public async Task Given_subscribed_When_unsubscribing_async_It_should_not_get_any_further_messages()
{
var subject = Context.GenerateSubject();
_sync = Sync.MaxOne();
_client = await Context.ConnectClientAsync();
var s = _client.Sub(subject, stream => stream.Subscribe(NatsObserver.Delegating <MsgOp>(msg => _sync.Release(msg))));
await Context.DelayAsync();
await _client.PubAsync(subject, "Test1");
_sync.WaitForAny();
await _client.PubAsync(subject, "Test2");
_sync.WaitForAny();
await _client.UnsubAsync(s.SubscriptionInfo);
await _client.PubAsync(subject, "Test3");
await Context.DelayAsync();
_sync.InterceptedCount.Should().Be(2);
}
public void Emitting_non_MsgOp_Should_continue_Emitting_When_using_observer_with_error_handler_but_failing_observer_gets_discarded()
{
var countA = 0;
var countB = 0;
var countC = 0;
var exToThrow = new Exception(Guid.NewGuid().ToString());
Exception caughtEx = null;
UnitUnderTest.AllOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op =>
{
if (countA == 0)
{
countA += 1;
throw exToThrow;
}
countA += 1;
}, ex => caughtEx = ex));
UnitUnderTest.AllOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => countB += 1));
UnitUnderTest.AllOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => countC += 1));
UnitUnderTest.Emit(PingOp.Instance);
UnitUnderTest.Emit(PingOp.Instance);
caughtEx.Should().BeNull();
countA.Should().Be(1);
countB.Should().Be(2);
countC.Should().Be(2);
}
public async Task Given_subscribed_async_using_observer_When_the_subscription_has_been_disposed_It_should_not_get_messages()
{
var subject = Context.GenerateSubject();
_sync = Sync.MaxOne();
_client = await Context.ConnectClientAsync();
var s = await _client.SubAsync(subject, stream => stream.Subscribe(NatsObserver.Delegating <MsgOp>(msg => _sync.Release(msg))));
await Context.DelayAsync();
await _client.PubAsync(subject, "Test1");
_sync.WaitForAny();
await _client.PubAsync(subject, "Test2");
_sync.WaitForAny();
s.Dispose();
await _client.PubAsync(subject, "Test3");
await Context.DelayAsync();
_sync.InterceptedCount.Should().Be(2);
}
public void Emitting_MsgOp_Should_continue_Emitting_When_using_observer_without_error_handler_but_failing_observer_gets_discarded()
{
var msgOp = MsgOp.CreateMsg("TestSubject", "60a152d4b5804b23abe088eeac63b55e", ReadOnlySpan <char> .Empty, new byte[0]);
var countA = 0;
var countB = 0;
var countC = 0;
UnitUnderTest.MsgOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op =>
{
if (countA == 0)
{
countA += 1;
throw new Exception("Fail");
}
countA += 1;
}));
UnitUnderTest.MsgOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => countB += 1));
UnitUnderTest.MsgOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => countC += 1));
UnitUnderTest.Emit(msgOp);
UnitUnderTest.Emit(msgOp);
countA.Should().Be(1);
countB.Should().Be(2);
countC.Should().Be(2);
}
public void Emitting_MsgOp_Should_continue_Emitting_When_using_observer_with_error_handler_but_failing_observer_gets_discarded()
{
var msgOp = MsgOp.CreateMsg("TestSubject", "f0dd86b9c2804632919b7b78292435e6", ReadOnlySpan <char> .Empty, new byte[0]);
var countA = 0;
var countB = 0;
var countC = 0;
var exToThrow = new Exception(Guid.NewGuid().ToString());
Exception caughtEx = null;
UnitUnderTest.MsgOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op =>
{
if (countA == 0)
{
countA += 1;
throw exToThrow;
}
countA += 1;
}, ex => caughtEx = ex));
UnitUnderTest.MsgOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => countB += 1));
UnitUnderTest.MsgOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => countC += 1));
UnitUnderTest.Emit(msgOp);
UnitUnderTest.Emit(msgOp);
caughtEx.Should().BeNull();
countA.Should().Be(1);
countB.Should().Be(2);
countC.Should().Be(2);
}
public void Emitting_non_MsgOp_Should_continue_Emitting_When_using_observer_without_error_handler_but_failing_observer_gets_discarded()
{
var countA = 0;
var countB = 0;
var countC = 0;
UnitUnderTest.AllOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op =>
{
if (countA == 0)
{
countA += 1;
throw new Exception("Fail");
}
countA += 1;
}));
UnitUnderTest.AllOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => countB += 1));
UnitUnderTest.AllOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => countC += 1));
UnitUnderTest.Emit(PingOp.Instance);
UnitUnderTest.Emit(PingOp.Instance);
countA.Should().Be(1);
countB.Should().Be(2);
countC.Should().Be(2);
}
public async Task Given_subscribed_When_unsubscribing_async_It_should_not_get_any_further_messages()
{
var subject = GenerateSubject();
var interceptCount = 0;
var subscription = _client.Sub(subject, stream => stream.Subscribe(NatsObserver.Delegating <MsgOp>(msg =>
{
Interlocked.Increment(ref interceptCount);
ReleaseOne();
