Mercurial > pub > ImplabNet

annotate Implab.Test/PollingComponentTests.cs @ 209:a867536c68fc v2

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Bound promise to CancellationToken Added new states to ExecutionSate enum. Added Safe.Guard() method to handle cleanup of the result of the promise
author cin
date Wed, 16 Nov 2016 03:06:08 +0300
parents 8200ab154c8a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 using System;
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2 using System.Reflection;
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3 using System.Threading;
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4 using Implab.Parallels;
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5 using Implab.Components;
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6 using Implab.Test.Mock;
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7
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8 #if MONO
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9
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10 using NUnit.Framework;
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11 using TestClassAttribute = NUnit.Framework.TestFixtureAttribute;
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12 using TestMethodAttribute = NUnit.Framework.TestAttribute;
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13 using AssertFailedException = NUnit.Framework.AssertionException;
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14 #else
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15
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16 using Microsoft.VisualStudio.TestTools.UnitTesting;
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17
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18 #endif
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19
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20 namespace Implab.Test {
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21 [TestClass]
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22 public class PollingComponentTests {
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23 static void ShouldThrow(Action action) {
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24 try {
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25 action();
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26 Assert.Fail();
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27 } catch (AssertFailedException) {
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28 throw;
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29 } catch {
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30 }
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31 }
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32
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33 [TestMethod]
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34 public void NormalFlowTest() {
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35 var comp = new MockPollingComponent(TimeSpan.FromMilliseconds(1), null, false);
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36
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37 Assert.AreEqual(ExecutionState.Created, comp.State);
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38
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39 comp.Initialize();
203
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40
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41 Assert.AreEqual(ExecutionState.Ready, comp.State);
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42
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43 comp.Start().Join(1000);
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44
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45 Assert.AreEqual(ExecutionState.Running, comp.State);
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46
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47 comp.Stop().Join(1000);
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48
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49 Assert.AreEqual(ExecutionState.Disposed, comp.State);
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50
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51 }
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52
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53 [TestMethod]
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54 public void ShouldStartTicks() {
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55 var signal = new Signal();
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56
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57 var comp = new MockPollingComponent(TimeSpan.FromMilliseconds(1), null, true);
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58 comp.MockTick = ct => {
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59 signal.Set();
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60 return Promise.Success;
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61 };
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62
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63 comp.Start().Join(1000);
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64 signal.Wait(1000);
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65 comp.Stop().Join(1000);
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66 }
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67
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68 [TestMethod]
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69 public void StopShouldWaitForTickToComplete() {
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70 var comp = new MockPollingComponent(TimeSpan.FromMilliseconds(1), null, true);
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71 var signal = new Signal();
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72 var promise = new Promise();
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73
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74 // timer should tick once
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75 comp.MockTick = ct => {
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76 signal.Set();
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77 return promise;
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78 };
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79
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80 // start timer
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81 comp.Start().Join(1000);
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82
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83 signal.Wait(); // wait for tick
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84
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85 // try to stop component
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86 var stopping = comp.Stop();
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87
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88 Assert.AreEqual(ExecutionState.Stopping, comp.State);
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89 ShouldThrow(() => stopping.Join(100));
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90 Assert.AreEqual(ExecutionState.Stopping, comp.State);
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91
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92 // complete operation
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93 promise.Resolve();
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94
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95 // the component should stop normally
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96 stopping.Join(1000);
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97
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98 Assert.AreEqual(ExecutionState.Disposed, comp.State);
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99 }
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100
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101 [TestMethod]
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102 public void ShouldRecoverAfterTickError() {
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103 var ticks = 0;
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104
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105 var comp = new MockPollingComponent(TimeSpan.FromMilliseconds(1), null, true);
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106 var signal = new Signal(); // will signal when timer fires 10 times
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107
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108 comp.MockTick = ct => {
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109 ticks++;
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110 if (ticks == 10)
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111 signal.Set();
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112 // each time handler dies
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113 throw new Exception("tainted handler");
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114 };
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115
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116 comp.Start();
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117
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118 signal.Wait(1000);
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119
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120 comp.Stop().Join(1000);
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121
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122 Assert.AreEqual(ExecutionState.Disposed, comp.State);
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123 }
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124
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125 [TestMethod]
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126 public void StopCancelHandlerOnStop() {
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127 var comp = new MockPollingComponent(TimeSpan.FromMilliseconds(1), null, true);
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128 var started = new Signal();
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129 bool cancelled = false;
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130
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131 // timer should tick once
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132 comp.MockTick = ct => {
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133 started.Set();
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134
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135 while(!ct.IsCancellationRequested) {
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136 Thread.Sleep(1);
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137 }
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138
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139 cancelled = true;
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140
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141 throw new OperationCanceledException();
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142 };
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143
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144 // start timer
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145 comp.Start().Join(1000);
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146
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147 started.Wait(); // wait for tick
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148
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149 // try to stop component
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150 comp.Stop().Join(1000);
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151
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152 Assert.AreEqual(true, cancelled);
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153
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154 Assert.AreEqual(ExecutionState.Disposed, comp.State);
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155 }
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156
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157 [TestMethod]
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158 public void FailTickOnStopShouldBeIgnored() {
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159 var comp = new MockPollingComponent(TimeSpan.FromMilliseconds(1), null, true);
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160 var started = new Signal();
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161 var finish = new Signal();
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162
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163 // timer should tick once
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164 comp.MockTick = ct => {
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165 started.Set();
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166 finish.Wait();
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167 // component is in stopping state here
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168 throw new Exception("Die, die, die!!!");
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169 };
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170
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171
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172 comp.MockOnError = comp.CallComponentFail;
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173
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174 // start timer
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175 comp.Start().Join(1000);
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176
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177 started.Wait(); // wait for tick
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178
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179 // try to stop component
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180 var stopping = comp.Stop();
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181
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182 // the component is in stopping state but it is waiting for the tick handler to complete
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183 finish.Set(); // signal the tick handler to finish
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184
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185 // tick handler should stop rather soon
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186 stopping.Join(1000);
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187
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188 // validate the component is disposed
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189 Assert.AreEqual(ExecutionState.Disposed, comp.State);
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190 }
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191
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192 [TestMethod]
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193 public void FailTickShouldFailComponent() {
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194 var comp = new MockPollingComponent(TimeSpan.FromMilliseconds(1), null, true);
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195 var started = new Signal();
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196 var finish = new Signal();
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197
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198 // timer should tick once
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199 comp.MockTick = ct => {
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200 started.Set();
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201 throw new Exception("Die, die, die!!!");
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202 };
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203
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204
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205 comp.MockOnError = err => {
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206 comp.CallComponentFail(err);
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207 finish.Set();
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208 };
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209
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210 // start timer
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211 comp.Start().Join(1000);
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212
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213 started.Wait(); // wait for tick
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214
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215 finish.Wait();
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216
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217 // try to stop component
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218 ShouldThrow(() => comp.Stop());
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219
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220 Assert.AreEqual(ExecutionState.Failed, comp.State);
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221 Assert.IsNotNull(comp.LastError);
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222 Assert.AreEqual("Die, die, die!!!", comp.LastError.Message);
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223
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224 comp.Dispose();
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225 Assert.AreEqual(ExecutionState.Disposed, comp.State);
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226 }
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227
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228 }
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229 }
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230