | assert.ok(Runtime.Device);
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35 | });
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36 |
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37 | it('should expose an enableStream function', function() {
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38 | assert.ok(Device.prototype.enableStream);
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39 | });
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40 |
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41 | it('should expose a disableStream function', function() {
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42 | assert.ok(Device.prototype.disableStream);
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43 | });
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44 |
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45 | describe('Configuration', function() {
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46 | it('should be configured by Scientist#configure', function() {
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47 | assert.ok(machine.call);
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48 | assert.equal(machine.type, 'testdriver');
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49 | assert.equal(machine.state, 'ready');
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50 | assert.equal(machine.name, 'Matt\'s Test Device');
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51 | });
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52 |
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53 | it('should have an id automatically generated for it', function(){
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54 | assert.ok(machine.id);
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55 | });
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56 |
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57 | it('should have properties function', function() {
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58 | assert.equal(typeof machine.properties, 'function');
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59 | });
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60 |
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61 | it('properties function should return filtered property list', function() {
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62 | machine._foo = 123;
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63 | var p = machine.properties();
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64 | assert.equal(p._foo, undefined);
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65 | });
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66 |
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67 | });
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68 |
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69 | describe('Logging', function() {
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70 | it('should expose a .log method', function() {
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71 | assert.equal(typeof machine.log, 'function');
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72 | });
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73 |
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74 | it('should have log level functions', function() {
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75 | assert.ok(machine.log);
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76 | assert.ok(machine.info);
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77 | assert.ok(machine.warn);
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78 | assert.ok(machine.error);
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79 | });
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80 | });
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81 |
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82 |
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83 | describe('Transitions', function() {
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84 |
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85 | it('should not throw when calling an invalid transition name.', function(done) {
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86 | machine.call('not-a-transition', function(err) {
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87 | assert(err);
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88 | done();
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89 | });
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90 | });
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91 |
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92 | it('should not throw when calling a transition when destroyed.', function(done) {
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93 | machine.state = 'zetta-device-destroy';
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94 | machine.call('prepare', function(err) {
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95 | assert(err);
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96 | assert.equal(err.message, 'Machine destroyed. Cannot use transition prepare');
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97 | done();
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98 | });
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99 | });
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100 |
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101 | it('should not throw when calling a transition not allowed in invalid state.', function(done) {
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102 | machine.state = 'not-a-state';
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103 | machine.call('prepare', function(err) {
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104 | assert(err);
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105 | done();
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106 | });
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107 | });
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108 |
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109 | it('avialable transitions should not throw when in invalid state.', function(done) {
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110 | machine.state = 'not-a-state';
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111 | machine.transitionsAvailable();
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112 | done();
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113 | });
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114 |
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115 | it('should change the state from ready to changed when calling change.', function(done) {
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116 | machine.call('change', function() {
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117 | assert.equal(machine.state, 'changed');
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118 | done();
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119 | });
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120 | });
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121 |
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122 | it('should be able to call transiton afterchange after change was called', function(done) {
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123 | machine.call('change', function() {
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124 | assert.equal(machine.state, 'changed');
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125 | machine.call('prepare', function(err) {
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126 | assert.equal(machine.state, 'ready');
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127 | done();
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128 | });
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129 | });
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130 | });
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131 |
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132 | it('should not throw an error when a disallowed transition tries to happen.', function(done) {
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133 | assert.doesNotThrow(function(){
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134 | machine.call('change', function() {
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135 | machine.call('change');
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136 | done();
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137 | });
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138 | });
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139 | });
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140 |
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141 | it('should return error in callback.', function(done) {
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142 | machine.call('error', 'some error', function(err) {
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143 | assert(err instanceof Error);
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144 | done();
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145 | });
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146 | });
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147 |
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148 | it('should have transitions emitted like events.', function(done) {
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149 | machine.on('change', function() {
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150 | done();
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151 | });
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152 |
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153 | machine.call('change');
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154 | });
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155 |
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156 | it('should publish transitions to pubsub', function(done) {
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157 | var topic = machine.type + '/' + machine.id + '/logs';
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158 |
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159 | var recv = 0;
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160 | pubsub.subscribe(topic, function(topic, msg) {
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161 | assert.ok(msg.timestamp);
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162 | assert.ok(msg.topic);
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163 | assert.ok(!msg.data);
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164 | assert.ok(msg.properties);
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165 | assert.ok(msg.input);
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166 | assert.ok(msg.transition);
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167 | recv++;
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168 | });
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169 | machine.call('change');
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170 | setImmediate(function() {
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171 | assert.equal(recv, 1);
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172 | done();
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173 | });
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174 | });
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175 |
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176 | it('should publish transitions to logs', function(done) {
