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Decoupled Messaging
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using Microsoft.VisualStudio.TestTools.UnitTesting; | |
using System; | |
using System.Reactive.Subjects; | |
using System.Threading.Tasks; | |
namespace DecoupledMessaging | |
{ | |
[TestClass] | |
public class UnitTest1 | |
{ | |
[TestMethod] | |
public async Task TestMethod1() | |
{ | |
var temperatureDisplayer = new TemperatureDisplayer1(); | |
using (var temperaturePublisher = new TemperaturePublisher(temperatureDisplayer.DisplayTemperature)) | |
{ | |
await Task.Delay(5000); | |
} | |
} | |
[TestMethod] | |
public async Task TestMethod2() | |
{ | |
var temperatureDisplayer = new TemperatureDisplayer2(); | |
using (var temperaturePublisher = new TemperaturePublisher(temperatureDisplayer.OnNext)) | |
{ | |
await Task.Delay(5000); | |
} | |
} | |
[TestMethod] | |
public async Task TestMethod3() | |
{ | |
var subject = new Subject<double>(); | |
using (var temperatureDisplayer = new TemperatureDisplayer3(subject)) | |
{ | |
using (var temperaturePublisher = new TemperaturePublisher(subject.OnNext)) | |
{ | |
await Task.Delay(5000); | |
} | |
} | |
} | |
} | |
public delegate void SendTemperature(double temperature); | |
public class TemperaturePublisher : IDisposable | |
{ | |
private SendTemperature _sendTemperature; | |
private bool _isRunning = true; | |
public TemperaturePublisher(SendTemperature sendTemperature) | |
{ | |
_sendTemperature = sendTemperature; | |
Start(); | |
} | |
private void Start() | |
{ | |
Task.Run(async () => | |
{ | |
while (_isRunning) | |
{ | |
_sendTemperature(new Random().NextDouble() * 45); | |
await Task.Delay(1000); | |
} | |
}); | |
} | |
public void Dispose() | |
{ | |
_isRunning = false; | |
_sendTemperature = null; | |
} | |
} | |
public class TemperatureDisplayer1 | |
{ | |
public void DisplayTemperature(double temperature) | |
{ | |
Console.WriteLine(temperature); | |
} | |
} | |
public class TemperatureDisplayer2 : IObserver<double> | |
{ | |
public void OnCompleted() | |
{ | |
} | |
public void OnError(Exception error) | |
{ | |
} | |
public void OnNext(double temperature) | |
{ | |
Console.WriteLine(temperature); | |
} | |
} | |
public class TemperatureDisplayer3 : IDisposable | |
{ | |
private IDisposable _subscription; | |
public TemperatureDisplayer3(IObservable<double> observable) | |
{ | |
_subscription = observable.Subscribe((temperature) => | |
{ | |
Console.WriteLine(temperature); | |
}); | |
} | |
public void Dispose() | |
{ | |
_subscription.Dispose(); | |
} | |
} | |
} |
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