public void interval_is_cancelled_on_completion()
{
var subject = new Subject<int>();
var stats = new StatsObserver<int>();
var scheduler = new ManualScheduler();
subject
.Sample(TimeSpan.FromSeconds(1), scheduler)
.Subscribe(stats);
subject.OnNext(0);
subject.OnCompleted();
scheduler.RunNext();
Assert.AreEqual(0, scheduler.QueueSize);
}
public void each_subscriber_is_scheduled_individually()
{
ManualScheduler scheduler = new ManualScheduler();
AsyncSubject<int> subject = new AsyncSubject<int>(scheduler);
StatsObserver<int> statsA = new StatsObserver<int>();
StatsObserver<int> statsB = new StatsObserver<int>();
subject.OnNext(1);
subject.OnNext(2);
subject.OnNext(3);
subject.OnCompleted();
subject.Subscribe(statsA);
subject.Subscribe(statsB);
scheduler.RunNext();
Assert.IsTrue(statsA.NextCalled);
Assert.IsFalse(statsB.NextCalled);
scheduler.RunNext();
Assert.IsTrue(statsB.NextCalled);
}
public void scheduler_used_to_subscribe_to_each_sequence()
{
var stats = new StatsObserver<int>();
var scheduler = new ManualScheduler();
var subjectA = new StatsSubject<int>();
var subjectB = new StatsSubject<int>();
var subjectC = new StatsSubject<int>();
Observable.Merge(
scheduler,
subjectA,
subjectB,
subjectC
)
.Subscribe(stats);
Assert.AreEqual(1, scheduler.QueueSize);
scheduler.RunNext();
Assert.IsTrue(subjectA.HasSubscriptions);
Assert.IsFalse(subjectB.HasSubscriptions);
Assert.AreEqual(1, scheduler.QueueSize);
scheduler.RunNext();
Assert.IsTrue(subjectB.HasSubscriptions);
Assert.IsFalse(subjectC.HasSubscriptions);
Assert.AreEqual(1, scheduler.QueueSize);
scheduler.RunNext();
Assert.IsTrue(subjectC.HasSubscriptions);
Assert.AreEqual(1, scheduler.QueueSize);
scheduler.RunNext();
Assert.AreEqual(0, scheduler.QueueSize);
}
public void completion_occurs_after_interval()
{
var scheduler = new ManualScheduler();
var stats = new StatsObserver<int>();
Observable.Empty<int>()
.Sample(TimeSpan.FromSeconds(1), scheduler)
.Subscribe(stats);
Assert.IsFalse(stats.CompletedCalled);
scheduler.RunNext();
Assert.IsTrue(stats.CompletedCalled);
}
public void next_and_complete_are_scheduled_separately()
{
ManualScheduler scheduler = new ManualScheduler();
AsyncSubject<int> subject = new AsyncSubject<int>(scheduler);
StatsObserver<int> statsA = new StatsObserver<int>();
subject.OnNext(1);
subject.OnNext(2);
subject.OnNext(3);
subject.OnCompleted();
subject.Subscribe(statsA);
Assert.AreEqual(1, scheduler.QueueSize);
scheduler.RunNext();
Assert.IsTrue(statsA.NextCalled);
Assert.IsFalse(statsA.CompletedCalled);
Assert.AreEqual(1, scheduler.QueueSize);
scheduler.RunNext();
Assert.IsTrue(statsA.CompletedCalled);
}
public void errors_are_sent_through_scheduler()
{
ManualScheduler scheduler = new ManualScheduler();
ReplaySubject<int> subject = new ReplaySubject<int>(scheduler);
StatsObserver<int> stats = new StatsObserver<int>();
subject.OnError(new Exception());
subject.Subscribe(stats);
Assert.IsFalse(stats.ErrorCalled);
scheduler.RunNext();
Assert.IsTrue(stats.ErrorCalled);
}
public void default_value_is_sent_through_scheduler()
{
ManualScheduler scheduler = new ManualScheduler();
BehaviorSubject<int> subject = new BehaviorSubject<int>(0, scheduler);
StatsObserver<int> stats = new StatsObserver<int>();
subject.Subscribe(stats);
Assert.IsFalse(stats.NextCalled);
scheduler.RunNext();
Assert.AreEqual(1, stats.NextCount);
Assert.IsTrue(stats.NextValues.SequenceEqual(new int[] { 0 }));
Assert.IsFalse(stats.CompletedCalled);
}
public void complete_is_sent_through_scheduler()
{
ManualScheduler scheduler = new ManualScheduler();
BehaviorSubject<int> subject = new BehaviorSubject<int>(0, scheduler);
StatsObserver<int> stats = new StatsObserver<int>();
subject.OnCompleted();
subject.Subscribe(stats);