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177 | var recv = 0;
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178 | pubsub.subscribe('logs', function(topic, msg) {
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179 | assert.ok(msg.timestamp);
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180 | assert.ok(msg.topic);
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181 | assert.ok(!msg.data);
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182 | assert.ok(msg.properties);
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183 | assert.ok(msg.input);
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184 | assert.ok(msg.transition);
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185 | recv++;
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186 | });
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187 | machine.call('change');
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188 | setImmediate(function() {
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189 | assert.equal(recv, 1);
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190 | done();
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191 | });
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192 | });
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193 |
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194 | it('transitionsAvailable should return proper transitions', function() {
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195 |
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196 |
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197 |
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198 | machine.state = 'ready';
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199 | var transitions = machine.transitionsAvailable();
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200 | assert(Object.keys(transitions).indexOf('change') > -1);
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201 | assert(Object.keys(transitions).indexOf('test') > -1);
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202 |
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203 | machine.state = 'changed';
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204 | var transitions = machine.transitionsAvailable();
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205 | assert(Object.keys(transitions).indexOf('prepare') > -1);
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206 | assert(Object.keys(transitions).indexOf('test') > -1);
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207 |
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208 | });
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209 | });
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210 |
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211 | describe('Monitors', function(){
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212 |
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213 | it('should be able to read state property', function() {
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214 | assert.equal(machine.state, 'ready');
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215 | });
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216 |
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217 | it('should be able to read monitors properties', function() {
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218 | assert.equal(machine.foo, 0);
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219 | machine.foo = 1;
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220 | assert.equal(machine.foo, 1);
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221 | });
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222 |
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223 | it('should be able to pass disable option to monitor', function() {
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224 | assert.equal(machine._streams['disabledMonitor'].enabled, false);
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225 | assert.equal(machine._streams['enabledMonitor'].enabled, true);
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226 | });
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227 | });
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228 |
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229 | describe('Streams', function(){
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230 |
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231 | function wireUpPubSub(stream, done){
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232 | pubsub.publish = function(name, data){
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233 | assert.ok(name);
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234 | assert.ok(data);
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235 | assert.ok(name.indexOf(stream) > -1);
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236 | done();
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237 | }
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238 | }
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239 |
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240 | it('should stream values of foo once configured', function(done){
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241 | assert.ok(machine.streams.foo);
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242 | wireUpPubSub('foo', done);
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243 | machine.foo++;
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244 | });
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245 |
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246 | it('should be able to pass disable option to stream', function() {
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247 | assert.equal(machine._streams['disabledStream'].enabled, false);
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248 | assert.equal(machine._streams['enabledStream'].enabled, true);
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249 | });
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250 |
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251 | it('should have createReadSteam on device', function(){
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252 | assert.ok(machine.createReadStream);
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253 | assert.ok(machine.createReadStream('foo'));
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254 | });
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255 |
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256 | it('createReadStream should return values from stream', function(done){
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257 | var s = machine.createReadStream('foo');
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258 | s.on('data', function() {
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259 | done();
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260 | });
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261 | machine.foo++;
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262 | });
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263 |
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264 | it('createReadStream stream when paused shoud not recieve any updates', function(done){
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265 | var s = machine.createReadStream('foo');
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266 | var recv = 0;
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267 | s.on('data', function() {
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268 | recv++;
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269 | if (recv === 1) {
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270 | s.pause();
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271 | machine.foo++;
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272 | setTimeout(done, 10);
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273 | } else {
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274 | throw new Error('Should not recieve more than one data event');
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275 | }
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276 | });
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277 | machine.foo++;
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278 | });
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279 |
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280 | it('should stream values of bar once configured', function(done){
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281 | assert.ok(machine.streams.bar);
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282 | wireUpPubSub('bar', done);
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283 | machine.incrementStreamValue();
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284 | });
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285 |
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286 | it('should create a state stream when transitions are present', function() {
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287 | assert.ok(machine.streams.state);
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288 | });
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289 |
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290 | it('should not create a state stream when no transitions are present', function() {
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291 | var machine = Scientist.init(Scientist.create(SensorDriver));
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292 | assert(!machine.streams.state);
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293 | });
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294 | });
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295 |
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296 | describe('Device.save', function() {
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297 |
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298 | it('save should be implemented on device', function() {
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299 | assert.equal(typeof machine.save, 'function');
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300 | });
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301 |
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302 | it('save should update the registry with new property values', function(cb) {
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303 |
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304 | reg.get(machine.id, function(err, result) {
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305 | assert(err);
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306 |
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307 | machine.someval = 123;
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308 | machine._hidden = 'some-string';
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309 | machine.save(function(err) {
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310 | assert(!err);
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311 |
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312 | reg.get(machine.id, function(err, result) {
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313 | assert.equal(err, null);
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314 | assert.equal(result.id, machine.id);
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315 | assert.equal(result.someval, 123);
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316 | assert.equal(typeof result._hidden, 'undefined');
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317 | cb();