})));
await _client.PubAsync(subject, "Test1");
WaitOne();
await _client.PubAsync(subject, "Test2");
WaitOne();
await _client.UnsubAsync(subscription.SubscriptionInfo);
await _client.PubAsync(subject, "Test3");
WaitOne();
interceptCount.Should().Be(2);
}
public async Task Given_subscribed_async_using_observer_When_the_subscription_has_been_disposed_It_should_not_get_messages()
{
var subject = GenerateSubject();
var interceptCount = 0;
var s = await _client.SubAsync(subject, stream => stream.Subscribe(NatsObserver.Delegating <MsgOp>(msg =>
{
Interlocked.Increment(ref interceptCount);
ReleaseOne();
})));
await _client.PubAsync(subject, "Test1");
WaitOne();
await _client.PubAsync(subject, "Test2");
WaitOne();
s.Dispose();
await _client.PubAsync(subject, "Test3");
WaitOne();
interceptCount.Should().Be(2);
}
public void Emitting_non_MsgOp_Should_not_dispatch_to_MsgOpsStream_but_AllOpsStream()
{
var opStreamRec = false;
var msgOpStreamRec = false;
UnitUnderTest.AllOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => opStreamRec = true));
UnitUnderTest.MsgOpsStream.Subscribe(NatsObserver.Delegating <MsgOp>(op => msgOpStreamRec = true));
UnitUnderTest.Emit(PingOp.Instance);
opStreamRec.Should().BeTrue();
msgOpStreamRec.Should().BeFalse();
}
public void Emitting_MsgOp_Should_dispatch_to_both_AllOpsStream_and_MsgOpsStream()
{
var msgOp = MsgOp.CreateMsg("TestSubject", "0a3282e769e34677809db5d756dfd768", ReadOnlySpan <char> .Empty, new byte[0]);
var opStreamRec = false;
var msgOpStreamRec = false;
UnitUnderTest.AllOpsStream.Subscribe(NatsObserver.Delegating <IOp>(op => opStreamRec = true));
UnitUnderTest.MsgOpsStream.Subscribe(NatsObserver.Delegating <MsgOp>(op => msgOpStreamRec = true));
UnitUnderTest.Emit(msgOp);
opStreamRec.Should().BeTrue();
msgOpStreamRec.Should().BeTrue();
}
public async Task Given_subscribed_When_disconnectiong_and_connecting_again_It_should_resubscribe_and_get_messages()
{
var subject = GenerateSubject();
var interceptCount = 0;
_client.Sub(subject, stream => stream.Subscribe(NatsObserver.Delegating <MsgOp>(msg =>
{
Interlocked.Increment(ref interceptCount);
ReleaseOne();
})));
await _client.PubAsync(subject, "Test1");
WaitOne();
_client.Disconnect();
_client.Connect();
await _client.PubAsync(subject, "Test2");
WaitOne();
interceptCount.Should().Be(2);
}
public async Task Given_subscribed_with_wildcard_async_using_observer_It_should_get_messages()
{
const string subjectNs = "foo.tests.";
_sync = Sync.MaxOne();
_client = await Context.ConnectClientAsync();
await _client.SubAsync(subjectNs + "*", stream => stream.Subscribe(NatsObserver.Delegating <MsgOp>(msg => _sync.Release(msg))));
await Context.DelayAsync();
await _client.PubAsync(subjectNs + "type1", "Test1");
_sync.WaitForAny();
await _client.PubAsync(subjectNs + "type2", "Test2");
_sync.WaitForAny();
await _client.PubAsync(subjectNs + "type3", "Test3");
_sync.WaitForAny();
_sync.InterceptedCount.Should().Be(3);
_sync.Intercepted.Select(i => i.Subject).Should().OnlyContain(i => i.StartsWith(subjectNs));
}
public async Task Given_subscribed_When_disconnectiong_and_connecting_again_It_should_resubscribe_and_get_messages()
{
var subject = Context.GenerateSubject();
_sync = Sync.MaxOne();
_client = await Context.ConnectClientAsync();
_client.Sub(subject, stream => stream.Subscribe(NatsObserver.Delegating <MsgOp>(msg => _sync.Release(msg))));
await Context.DelayAsync();
await _client.PubAsync(subject, "Test1");
_sync.WaitForAny();
_client.Disconnect();
await _client.ConnectAsync();
await _client.PubAsync(subject, "Test2");
_sync.WaitForAny();
_sync.InterceptedCount.Should().Be(2);
}
public async Task Given_subscribed_with_wildcard_async_using_observer_It_should_get_messages()
{
const string subjectNs = "foo.tests.";
var interceptedSubjects = new List <string>();
await _client.SubAsync(subjectNs + "*", stream => stream.Subscribe(NatsObserver.Delegating <MsgOp>(msg =>
{
interceptedSubjects.Add(msg.Subject);
ReleaseOne();
})));
await _client.PubAsync(subjectNs + "type1", "Test1");
WaitOne();
await _client.PubAsync(subjectNs + "type2", "Test2");
WaitOne();
await _client.PubAsync(subjectNs + "type3", "Test3");
WaitOne();
interceptedSubjects.Should().HaveCount(3);
interceptedSubjects.Should().OnlyContain(i => i.StartsWith(subjectNs));
}
public static IDisposable SubscribeSafe <T>(this INatsObservable <T> ob, IObserver <T> observer) where T : class => ob.Subscribe(NatsObserver.Safe <T>(observer.OnNext, observer.OnError, observer.OnCompleted));
public static IDisposable SubscribeSafe <T>(this INatsObservable <T> ob, Action <T> onNext, Action <Exception> onError = null, Action onCompleted = null) => ob.Subscribe(NatsObserver.Safe(onNext, onError, onCompleted));