Assert.IsFalse(stats.NextCalled);
scheduler.RunNext();
Assert.AreEqual(0, stats.NextCount);
Assert.IsTrue(stats.CompletedCalled);
}
public void scheduler_is_used_to_distribute_values()
{
ManualScheduler scheduler = new ManualScheduler();
AsyncSubject<int> subject = new AsyncSubject<int>(scheduler);
StatsObserver<int> statsA = new StatsObserver<int>();
subject.OnNext(1);
subject.OnNext(2);
subject.OnNext(3);
subject.OnCompleted();
subject.Subscribe(statsA);
Assert.IsFalse(statsA.NextCalled);
scheduler.RunNext();
Assert.IsTrue(statsA.NextCalled);
}
public void scheduler_is_not_used_to_sent_complete()
{
Subject<int> subject = new Subject<int>();
var scheduler = new ManualScheduler();
var stats = new StatsObserver<int>();
var obs = subject.Prune(scheduler);
var connection = obs.Connect();
subject.OnNext(1);
subject.OnCompleted();
obs.Subscribe(stats);
scheduler.RunNext(); // only run one
Assert.IsTrue(stats.NextCalled);
scheduler.RunNext(); // only run one
Assert.IsTrue(stats.CompletedCalled); // complete is called anyway
}
public void values_cannot_be_replayed_out_of_order()
{
ManualScheduler scheduler = new ManualScheduler();
ReplaySubject<int> subject = new ReplaySubject<int>(scheduler);
StatsObserver<int> stats = new StatsObserver<int>();
subject.OnNext(1);
subject.OnNext(2);
subject.Subscribe(stats);
Assert.IsFalse(stats.NextCalled);
scheduler.RunNext();
Assert.IsTrue(stats.NextValues.SequenceEqual(new int[] { 1 }));
subject.OnNext(3);
scheduler.RunNext();
Assert.IsTrue(stats.NextValues.SequenceEqual(new int[] { 1, 2 }));
scheduler.RunNext();
Assert.IsTrue(stats.NextValues.SequenceEqual(new int[] { 1, 2, 3 }));
subject.OnCompleted();
scheduler.RunNext();
Assert.IsTrue(stats.CompletedCalled);
}
public void replayed_values_are_sent_through_scheduler()
{
ManualScheduler scheduler = new ManualScheduler();
ReplaySubject<int> subject = new ReplaySubject<int>(scheduler);
StatsObserver<int> stats = new StatsObserver<int>();
subject.OnNext(1);
subject.OnNext(2);
subject.OnCompleted();
subject.Subscribe(stats);
Assert.IsFalse(stats.NextCalled);
scheduler.RunNext();
Assert.AreEqual(1, stats.NextCount);
Assert.IsTrue(stats.NextValues.SequenceEqual(new int[] { 1 }));
Assert.IsFalse(stats.CompletedCalled);
scheduler.RunNext();
Assert.AreEqual(2, stats.NextCount);
Assert.IsTrue(stats.NextValues.SequenceEqual(new int[] { 1, 2 }));
Assert.IsFalse(stats.CompletedCalled);
scheduler.RunNext();
Assert.IsTrue(stats.CompletedCalled);
}
public void uses_scheduler_to_schedule_samples()
{
var subject = new Subject<int>();
var stats = new StatsObserver<int>();
var scheduler = new ManualScheduler();
subject
.Sample(TimeSpan.FromSeconds(1), scheduler)
.Subscribe(stats);
Assert.AreEqual(1, scheduler.QueueSize);
subject.OnNext(0);
scheduler.RunNext();
Assert.AreEqual(1, scheduler.QueueSize);
Assert.AreEqual(1, stats.NextCount);
Assert.AreEqual(0, stats.NextValues[0]);
}
public void no_value_is_emitted_if_sampled_value_hasnt_changed()
{
var subject = new Subject<int>();
var stats = new StatsObserver<int>();
var scheduler = new ManualScheduler();
subject
.Sample(TimeSpan.FromSeconds(1), scheduler)
.Subscribe(stats);
stats.OnNext(0);
scheduler.RunNext();
scheduler.RunNext();
Assert.AreEqual(1, stats.NextCount);
}
public void last_value_is_taken_for_each_sample()
{
var subject = new Subject<int>();
var stats = new StatsObserver<int>();
var scheduler = new ManualScheduler();
subject
.Sample(TimeSpan.FromSeconds(1), scheduler)
.Subscribe(stats);
subject.OnNext(0);
subject.OnNext(1);
scheduler.RunNext();
subject.OnNext(2);
subject.OnNext(3);
scheduler.RunNext();
Assert.AreEqual(2, stats.NextCount);
Assert.AreEqual(1, stats.NextValues[0]);
Assert.AreEqual(3, stats.NextValues[1]);
}