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318 | });
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319 | });
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320 | });
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321 | });
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322 |
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323 | });
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324 |
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325 | describe('Remote Update and Fetch Hooks', function() {
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326 |
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327 | it('can pass config a remoteFetch function to be called when .properties() is called', function() {
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328 | var Device = Runtime.Device;
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329 | var SomeDevice = function() {
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330 | this.hidden = 'hidden prop';
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331 | Device.call(this);
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332 | };
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333 | util.inherits(SomeDevice, Device);
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334 | SomeDevice.prototype.init = function(config) {
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335 | config
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336 | .type('some-device')
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337 | .name('device-1')
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338 | .remoteFetch(function() {
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339 | assert.equal(this.hidden, 'hidden prop');
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340 | return { prop: 123 };
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341 | })
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342 | };
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343 |
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344 | var machine = Scientist.init(Scientist.create(SomeDevice));
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345 | assert.deepEqual(machine.properties(), {
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346 | name: 'device-1',
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347 | prop: 123,
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348 | type: 'some-device',
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349 | id: machine.id
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350 | });
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351 | })
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352 |
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353 | it('handle remote update method, will update non reserved properties and remove old properties', function(done) {
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354 | var Device = Runtime.Device;
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355 | var SomeDevice = function() {
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356 | this.ip = '1.2.3.4';
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357 | this.mutable = 'abc';
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358 | this.deleted = 'gone after update';
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359 | Device.call(this);
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360 | };
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361 | util.inherits(SomeDevice, Device);
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362 | SomeDevice.prototype.init = function(config) {
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363 | config
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364 | .type('some-device')
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365 | .name('device-1');
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366 | };
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367 |
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368 | var machine = Scientist.init(Scientist.create(SomeDevice));
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369 | machine._registry = reg;
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370 | machine._pubsub = pubsub;
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371 | machine._log = log;
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372 | machine._handleRemoteUpdate({ mutable: 123 }, function(err) {
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373 | assert.equal(err, null);
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374 | assert.equal(machine.ip, undefined);
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375 | assert.equal(machine.mutable, 123);
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376 | assert.equal(machine.deleted, undefined);
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377 | done();
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378 | });
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379 | })
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380 |
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381 |
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382 | it('can pass config a remoteUpdate function to be called when remoteUpdates are called', function(done) {
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383 | var Device = Runtime.Device;
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384 | var SomeDevice = function() {
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385 | this.ip = '1.2.3.4';
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386 | this.mutable = 'abc';
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387 | this.deleted = 'gone after update';
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388 | Device.call(this);
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389 | };
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390 | util.inherits(SomeDevice, Device);
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391 | SomeDevice.prototype.init = function(config) {
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392 | config
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393 | .type('some-device')
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394 | .name('device-1')
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395 | .remoteUpdate(function(properties, cb) {
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396 | var self = this;
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397 |
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398 | delete properties.ip;
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399 |
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400 | Object.keys(properties).forEach(function(key) {
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401 | self[key] = properties[key];
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402 | });
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403 |
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404 | this.save(cb);
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405 | })
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406 | };
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407 |
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408 | var machine = Scientist.init(Scientist.create(SomeDevice));
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409 | machine._registry = reg;
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410 | machine._pubsub = pubsub;
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411 | machine._log = log;
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412 | machine._handleRemoteUpdate({ mutable: 123 }, function(err) {
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413 | assert.equal(err, null);
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414 | assert.equal(machine.ip, '1.2.3.4');
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415 | assert.equal(machine.mutable, 123);
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416 | done();
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417 | });
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418 | });
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419 | });
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420 |
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421 | describe('Deletion', function() {
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422 | it('should have a destroy function', function() {
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423 | assert.ok(machine.destroy);
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424 | });
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425 |
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426 | it('should emit a destroy event when destroy is called.', function(done) {
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427 | machine.on('destroy', function(m) {
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428 | assert.ok(m);
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429 | done();
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430 | });
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431 | machine.destroy();
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432 | });
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433 |
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434 | it('handle remote destroy method, will return true by default', function(done) {
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435 | var Device = Runtime.Device;
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436 | var SomeDevice = function() {
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437 | this.ip = '1.2.3.4';
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438 | this.mutable = 'abc';
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439 | this.deleted = 'gone after update';
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440 | Device.call(this);
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441 | };
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442 | util.inherits(SomeDevice, Device);
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443 | SomeDevice.prototype.init = function(config) {
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444 | config
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445 | .type('some-device')
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446 | .name('device-1');
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447 | };
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448 |
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449 | var machine = Scientist.init(Scientist.create(SomeDevice));
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450 | machine._registry = reg;
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451 | machine._pubsub = pubsub;
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452 | machine._log = log;
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453 | machine._handleRemoteDestroy(function(err, destroyFlag) {
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454 | assert.equal(err, null);
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455 | assert.equal(destroyFlag, true);
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456 | done();
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457 | });
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458 | });
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459 | });
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460 | });
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