public void AsyncReactiveSubjectBase_SubscribeAsync()
{
var s = new MyAsyncReactiveSubject <int>();
var iv2 = default(IAsyncReactiveObserver <int>);
var uri2 = default(Uri);
var state2 = default(object);
s.SubscribeImpl = async(o, u, x, ct) =>
{
iv2 = o;
uri2 = u;
state2 = x;
await Task.Yield();
return(null);
};
var iv = new MyObserver <int>();
var uri = new Uri("foo://bar");
var state = "qux";
s.SubscribeAsync(iv, uri, state, CancellationToken.None).Wait();
Assert.AreSame(iv, iv2);
Assert.AreSame(uri, uri2);
Assert.AreSame(state, state2);
}
public void AsyncReactiveObservableBase_Subscribe()
{
var s = new MyAsyncReactiveObservable <int>();
var iv2 = default(IAsyncReactiveObserver <int>);
var uri2 = default(Uri);
var state2 = default(object);
s.SubscribeAsyncImpl = (o, u, x, token) =>
{
iv2 = o;
uri2 = u;
state2 = x;
return(Task.FromResult <IAsyncReactiveSubscription>(null));
};
var iv = new MyObserver <int>();
var uri = new Uri("foo://bar");
var state = "qux";
_ = s.SubscribeAsync(iv, uri, state).Result;
Assert.AreSame(iv, iv2);
Assert.AreSame(uri, uri2);
Assert.AreSame(state, state2);
}
public void ReactiveObservableBase_Subscribe()
{
var s = new MyReactiveObservable <int>();
var iv2 = default(IReactiveObserver <int>);
var uri2 = default(Uri);
var state2 = default(object);
s.SubscribeImpl = (o, u, x) =>
{
iv2 = o;
uri2 = u;
state2 = x;
return(null);
};
var iv = new MyObserver <int>();
var uri = new Uri("foo://bar");
var state = "qux";
s.Subscribe(iv, uri, state);
Assert.AreSame(iv, iv2);
Assert.AreSame(uri, uri2);
Assert.AreSame(state, state2);
}
public void AsObserver_Hides()
{
var obs = new MyObserver();
var res = obs.AsObserver();
Assert.IsFalse(object.ReferenceEquals(obs, res));
}
public void TestSpecialInterfaces()
{
var specialPerson = new SpecialPerson();
var myObserver = new MyObserver();
IDisposable subscription = specialPerson.Subscribe(myObserver);
specialPerson.FallIll();
}
public void Do4()
{
var obs = new MyObserver();
Enumerable.Range(0, 10).Do(obs).ForEach(_ => { });
Assert.IsTrue(obs.Done);
Assert.AreEqual(45, obs.Sum);
}
private static void Qbserver_ReentrancyDuringInitialization_Impl(Func <IAsyncReactiveQbserver <int>, Task> action, Func <MyObserver <int>, TaskCompletionSource <object> > complete, Action <MyObserver <int> > assert)
{
var provider = new MyProvider();
var observer = provider.CreateQbserver <int>(Expression.Default(typeof(IAsyncReactiveQbserver <int>)));
var opAsync = action(observer);
provider.Acquire.WaitOne();
AssertEx.ThrowsException <AggregateException>(
() =>
{
observer.OnNextAsync(43, CancellationToken.None).Wait();
},
ex =>
{
var ioe = ex.InnerException as InvalidOperationException;
Assert.IsNotNull(ioe);
Assert.IsTrue(ioe.Message.Contains("Concurrent calls"));
});
AssertEx.ThrowsException <AggregateException>(
() =>
{
observer.OnErrorAsync(new Exception(), CancellationToken.None).Wait();
},
ex =>
{
var ioe = ex.InnerException as InvalidOperationException;
Assert.IsNotNull(ioe);
Assert.IsTrue(ioe.Message.Contains("Concurrent calls"));
});
AssertEx.ThrowsException <AggregateException>(
() =>
{
observer.OnCompletedAsync(CancellationToken.None).Wait();
},
ex =>
{
var ioe = ex.InnerException as InvalidOperationException;
Assert.IsNotNull(ioe);
Assert.IsTrue(ioe.Message.Contains("Concurrent calls"));
});
var iv = new MyObserver <int>();
var tcs = provider.GetObserverAsyncCoreTask;
tcs.SetResult(iv);
complete(iv).SetResult(null);
opAsync.Wait();
assert(iv);
}
public void IObservable_Subscribe()
{
// Arrange
var observable = new MyObservable();
var observer = new MyObserver();
// Act
observable.Subscribe(observer);
// Assert
}
public void ReactiveObservableBase_Subscribe_ArgumentChecking()
{
var s = new MyReactiveObservable <int>();
var iv = new MyObserver <int>();
var uri = new Uri("foo://bar");
var state = "qux";
Assert.ThrowsException <ArgumentNullException>(() => s.Subscribe(null, uri, state));
Assert.ThrowsException <ArgumentNullException>(() => s.Subscribe(iv, null, state));
}
public void AsyncReactiveSubjectBase_SubscribeAsync_ArgumentChecking()
{
var s = new MyAsyncReactiveSubject <int>();
var iv = new MyObserver <int>();
var uri = new Uri("foo://bar");
var state = "qux";
Assert.ThrowsException <ArgumentNullException>(() => s.SubscribeAsync(null, uri, state, CancellationToken.None));
Assert.ThrowsException <ArgumentNullException>(() => s.SubscribeAsync(iv, null, state, CancellationToken.None));
}
public void StatefulObserver_Basics()
{
{
var mo = new MyObserver();
mo.Start();
Assert.IsTrue(mo.Started);
//Assert.IsFalse(mo.StateChanged); // TODO: Hmm, can we do this?
