public void InitializesTransmitterWithNetworkAvailabilityPolicy()
{
var network = new StubNetwork { OnIsAvailable = () => false };
var channel = new ServerTelemetryChannel(network, new StubApplicationLifecycle());
channel.Initialize(new TelemetryConfiguration());
Thread.Sleep(50);
Assert.Equal(0, channel.Transmitter.Sender.Capacity);
}
public void DoesNotSetMaxSenderAndBufferCapacitiesToZeroWhenNetworkAvailabilityCheckFailsHopingThatTransmissionsThemselvesMaySucceed()
{
var network = new StubNetwork { OnIsAvailable = () => { throw new Exception("NetworkInformationException"); } };
var policy = new NetworkAvailabilityTransmissionPolicy(network);
policy.Initialize(new StubTransmitter());
Assert.Null(policy.MaxSenderCapacity);
Assert.Null(policy.MaxBufferCapacity);
}
public void SetsMaxSenderAndBufferCapacitiesToZeroWhenNetworkIsUnavailable()
{
var network = new StubNetwork { OnIsAvailable = () => false };
var policy = new NetworkAvailabilityTransmissionPolicy(network);
policy.Initialize(new StubTransmitter());
Assert.Equal(0, policy.MaxSenderCapacity);
Assert.Equal(0, policy.MaxBufferCapacity);
}
public void DoesNotSetMaxSenderAndBufferCapacitiesToZeroWhenNetworkIsAvailable()
{
var network = new StubNetwork { OnIsAvailable = () => true };
var policy = new NetworkAvailabilityTransmissionPolicy(network);
policy.Initialize(new StubTransmitter());
Assert.Null(policy.MaxSenderCapacity);
Assert.Null(policy.MaxBufferCapacity);
}
public void DisposeUnsubscribesNetworkChangeEvents()
{
bool unsubscribeCalled = false;
var network = new StubNetwork { OnRemoveAddressChangedEventHandler = (h) => { unsubscribeCalled = true; } };
var policy = new NetworkAvailabilityTransmissionPolicy(network);
policy.Dispose();
Assert.True(unsubscribeCalled);
}
public void ConstructorDoesNotSubscribeToNetworkChangeEventsToPreventExceptionsBeforePolicyIsInitialized()
{
var network = new StubNetwork { OnIsAvailable = () => false };
var policy = new NetworkAvailabilityTransmissionPolicy(network);
network.OnStatusChanged(EventArgs.Empty);
Assert.Null(policy.MaxSenderCapacity);
Assert.Null(policy.MaxBufferCapacity);
}
public void HandlesExceptionsThrownByNetworkWhenAddingAddressChangedEventHandler()
{
using (var listener = new TestEventListener())
{
const long AllKeywords = -1;
listener.EnableEvents(TelemetryChannelEventSource.Log, EventLevel.Warning, (EventKeywords)AllKeywords);
var exception = new SocketException();
var network = new StubNetwork { OnAddAddressChangedEventHandler = handler => { throw exception; } };
var policy = new NetworkAvailabilityTransmissionPolicy(network);
policy.Initialize(new StubTransmitter());
EventWrittenEventArgs error = listener.Messages.First(arg => arg.EventId == 38);
Assert.Contains(exception.Message, (string)error.Payload[0], StringComparison.CurrentCulture);
}
}
public void HandlesExceptionsThrownByNetworkIsAvailable()
{
using (var listener = new TestEventListener())
{
const long AllKeywords = -1;
listener.EnableEvents(TelemetryChannelEventSource.Log, EventLevel.Warning, (EventKeywords)AllKeywords);
var exception = new Exception("Socket Error");
var network = new StubNetwork { OnIsAvailable = () => { throw exception; } };
var policy = new NetworkAvailabilityTransmissionPolicy(network);
policy.Initialize(new StubTransmitter());
network.OnStatusChanged(EventArgs.Empty);
EventWrittenEventArgs error = listener.Messages.First();
Assert.Contains(exception.Message, (string)error.Payload[0], StringComparison.Ordinal);
}
}
public void AsksTransmitterToApplyPoliciesWhenNetworkAvailabilityChanges()
{
bool policiesApplied = false;
var transmitter = new StubTransmitter();
transmitter.OnApplyPolicies = () =>
{
policiesApplied = true;
};
var network = new StubNetwork();
var policy = new NetworkAvailabilityTransmissionPolicy(network);
policy.Initialize(transmitter);
network.OnStatusChanged(EventArgs.Empty);
Assert.True(policiesApplied);
}
public void ResetsMaxSenderAndBufferCapacitiesToNullWhenNetworkBecomesAvailable()
{
bool isNetworkAvailable = false;
var network = new StubNetwork { OnIsAvailable = () => isNetworkAvailable };
var policy = new NetworkAvailabilityTransmissionPolicy(network);
policy.Initialize(new StubTransmitter());
isNetworkAvailable = true;
network.OnStatusChanged(EventArgs.Empty);
Assert.Null(policy.MaxSenderCapacity);
Assert.Null(policy.MaxBufferCapacity);
}
