public async Task TransportRouting_FirstTrySucceed_Open()
{
var amqpTransportSettings = Substitute.For<ITransportSettings>();
var mqttTransportSettings = Substitute.For<ITransportSettings>();
var innerHandler = Substitute.For<IDelegatingHandler>();
innerHandler.OpenAsync(Arg.Is(false)).Returns(TaskConstants.Completed);
var sut = new RoutingDelegatingHandler((cs, ts) => innerHandler, null, new [] {amqpTransportSettings, mqttTransportSettings} );
await sut.OpenAsync(false);
await innerHandler.Received(1).OpenAsync(Arg.Is(false));
}
public async Task TransportRouting_TryOpenFailedWithSupportedExceptionTwoTimes_Fail()
{
var amqpTransportSettings = Substitute.For<ITransportSettings>();
var mqttTransportSettings = Substitute.For<ITransportSettings>();
var innerHandler = Substitute.For<IDelegatingHandler>();
innerHandler.CloseAsync().Returns(TaskConstants.Completed);
int openCallCounter = 0;
innerHandler.OpenAsync(Arg.Is(false)).Returns(async ci =>
{
openCallCounter++;
await Task.Yield();
throw new TimeoutException();
});
var sut = new RoutingDelegatingHandler((cs, ts) => innerHandler, null, new [] {amqpTransportSettings, mqttTransportSettings} );
await sut.OpenAsync(Arg.Is(false)).ExpectedAsync<IotHubCommunicationException>();
await innerHandler.Received(2).CloseAsync();
Assert.AreEqual(2, openCallCounter);
}
static async Task TransportRouting_TryOpenFailedWithSupportedExceptionFirstTimes_SuccessOnSecondTry(Func<Exception> exceptionFactory)
{
var amqpTransportSettings = Substitute.For<ITransportSettings>();
var mqttTransportSettings = Substitute.For<ITransportSettings>();
var innerHandler = Substitute.For<IDelegatingHandler>();
innerHandler.CloseAsync().Returns(TaskConstants.Completed);
int openCallCounter = 0;
innerHandler.OpenAsync(Arg.Is(false)).Returns(async ci =>
{
openCallCounter++;
await Task.Yield();
if (openCallCounter == 1)
{
throw exceptionFactory();
}
});
var sut = new RoutingDelegatingHandler((cs, ts) => innerHandler, null, new[] { amqpTransportSettings, mqttTransportSettings });
await sut.OpenAsync(Arg.Is(false));
await innerHandler.Received(1).CloseAsync();
Assert.AreEqual(2, openCallCounter);
}