mo.OnNext(42);
mo.OnNext(43);
mo.OnCompleted();
Assert.IsTrue(new[] { 42, 43 }.SequenceEqual(mo.Values));
Assert.IsTrue(mo.Done);
mo.Dispose();
Assert.IsTrue(mo.Disposed);
mo.Dispose();
Assert.IsTrue(mo.Disposed);
}
{
var mo = new MyObserver();
mo.Start();
Assert.IsTrue(mo.Started);
//Assert.IsFalse(mo.StateChanged); // TODO: Hmm, can we do this?
var ex = new Exception();
mo.OnNext(42);
mo.OnNext(43);
mo.OnError(ex);
Assert.IsTrue(new[] { 42, 43 }.SequenceEqual(mo.Values));
Assert.AreSame(ex, mo.Error);
mo.Dispose();
Assert.IsTrue(mo.Disposed);
mo.Dispose();
Assert.IsTrue(mo.Disposed);
}
}
public void ToNotifier_Forwards()
{
var obsn = new MyObserver();
obsn.ToNotifier()(Notification.CreateOnNext <int>(42));
Assert.Equal(obsn.HasOnNext, 42);
var ex = new Exception();
var obse = new MyObserver();
obse.ToNotifier()(Notification.CreateOnError <int>(ex));
Assert.Same(ex, obse.HasOnError);
var obsc = new MyObserver();
obsc.ToNotifier()(Notification.CreateOnCompleted <int>());
Assert.True(obsc.HasOnCompleted);
}
public void ToNotifier_Forwards()
{
var obsn = new MyObserver();
obsn.ToNotifier()(new Notification <int> .OnNext(42));
Assert.AreEqual(obsn.HasOnNext, 42);
var ex = new Exception();
var obse = new MyObserver();
obse.ToNotifier()(new Notification <int> .OnError(ex));
Assert.AreSame(ex, obse.HasOnError);
var obsc = new MyObserver();
obsc.ToNotifier()(new Notification <int> .OnCompleted());
Assert.IsTrue(obsc.HasOnCompleted);
}
public void AsObserver_Forwards()
{
var obsn = new MyObserver();
obsn.AsObserver().OnNext(42);
Assert.AreEqual(obsn.HasOnNext, 42);
var ex = new Exception();
var obse = new MyObserver();
obse.AsObserver().OnError(ex);
Assert.AreSame(ex, obse.HasOnError);
var obsc = new MyObserver();
obsc.AsObserver().OnCompleted();
Assert.IsTrue(obsc.HasOnCompleted);
}
public void test_observer_notify()
{
MySubject subject = new MySubject();
MyObserver[] observers = new MyObserver[] { new MyObserver(), new MyObserver() };
foreach (MyObserver o in observers)
{
subject.attach(o);
}
subject.notify();
foreach (MyObserver o in observers)
{
Assert.IsTrue(o.hasBeenNotified);
}
}
public static void Test4()
{
var id = Thread.CurrentThread.ManagedThreadId.ToString();
Console.WriteLine($"Thread id = {id}");
IObservable <int> input = Observable.Range(1, 15);
input.Where(i => i % 2 == 0).Subscribe(Console.Write);
var ob = new MyObserver <int>();
var subscripttion = input.Subscribe(ob);
var observable = new MyRangeObservable(5, 8);
var subscription2 = observable.Subscribe(ob);
subscripttion.Dispose();
subscription2.Dispose();
}
public void Qbserver_RegularFlow()
{
var provider = new MyProvider();
var observer = provider.CreateQbserver <int>(Expression.Default(typeof(IAsyncReactiveQbserver <int>)));
var iv = new MyObserver <int>();
provider.GetObserverAsyncCoreTask.SetResult(iv);
iv.OnNextTask.SetResult(null);
observer.OnNextAsync(42, CancellationToken.None).Wait();
observer.OnNextAsync(43, CancellationToken.None).Wait();
observer.OnNextAsync(44, CancellationToken.None).Wait();
iv.OnCompletedTask.SetResult(null);
observer.OnCompletedAsync(CancellationToken.None).Wait();
Assert.IsTrue(iv.OnNextLog.SequenceEqual(new[] { 42, 43, 44 }));
Assert.IsTrue(iv.OnCompletedLog);
}
public void Should_allow_rx_subscribers()
{
var observer = new MyObserver <A>();
using (var bus = ServiceBusFactory.New(x =>
{
x.ReceiveFrom("loopback://localhost/queue");
x.Subscribe(s =>
{
s.Observe(observer);
s.Observe(Observer.Create <A>(m => Console.WriteLine(m.Name)));
});
}))
{
bus.Publish(new A {
Name = "Joe"
});
observer.Value.Wait(8.Seconds()).ShouldBeTrue();
}
}
public void StatefulObserver_Versioning_NotSupportedByDefault()
{
var state = new MockOperatorStateContainer();
var writerFactory = state.CreateWriter();
var readerFactory = state.CreateReader();
var mo = new MyObserver()
{
State = 42
};
mo.Start();
var writer = writerFactory.Create(mo);
