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 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 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 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);
}