Assert.ThrowsException <NotSupportedException>(() => mo.SaveState(writer, new Version(2, 0, 0, 0)));
var mor = new MyObserver();
var reader = readerFactory.Create(mor);
Assert.ThrowsException <NotSupportedException>(() => mor.LoadState(reader, new Version(2, 0, 0, 0)));
}
static void Main(string[] args)
{
var query = from n in Enumerable.Range(1, 5) select n;
#region Without Rx
//foreach (var item in query)
//{
// Console.WriteLine(item);
//}
//IAmDone(); // inform external function about completion of processing
#endregion
#region With Rx
// Implementation using Observable
//Console.WriteLine("UI Thread Id : " + Thread.CurrentThread.ManagedThreadId);
//var observableQuery2 = query.ToObservable();
//observableQuery2.Subscribe(DisplayNumber, IAmDone); // first function will run for each result in the observable query, second function will run at the end
#endregion
#region With Rx and Threading
//Console.WriteLine("Threading Example");
//Console.WriteLine("UI Thread Id : " + Thread.CurrentThread.ManagedThreadId);
//var observableQuery3 = query.ToObservable(NewThreadScheduler.Default); // Produces value on a diff thread than UI thread
//observableQuery3.Subscribe(DisplayNumber, IAmDone);
#endregion
#region With Rx and Observer Pattern
Console.WriteLine("With Observer Pattern");
Console.WriteLine("UI Thread Id : " + Thread.CurrentThread.ManagedThreadId);
var observableQuery4 = query.ToObservable(NewThreadScheduler.Default);
var observer = Observer.Create <int>(DisplayNumber); // observer creation
observableQuery4.Subscribe(observer); // observer subscribing to observarble query aka subject
#endregion
#region With RX - Completion function
Console.WriteLine("With RX - Completion function");
var newQuery = from n in Enumerable.Range(1, 25) select n.ToString();
var newObservableQuery = newQuery.ToObservable();
newObservableQuery.Subscribe(n =>
{
Console.WriteLine(string.Format("{0}", SlowString(n)));
}, IAmDone);
#endregion
#region Custom Observer
Console.WriteLine("Custom Observer");
var numbers = new List <int> {
1, 2, 3
}.ToObservable();
var myObserver = new MyObserver();
numbers.Subscribe(myObserver);
#endregion
Console.ReadLine();
}
public void AddObserver(MyObserver observer)
{
observers.Add(observer);
}
public void StatefulObserver_State()
{
var state = new MockOperatorStateContainer();
var writerFactory = state.CreateWriter();
var readerFactory = state.CreateReader();
var mo = new MyObserver()
{
State = 42
};
mo.Start();
Assert.IsTrue(mo.Started);
Assert.IsTrue(mo.StateChanged);
Assert.ThrowsException <ArgumentNullException>(() => mo.SaveState(null, mo.Version));
var writer = writerFactory.Create(mo);
mo.SaveState(writer, mo.Version);
Assert.IsTrue(mo.StateChanged);
mo.OnStateSaved();
Assert.IsFalse(mo.StateChanged);
var mor = new MyObserver();
var reader = readerFactory.Create(mor);
Assert.ThrowsException <ArgumentNullException>(() => mor.LoadState(null, mor.Version));
mor.LoadState(reader, mor.Version);
mor.Start();
Assert.IsTrue(mor.Started);
Assert.AreEqual(42, mor.State);
mo.State = 43;
Assert.IsTrue(mo.StateChanged);
writer = writerFactory.Create(mo);
mo.SaveState(writer, mo.Version);
mo.OnStateSaved();
Assert.IsFalse(mo.StateChanged);
var moq = new MyObserver();
reader = readerFactory.Create(moq);
moq.LoadState(reader, moq.Version);
moq.Start();
Assert.IsTrue(moq.Started);
Assert.AreEqual(43, moq.State);
mo.Dispose();
Assert.IsTrue(mo.Disposed);
writer = writerFactory.Create(mo);
mo.SaveState(writer, mo.Version);
mo.OnStateSaved();
var mop = new MyObserver();
reader = readerFactory.Create(mop);
mop.LoadState(reader, mop.Version);
mop.Start();
Assert.IsTrue(mop.Disposed);
Assert.IsFalse(mop.Started);
}
public void RemoveObserver(MyObserver observer)
{
observers.Remove(observer);
}
public static void SubscribeService(MyObserver <T> observer)
{
m_Observers.Add(observer);
observer.Update(m_Service);
}
